From cae64232af74fc1490979f00abd5b782b466c7be Mon Sep 17 00:00:00 2001
From: Geoffrey Booth <webmaster@geoffreybooth.com>
Date: Fri, 1 Sep 2017 21:25:47 -0700
Subject: [PATCH 1/5] Upgrade docs to Bootstrap 4 beta, including refactoring
 styles; upgrade docs jQuery and CodeMirror

---
 documentation/examples/chaining.coffee |   2 +-
 documentation/sections/overview.md     |   2 +-
 documentation/v2/body.html             |   4 +-
 documentation/v2/code.html             |   2 +-
 documentation/v2/docs.coffee           |  21 +-
 documentation/v2/docs.css              | 138 +++++--------
 documentation/v2/navbar.html           |  26 ++-
 documentation/v2/scripts.html          |   8 +-
 documentation/v2/sidebar.html          | 274 +++++++------------------
 documentation/v2/styles.html           |   2 +-
 documentation/v2/try.html              |   2 +-
 11 files changed, 157 insertions(+), 324 deletions(-)

diff --git a/documentation/examples/chaining.coffee b/documentation/examples/chaining.coffee
index 25c7eb2e79..463830e116 100644
--- a/documentation/examples/chaining.coffee
+++ b/documentation/examples/chaining.coffee
@@ -2,5 +2,5 @@ $ 'body'
 .click (e) ->
   $ '.box'
   .fadeIn 'fast'
-  .addClass '.active'
+  .addClass 'show'
 .css 'background', 'white'
diff --git a/documentation/sections/overview.md b/documentation/sections/overview.md
index a40f52fa11..8d7119905b 100644
--- a/documentation/sections/overview.md
+++ b/documentation/sections/overview.md
@@ -1,6 +1,6 @@
 ## Overview
 
-_CoffeeScript on the <span class="hidden-md-up">top</span><span class="hidden-sm-down">left</span>, compiled JavaScript output on the <span class="hidden-md-up">bottom</span><span class="hidden-sm-down">right</span>. The CoffeeScript is editable!_
+_CoffeeScript on the <span class="d-md-none">top</span><span class="d-none d-md-inline">left</span>, compiled JavaScript output on the <span class="d-md-none">bottom</span><span class="d-none d-md-inline">right</span>. The CoffeeScript is editable!_
 
 ```
 codeFor('overview', 'cubes', false)
diff --git a/documentation/v2/body.html b/documentation/v2/body.html
index a4f23742a6..570261a7eb 100644
--- a/documentation/v2/body.html
+++ b/documentation/v2/body.html
@@ -7,9 +7,9 @@
     <nav class="sidebar sidebar-offcanvas col-xs-12 col-lg-3 bg-ribbed-light">
       <%= include('sidebar.html') %>
     </nav>
-    <main class="main col-xs-12 col-lg-9 offset-lg-3">
+    <main class="main col-lg-9 ml-auto">
 
-      <header class="title-logo hidden-md-down">
+      <header class="title-logo d-none d-lg-block">
         <%= include('documentation/images/logo.svg') %>
       </header>
 
diff --git a/documentation/v2/code.html b/documentation/v2/code.html
index 3c94f7be38..fe2d2f00bf 100644
--- a/documentation/v2/code.html
+++ b/documentation/v2/code.html
@@ -9,7 +9,7 @@
   </div>
   <% if (run) { %>
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="<%= file %>" data-run="<%= escape(run) %>"><% if (run === true) { %>▶<% } else { %><small>▶</small>&ensp;<%= run.replace(/"/g, '&quot;') %><% } %></button>
     </div>
   </div>
diff --git a/documentation/v2/docs.coffee b/documentation/v2/docs.coffee
index 07b2cc752a..62406f1ab9 100644
--- a/documentation/v2/docs.coffee
+++ b/documentation/v2/docs.coffee
@@ -1,12 +1,12 @@
 $(document).ready ->
   # Mobile navigation
   toggleSidebar = ->
-    $('.menu-button, .row-offcanvas').toggleClass 'active'
+    $('.navbar-toggler, .row-offcanvas').toggleClass 'show'
 
   $('[data-toggle="offcanvas"]').click toggleSidebar
 
   $('[data-action="sidebar-nav"]').click (event) ->
-    if $('.menu-button').is(':visible')
+    if $('.navbar-toggler').is(':visible')
       event.preventDefault()
       toggleSidebar()
       setTimeout ->
@@ -20,12 +20,12 @@ $(document).ready ->
     offset: Math.round $('main').css('padding-top').replace('px', '')
 
   initializeScrollspyFromHash = (hash) ->
-    $(".nav-link.active[href!='#{hash}']").removeClass 'active'
+    $("#contents a.active[href!='#{hash}']").removeClass 'show'
 
   $(window).on 'activate.bs.scrollspy', (event, target) -> # Why `window`? https://github.com/twbs/bootstrap/issues/20086
     # We only want one active link in the nav
-    $(".nav-link.active[href!='#{target.relatedTarget}']").removeClass 'active'
-    $target = $(".nav-link[href='#{target.relatedTarget}']")
+    $("#contents a.active[href!='#{target.relatedTarget}']").removeClass 'show'
+    $target = $("#contents a[href='#{target.relatedTarget}']")
     # Update the browser address bar on scroll or navigation
     window.history.pushState {}, $target.text(), $target.prop('href')
 
@@ -58,7 +58,7 @@ $(document).ready ->
           lastCompilationStartTime = Date.now()
           try
             coffee = editor.getValue()
-            if index is 0 and $('#try').hasClass('active') # If this is the editor in Try CoffeeScript and it’s still visible
+            if index is 0 and $('#try').hasClass('show') # If this is the editor in Try CoffeeScript and it’s still visible
               # Update the hash with the current code
               link = "try:#{encodeURIComponent coffee}"
               window.history.pushState {}, 'CoffeeScript', "#{location.href.split('#')[0]}##{link}"
@@ -107,9 +107,9 @@ $(document).ready ->
         if coffee?
           editors[0].setValue coffee
       catch exception
-    $('#try, #try-link').toggleClass 'active'
+    $('#try, #try-link').toggleClass 'show'
   closeTry = ->
-    $('#try, #try-link').removeClass 'active'
+    $('#try, #try-link').removeClass 'show'
 
   $('[data-toggle="try"]').click toggleTry
   $('[data-close="try"]').click closeTry
@@ -124,5 +124,6 @@ $(document).ready ->
       toggleTry()
     else
       initializeScrollspyFromHash window.location.hash
-      # Initializing the code editors might’ve thrown off our vertical scroll position
-      document.getElementById(window.location.hash.slice(1).replace(/try:.*/, '')).scrollIntoView()
+      if window.location.hash.length > 1
+        # Initializing the code editors might’ve thrown off our vertical scroll position
+        document.getElementById(window.location.hash.slice(1).replace(/try:.*/, '')).scrollIntoView()
diff --git a/documentation/v2/docs.css b/documentation/v2/docs.css
index 908a4a2cb7..83f67685a3 100644
--- a/documentation/v2/docs.css
+++ b/documentation/v2/docs.css
@@ -27,7 +27,12 @@ a:focus, a:hover, a:active {
   text-decoration: none;
 }
 
-.bg-inverse {
+button:focus, .navbar-dark .navbar-toggler:focus {
+  outline: none;
+  border: thin solid rgba(248, 243, 240, 0.3);
+}
+
+.bg-dark {
   background-color: #3e2723 !important;
 }
 
@@ -44,92 +49,35 @@ a:focus, a:hover, a:active {
 /*
  * Header
  */
-.navbar-fixed-top {
+.site-navbar {
   height: 3.5rem;
+  font-family: Lato;
+  font-weight: 400;
+  font-size: 1.1em;
 }
 
 .navbar-brand {
-  height: 2em;
-  margin-right: 2em;
+  height: 2.2em;
+  margin-right: 1em;
 }
 
 .navbar-dark path {
   fill: #fff;
 }
 
-.navbar-nav {
-  font-family: Lato;
-  font-weight: 400;
-  font-size: 1.1em;
-}
-
-.navbar-nav .nav-link {
-  padding-left: 0.6em;
-  padding-right: 0.6em;
+.navbar-nav .nav-item {
+  margin-left: 0.6em;
+  margin-right: 0.6em;
   border-radius: 0.4em;
 }
-.navbar-nav .nav-link:hover,
-.navbar-nav .nav-link:active,
-.navbar-nav .nav-link.active {
+.navbar-nav .nav-item:hover,
+.navbar-nav .nav-item:active,
+.navbar-nav .nav-item.show {
   background-color: #4e342e;
 }
 
-/* Adapted from https://codepen.io/GeoffreyBooth/pen/QGzwYK */
-.navbar-menu-button,
-.navbar-menu-button:focus {
-  float: right;
-  width: 2.3em;
-  padding: 0;
-  margin-top: 0.25em;
-  background: transparent;
-  border: 0;
-  outline: 0;
-}
-.menu-button {
-  width: 2em;
-  height: 1.5em;
-  position: relative;
-  transform: rotate(0deg);
-  transition: .25s ease-in-out;
-  cursor: pointer;
-}
-.menu-button span {
-  display: block;
-  position: absolute;
-  height: 4px;
-  width: 100%;
-  background: #efebe9;
-  border-radius: 4px;
-  opacity: 1;
-  left: 0;
-  transform: rotate(0deg);
-  transition: .25s ease-in-out;
-}
-.menu-button span:nth-child(1) {
-  top: 0;
-}
-.menu-button span:nth-child(2),
-.menu-button span:nth-child(3) {
-  top: 0.7em;
-}
-.menu-button span:nth-child(4) {
-  top: 1.4em;
-}
-.menu-button.active span:nth-child(1) {
-  top: 0.7em;
-  width: 0%;
-  left: 50%;
-}
-.menu-button.active span:nth-child(2) {
-  transform: rotate(45deg);
-}
-.menu-button.active span:nth-child(3) {
-  transform: rotate(-45deg);
-}
-.menu-button.active span:nth-child(4) {
-  top: 0.7em;
-  width: 0%;
-  left: 50%;
+.navbar-toggler {
+  transition: all 0.1s ease-in-out;
 }
 
 
@@ -152,40 +100,44 @@ a:focus, a:hover, a:active {
   /* Scrollable contents if viewport is shorter than content */
   overflow-y: auto;
   overflow-x: hidden;
+  padding: 0.5em 0 0.5em 0.3em;
   font-family: 'Alegreya Sans';
   font-weight: 400;
   font-size: 1.2em;
-  line-height: 2;
+  align-items: normal;
+}
+.sidebar .contents::-webkit-scrollbar {
+  display: none;
 }
 @media screen and (max-width: 991px) {
   .sidebar .contents {
     position: fixed;
     height: calc(100% - 3.5rem);
-    padding: 1em 1.6em;
   }
 }
 @media screen and (min-width: 992px) {
   .sidebar {
     position: fixed;
   }
-  .sidebar .contents {
-    padding: 1.3em;
-  }
-  .sidebar .contents::-webkit-scrollbar {
-    display: none;
-  }
 }
 
-.sidebar .nav-link.active,
-.sidebar .nav-link.active a:hover,
-.sidebar .nav-link.active a:focus {
-  font-weight: 800;
+.contents-column {
+  display: block;
 }
 
-.nav .nav {
+.contents .nav .nav {
   margin-left: 1em;
   font-size: 0.9em;
-  line-height: 1.7;
+}
+
+.contents .nav-link {
+  padding: 0.2em 0.7em;
+}
+
+.contents .nav-link.active,
+.contents .nav-link.active a:hover,
+.contents .nav-link.active a:focus {
+  font-weight: 800;
 }
 
 
@@ -209,7 +161,7 @@ a:focus, a:hover, a:active {
   .row-offcanvas-left .sidebar-offcanvas {
     left: -100%;
   }
-  .row-offcanvas-left.active {
+  .row-offcanvas-left.show {
     left: calc(100% + 30px)
   }
 }
@@ -218,7 +170,7 @@ a:focus, a:hover, a:active {
     left: calc(-66.667% - 15px);
     width: 66.667%;
   }
-  .row-offcanvas-left.active {
+  .row-offcanvas-left.show {
     left: calc(66.667% + 30px);
   }
   .row-offcanvas-left .sidebar-offcanvas .contents {
@@ -308,8 +260,11 @@ code, button {
   font-family: 'Roboto Mono';
   font-weight: 400;
 }
-code {
+code, a > code {
   background-color: #f8f3f0;
+  padding: 0.2rem 0.4rem;
+}
+code {
   color: #2f2625;
 }
 
@@ -356,6 +311,9 @@ textarea {
   font-weight: 400;
   line-height: 1.25;
 }
+.CodeMirror-code:focus {
+  outline: none;
+}
 .javascript-output-column .CodeMirror-cursor {
   /* https://github.com/codemirror/CodeMirror/issues/2568 */
   display: none;
@@ -373,7 +331,7 @@ textarea {
   opacity: 0;
   transition: opacity 0.15s ease-in-out;
 }
-.try-coffeescript.active {
+.try-coffeescript.show {
   opacity: 1;
   z-index: 1001;
 }
diff --git a/documentation/v2/navbar.html b/documentation/v2/navbar.html
index 23510d681e..8c5037e01f 100644
--- a/documentation/v2/navbar.html
+++ b/documentation/v2/navbar.html
@@ -1,17 +1,15 @@
-<nav class="navbar navbar-dark navbar-fixed-top bg-inverse bg-ribbed-dark">
+<nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-dark bg-ribbed-dark site-navbar">
   <a class="navbar-brand" href="#" data-close="try"><%= include('documentation/images/logo.svg') %></a>
-  <nav class="nav navbar-nav float-xs-left hidden-md-down">
-    <a href="#try" id="try-link" class="nav-item nav-link" data-toggle="try">Try CoffeeScript</a>
-    <a href="#language" class="nav-item nav-link" data-close="try">Language Reference</a>
-    <a href="#resources" class="nav-item nav-link" data-close="try">Resources</a>
-    <a href="http://github.com/jashkenas/coffeescript/" class="nav-item nav-link" data-close="try">GitHub</a>
-  </nav>
-  <button type="button" class="navbar-menu-button hidden-lg-up" data-toggle="offcanvas" aria-label="Toggle sidebar">
-    <div class="menu-button">
-      <span></span>
-      <span></span>
-      <span></span>
-      <span></span>
-    </div>
+  <button class="navbar-toggler" type="button" data-toggle="offcanvas" data-close="try" aria-label="Toggle sidebar">
+    <span class="navbar-toggler-icon"></span>
   </button>
+
+  <nav class="collapse navbar-collapse">
+    <ul class="navbar-nav mr-auto d-none d-lg-flex">
+      <a href="#try" id="try-link" class="nav-item nav-link" data-toggle="try">Try CoffeeScript</a>
+      <a href="#language" class="nav-item nav-link" data-close="try">Language Reference</a>
+      <a href="#resources" class="nav-item nav-link" data-close="try">Resources</a>
+      <a href="http://github.com/jashkenas/coffeescript/" class="nav-item nav-link" data-close="try">GitHub
+        </a>
+  </nav>
 </nav>
diff --git a/documentation/v2/scripts.html b/documentation/v2/scripts.html
index f37c24c246..962fb8a3c2 100644
--- a/documentation/v2/scripts.html
+++ b/documentation/v2/scripts.html
@@ -1,9 +1,9 @@
-<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js" integrity="sha384-3ceskX3iaEnIogmQchP8opvBy3Mi7Ce34nWjpBIwVTHfGYWQS9jwHDVRnpKKHJg7" crossorigin="anonymous"></script>
+<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js" integrity="sha384-xBuQ/xzmlsLoJpyjoggmTEz8OWUFM0/RC5BsqQBDX2v5cMvDHcMakNTNrHIW2I5f" crossorigin="anonymous"></script>
 <script>
-  window.Tether = {}; // Remove if we want to use Bootstrap tooltips
+  window.Popper = {}; // Remove if we want to use Bootstrap tooltips
 </script>
-<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.5/js/bootstrap.min.js" integrity="sha384-BLiI7JTZm+JWlgKa0M0kGRpJbF2J8q+qreVrKBC47e3K6BW78kGLrCkeRX6I9RoK" crossorigin="anonymous"></script>
-<script src="https://cdn.jsdelivr.net/g/codemirror@4.5.0(codemirror.min.js+mode/coffeescript/coffeescript.js+addon/lint/coffeescript-lint.js+mode/javascript/javascript.js)" crossorigin="anonymous"></script>
+<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/combine/npm/codemirror@5.29.0/lib/codemirror.js,npm/codemirror@5.29.0/mode/coffeescript/coffeescript.js,npm/codemirror@5.29.0/addon/lint/coffeescript-lint.js,npm/codemirror@5.29.0/mode/javascript/javascript.js"></script>
 
 <script src="browser-compiler/coffeescript.js"></script>
 <script type="text/coffeescript">
diff --git a/documentation/v2/sidebar.html b/documentation/v2/sidebar.html
index 2c4d33ff0b..ed3a1bc6e6 100644
--- a/documentation/v2/sidebar.html
+++ b/documentation/v2/sidebar.html
@@ -1,200 +1,76 @@
-<nav class="contents" id="contents">
-  <ul class="nav">
-    <li class="nav-item">
-      <a href="#top" class="nav-link" data-action="sidebar-nav">Overview</a>
-    </li>
-    <li class="nav-item">
-      <a href="#coffeescript-2" class="nav-link" data-action="sidebar-nav">CoffeeScript 2</a>
-    </li>
-    <li class="nav-item">
-      <a href="#installation" class="nav-link" data-action="sidebar-nav">Installation</a>
-    </li>
-    <li class="nav-item">
-      <a href="#usage" class="nav-link" data-action="sidebar-nav">Usage</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#cli" class="nav-link" data-action="sidebar-nav">Command Line</a>
-        </li>
-        <li class="nav-item">
-          <a href="#es2015plus-output" class="nav-link" data-action="sidebar-nav">ES2015+ Output</a>
-        </li>
-        <li class="nav-item">
-          <a href="#nodejs-usage" class="nav-link" data-action="sidebar-nav">Node.js</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#language" class="nav-link" data-action="sidebar-nav">Language Reference</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#functions" class="nav-link" data-action="sidebar-nav">Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#strings" class="nav-link" data-action="sidebar-nav">Strings</a>
-        </li>
-        <li class="nav-item">
-          <a href="#objects-and-arrays" class="nav-link" data-action="sidebar-nav">Objects and Arrays</a>
-        </li>
-        <li class="nav-item">
-          <a href="#comments" class="nav-link" data-action="sidebar-nav">Comments</a>
-        </li>
-        <li class="nav-item">
-          <a href="#lexical-scope" class="nav-link" data-action="sidebar-nav">Lexical Scoping and Variable Safety</a>
-        </li>
-        <li class="nav-item">
-          <a href="#conditionals" class="nav-link" data-action="sidebar-nav">If, Else, Unless, and Conditional Assignment</a>
-        </li>
-        <li class="nav-item">
-          <a href="#splats" class="nav-link" data-action="sidebar-nav">Splats, or Rest Parameters/Spread Syntax</a>
-        </li>
-        <li class="nav-item">
-          <a href="#loops" class="nav-link" data-action="sidebar-nav">Loops and Comprehensions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#slices" class="nav-link" data-action="sidebar-nav">Array Slicing and Splicing</a>
-        </li>
-        <li class="nav-item">
-          <a href="#expressions" class="nav-link" data-action="sidebar-nav">Everything is an Expression</a>
-        </li>
-        <li class="nav-item">
-          <a href="#operators" class="nav-link" data-action="sidebar-nav">Operators and Aliases</a>
-        </li>
-        <li class="nav-item">
-          <a href="#existential-operator" class="nav-link" data-action="sidebar-nav">Existential Operator</a>
-        </li>
-        <li class="nav-item">
-          <a href="#destructuring" class="nav-link" data-action="sidebar-nav">Destructuring Assignment</a>
-        </li>
-        <li class="nav-item">
-          <a href="#chaining" class="nav-link" data-action="sidebar-nav">Chaining Function Calls</a>
-        </li>
-        <li class="nav-item">
-          <a href="#fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#generators" class="nav-link" data-action="sidebar-nav">Generator Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#async-functions" class="nav-link" data-action="sidebar-nav">Async Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#classes" class="nav-link" data-action="sidebar-nav">Classes</a>
-        </li>
-        <li class="nav-item">
-          <a href="#prototypal-inheritance" class="nav-link" data-action="sidebar-nav">Prototypal Inheritance</a>
-        </li>
-        <li class="nav-item">
-          <a href="#switch" class="nav-link" data-action="sidebar-nav">Switch and Try/Catch</a>
-        </li>
-        <li class="nav-item">
-          <a href="#comparisons" class="nav-link" data-action="sidebar-nav">Chained Comparisons</a>
-        </li>
-        <li class="nav-item">
-          <a href="#regexes" class="nav-link" data-action="sidebar-nav">Block Regular Expressions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#tagged-template-literals" class="nav-link" data-action="sidebar-nav">Tagged Template Literals</a>
-        </li>
-        <li class="nav-item">
-          <a href="#modules" class="nav-link" data-action="sidebar-nav">Modules</a>
-        </li>
-        <li class="nav-item">
-          <a href="#embedded" class="nav-link" data-action="sidebar-nav">Embedded JavaScript</a>
-        </li>
-        <li class="nav-item">
-          <a href="#jsx" class="nav-link" data-action="sidebar-nav">JSX</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#type-annotations" class="nav-link" data-action="sidebar-nav">Type Annotations</a>
-    </li>
-    <li class="nav-item">
-      <a href="#literate" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript</a>
-    </li>
-    <li class="nav-item">
-      <a href="#source-maps" class="nav-link" data-action="sidebar-nav">Source Maps</a>
-    </li>
-    <li class="nav-item">
-      <a href="#cake" class="nav-link" data-action="sidebar-nav">Cake, and Cakefiles</a>
-    </li>
-    <li class="nav-item">
-      <a href="#scripts" class="nav-link" data-action="sidebar-nav"><code>"text/coffeescript"</code> Script Tags</a>
-    </li>
-    <li class="nav-item">
-      <a href="test.html" class="nav-link" data-action="sidebar-nav">Browser-Based Tests</a>
-    </li>
-    <li class="nav-item">
-      <a href="#resources" class="nav-link" data-action="sidebar-nav">Resources</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#books" class="nav-link" data-action="sidebar-nav">Books</a>
-        </li>
-        <li class="nav-item">
-          <a href="#screencasts" class="nav-link" data-action="sidebar-nav">Screencasts</a>
-        </li>
-        <li class="nav-item">
-          <a href="#examples" class="nav-link" data-action="sidebar-nav">Examples</a>
-        </li>
-        <li class="nav-item">
-          <a href="#chat" class="nav-link" data-action="sidebar-nav">Chat</a>
-        </li>
-        <li class="nav-item">
-          <a href="#annotated-source" class="nav-link" data-action="sidebar-nav">Annotated Source</a>
-        </li>
-        <li class="nav-item">
-          <a href="#contributing" class="nav-link" data-action="sidebar-nav">Contributing</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#unsupported" class="nav-link" data-action="sidebar-nav">Unsupported ECMAScript Features</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#unsupported-let-const" class="nav-link" data-action="sidebar-nav"><code>let</code> and <code>const</code></a>
-        </li>
-        <li class="nav-item">
-          <a href="#unsupported-named-functions" class="nav-link" data-action="sidebar-nav">Named Functions and Function Declarations</a>
-        </li>
-        <li class="nav-item">
-          <a href="#unsupported-get-set" class="nav-link" data-action="sidebar-nav"><code>get</code> and <code>set</code> Shorthand Syntax</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#breaking-changes" class="nav-link" data-action="sidebar-nav">Breaking Changes From 1.x</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#breaking-change-fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-default-values" class="nav-link" data-action="sidebar-nav">Default Values</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-bound-generator-functions" class="nav-link" data-action="sidebar-nav">Bound Generator Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-classes" class="nav-link" data-action="sidebar-nav">Classes</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-super-extends" class="nav-link" data-action="sidebar-nav"><code>super</code> and <code>extends</code></a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-jsx-and-the-less-than-and-greater-than-operators" class="nav-link" data-action="sidebar-nav">JSX and the <code>&lt;</code> and <code>&gt;</code> Operators</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-literate-coffeescript" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript Parsing</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-argument-parsing-and-shebang-lines" class="nav-link" data-action="sidebar-nav">Argument Parsing and <code>#!</code> Lines</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#changelog" class="nav-link" data-action="sidebar-nav">Changelog</a>
-    </li>
-    <li class="nav-item">
-      <a href="/v1/" class="nav-link" data-action="sidebar-nav">Version 1.x Documentation</a>
-    </li>
-  </ul>
+<nav id="contents" class="navbar contents">
+  <nav class="nav flex-column contents-column">
+    <a href="#top" class="nav-link" data-action="sidebar-nav">Overview</a>
+    <a href="#coffeescript-2" class="nav-link" data-action="sidebar-nav">CoffeeScript 2</a>
+    <a href="#installation" class="nav-link" data-action="sidebar-nav">Installation</a>
+    <a href="#usage" class="nav-link" data-action="sidebar-nav">Usage</a>
+    <nav class="nav flex-column">
+      <a href="#cli" class="nav-link" data-action="sidebar-nav">Command Line</a>
+      <a href="#es2015plus-output" class="nav-link" data-action="sidebar-nav">ES2015+ Output</a>
+      <a href="#nodejs-usage" class="nav-link" data-action="sidebar-nav">Node.js</a>
+    </nav>
+    <a href="#language" class="nav-link" data-action="sidebar-nav">Language Reference</a>
+      <nav class="nav flex-column">
+        <a href="#functions" class="nav-link" data-action="sidebar-nav">Functions</a>
+        <a href="#strings" class="nav-link" data-action="sidebar-nav">Strings</a>
+        <a href="#objects-and-arrays" class="nav-link" data-action="sidebar-nav">Objects and Arrays</a>
+        <a href="#comments" class="nav-link" data-action="sidebar-nav">Comments</a>
+        <a href="#lexical-scope" class="nav-link" data-action="sidebar-nav">Lexical Scoping and Variable Safety</a>
+        <a href="#conditionals" class="nav-link" data-action="sidebar-nav">If, Else, Unless, and Conditional Assignment</a>
+        <a href="#splats" class="nav-link" data-action="sidebar-nav">Splats, or Rest Parameters/Spread Syntax</a>
+        <a href="#loops" class="nav-link" data-action="sidebar-nav">Loops and Comprehensions</a>
+        <a href="#slices" class="nav-link" data-action="sidebar-nav">Array Slicing and Splicing</a>
+        <a href="#expressions" class="nav-link" data-action="sidebar-nav">Everything is an Expression</a>
+        <a href="#operators" class="nav-link" data-action="sidebar-nav">Operators and Aliases</a>
+        <a href="#existential-operator" class="nav-link" data-action="sidebar-nav">Existential Operator</a>
+        <a href="#destructuring" class="nav-link" data-action="sidebar-nav">Destructuring Assignment</a>
+        <a href="#chaining" class="nav-link" data-action="sidebar-nav">Chaining Function Calls</a>
+        <a href="#fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
+        <a href="#generators" class="nav-link" data-action="sidebar-nav">Generator Functions</a>
+        <a href="#async-functions" class="nav-link" data-action="sidebar-nav">Async Functions</a>
+        <a href="#classes" class="nav-link" data-action="sidebar-nav">Classes</a>
+        <a href="#prototypal-inheritance" class="nav-link" data-action="sidebar-nav">Prototypal Inheritance</a>
+        <a href="#switch" class="nav-link" data-action="sidebar-nav">Switch and Try/Catch</a>
+        <a href="#comparisons" class="nav-link" data-action="sidebar-nav">Chained Comparisons</a>
+        <a href="#regexes" class="nav-link" data-action="sidebar-nav">Block Regular Expressions</a>
+        <a href="#tagged-template-literals" class="nav-link" data-action="sidebar-nav">Tagged Template Literals</a>
+        <a href="#modules" class="nav-link" data-action="sidebar-nav">Modules</a>
+        <a href="#embedded" class="nav-link" data-action="sidebar-nav">Embedded JavaScript</a>
+        <a href="#jsx" class="nav-link" data-action="sidebar-nav">JSX</a>
+      </nav>
+    <a href="#type-annotations" class="nav-link" data-action="sidebar-nav">Type Annotations</a>
+    <a href="#literate" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript</a>
+    <a href="#source-maps" class="nav-link" data-action="sidebar-nav">Source Maps</a>
+    <a href="#cake" class="nav-link" data-action="sidebar-nav">Cake, and Cakefiles</a>
+    <a href="#scripts" class="nav-link" data-action="sidebar-nav"><code>"text/coffeescript"</code> Script Tags</a>
+    <a href="test.html" class="nav-link" data-action="sidebar-nav">Browser-Based Tests</a>
+    <a href="#resources" class="nav-link" data-action="sidebar-nav">Resources</a>
+      <nav class="nav flex-column">
+        <a href="#books" class="nav-link" data-action="sidebar-nav">Books</a>
+        <a href="#screencasts" class="nav-link" data-action="sidebar-nav">Screencasts</a>
+        <a href="#examples" class="nav-link" data-action="sidebar-nav">Examples</a>
+        <a href="#chat" class="nav-link" data-action="sidebar-nav">Chat</a>
+        <a href="#annotated-source" class="nav-link" data-action="sidebar-nav">Annotated Source</a>
+        <a href="#contributing" class="nav-link" data-action="sidebar-nav">Contributing</a>
+      </nav>
+    <a href="#unsupported" class="nav-link" data-action="sidebar-nav">Unsupported ECMAScript Features</a>
+      <nav class="nav flex-column">
+        <a href="#unsupported-let-const" class="nav-link" data-action="sidebar-nav"><code>let</code> and <code>const</code></a>
+        <a href="#unsupported-named-functions" class="nav-link" data-action="sidebar-nav">Named Functions and Function Declarations</a>
+        <a href="#unsupported-get-set" class="nav-link" data-action="sidebar-nav"><code>get</code> and <code>set</code> Shorthand Syntax</a>
+      </nav>
+    <a href="#breaking-changes" class="nav-link" data-action="sidebar-nav">Breaking Changes From 1.x</a>
+      <nav class="nav flex-column">
+        <a href="#breaking-change-fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
+        <a href="#breaking-changes-default-values" class="nav-link" data-action="sidebar-nav">Default Values</a>
+        <a href="#breaking-changes-bound-generator-functions" class="nav-link" data-action="sidebar-nav">Bound Generator Functions</a>
+        <a href="#breaking-changes-classes" class="nav-link" data-action="sidebar-nav">Classes</a>
+        <a href="#breaking-changes-super-extends" class="nav-link" data-action="sidebar-nav"><code>super</code> and <code>extends</code></a>
+        <a href="#breaking-changes-jsx-and-the-less-than-and-greater-than-operators" class="nav-link" data-action="sidebar-nav">JSX and the <code>&lt;</code> and <code>&gt;</code> Operators</a>
+        <a href="#breaking-changes-literate-coffeescript" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript Parsing</a>
+        <a href="#breaking-changes-argument-parsing-and-shebang-lines" class="nav-link" data-action="sidebar-nav">Argument Parsing and <code>#!</code> Lines</a>
+      </nav>
+    <a href="#changelog" class="nav-link" data-action="sidebar-nav">Changelog</a>
+    <a href="/v1/" class="nav-link" data-action="sidebar-nav">Version 1.x Documentation</a>
+  </nav>
 </nav>
diff --git a/documentation/v2/styles.html b/documentation/v2/styles.html
index 3c719ee2d0..4874fd4b01 100644
--- a/documentation/v2/styles.html
+++ b/documentation/v2/styles.html
@@ -1,4 +1,4 @@
-<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.5/css/bootstrap.min.css" integrity="sha384-AysaV+vQoT3kOAXZkl02PThvDr8HYKPZhNT5h/CXfBThSRXQ6jW5DO2ekP5ViFdi" crossorigin="anonymous">
+<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
 <!-- The CoffeeScript logo font is Google’s Galada -->
 <link href="https://fonts.googleapis.com/css?family=Alegreya+Sans:400,800|Lato:300,300i,400,700|Roboto+Mono:400,400i" rel="stylesheet" crossorigin="anonymous">
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/codemirror/4.5.0/codemirror.css" crossorigin="anonymous">
diff --git a/documentation/v2/try.html b/documentation/v2/try.html
index 60ab3c2009..aaa33d560b 100644
--- a/documentation/v2/try.html
+++ b/documentation/v2/try.html
@@ -8,7 +8,7 @@
     </div>
   </div>
   <div class="row">
-    <div class="col-xs-12 text-xs-right try-buttons">
+    <div class="col text-right try-buttons">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="try-coffeescript" data-run="true">▶</button>&emsp;
     </div>
   </div>

From 4136311d4ae6bf9772feb5dc85f46e10c863c302 Mon Sep 17 00:00:00 2001
From: Geoffrey Booth <webmaster@geoffreybooth.com>
Date: Fri, 1 Sep 2017 21:48:22 -0700
Subject: [PATCH 2/5] Better style the docs for mobile, including Try
 CoffeeScript

---
 documentation/v2/docs.css     | 24 ++++++++++++++++++++----
 documentation/v2/sidebar.html |  2 ++
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/documentation/v2/docs.css b/documentation/v2/docs.css
index 83f67685a3..92e6a5b755 100644
--- a/documentation/v2/docs.css
+++ b/documentation/v2/docs.css
@@ -203,8 +203,19 @@ button:focus, .navbar-dark .navbar-toggler:focus {
 
 .main p, .main li, .main td, .main th {
   font-family: Lato;
-  font-size: 1.3rem;
   font-weight: 300;
+  font-size: 1.1em;
+}
+.main blockquote {
+  font-size: 1.1em;
+}
+@media (min-width: 768px) {
+  .main p, .main li, .main td, .main th {
+    font-size: 1.3em;
+  }
+  .main blockquote {
+    font-size: 1.3em;
+  }
 }
 .main td {
   vertical-align: top;
@@ -220,9 +231,6 @@ button:focus, .navbar-dark .navbar-toggler:focus {
 .main a:focus, .main a:hover, .main a:active {
   border-bottom: 2px solid rgba(56, 142, 60, 0.2);
 }
-.main blockquote {
-  font-size: 1.3rem;
-}
 .main blockquote pre {
   background-color: #f8f3f0;
   color: #2f2625;
@@ -310,10 +318,18 @@ textarea {
   font-family: 'Roboto Mono';
   font-weight: 400;
   line-height: 1.25;
+  font-size: 0.9em;
 }
+@media (min-width: 768px) {
+  .CodeMirror {
+    font-size: 1em;
+  }
+}
+
 .CodeMirror-code:focus {
   outline: none;
 }
+
 .javascript-output-column .CodeMirror-cursor {
   /* https://github.com/codemirror/CodeMirror/issues/2568 */
   display: none;
diff --git a/documentation/v2/sidebar.html b/documentation/v2/sidebar.html
index ed3a1bc6e6..431540a977 100644
--- a/documentation/v2/sidebar.html
+++ b/documentation/v2/sidebar.html
@@ -1,5 +1,6 @@
 <nav id="contents" class="navbar contents">
   <nav class="nav flex-column contents-column">
+    <a href="#try" class="nav-link d-md-none" data-action="sidebar-nav" data-toggle="try">Try CoffeeScript</a>
     <a href="#top" class="nav-link" data-action="sidebar-nav">Overview</a>
     <a href="#coffeescript-2" class="nav-link" data-action="sidebar-nav">CoffeeScript 2</a>
     <a href="#installation" class="nav-link" data-action="sidebar-nav">Installation</a>
@@ -53,6 +54,7 @@
         <a href="#annotated-source" class="nav-link" data-action="sidebar-nav">Annotated Source</a>
         <a href="#contributing" class="nav-link" data-action="sidebar-nav">Contributing</a>
       </nav>
+    <a href="http://github.com/jashkenas/coffeescript/" class="nav-item nav-link d-md-none" data-action="sidebar-nav">GitHub</a>
     <a href="#unsupported" class="nav-link" data-action="sidebar-nav">Unsupported ECMAScript Features</a>
       <nav class="nav flex-column">
         <a href="#unsupported-let-const" class="nav-link" data-action="sidebar-nav"><code>let</code> and <code>const</code></a>

From 99c428fb53d109eb14145423c8e41596832a0df9 Mon Sep 17 00:00:00 2001
From: Geoffrey Booth <webmaster@geoffreybooth.com>
Date: Fri, 1 Sep 2017 23:25:40 -0700
Subject: [PATCH 3/5] Fix #4642, erroneous statement about named functions

---
 documentation/sections/unsupported_named_functions.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/documentation/sections/unsupported_named_functions.md b/documentation/sections/unsupported_named_functions.md
index 08f34f73cb..35acebc2c4 100644
--- a/documentation/sections/unsupported_named_functions.md
+++ b/documentation/sections/unsupported_named_functions.md
@@ -2,4 +2,4 @@
 
 Newcomers to CoffeeScript often wonder how to generate the JavaScript `function foo() {}`, as opposed to the `foo = function() {}` that CoffeeScript produces. The first form is a [function declaration](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function), and the second is a [function expression](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/function). As stated above, in CoffeeScript [everything is an expression](#expressions), so naturally we favor the expression form. Supporting only one variant helps avoid confusing bugs that can arise from the [subtle differences between the two forms](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function#Function_declaration_hoisting).
 
-Technically, `foo = function() {}` is creating an anonymous function that gets assigned to a variable named `foo`. Some very early versions of CoffeeScript named this function, e.g. `foo = function foo() {}`, but this was dropped because of compatibility issues with Internet Explorer. For a while this annoyed people, as these functions would be unnamed in stack traces; but modern JavaScript runtimes [infer the names of such anonymous functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name) from the names of the variables to which they’re assigned. Given that this is the case, and given that not all functions in function expressions can be named (for example, the functions in `first.fn = ->; second.fn = ->` can’t both be named `fn`) it’s simplest to just preserve the current behavior.
+Technically, `foo = function() {}` is creating an anonymous function that gets assigned to a variable named `foo`. Some very early versions of CoffeeScript named this function, e.g. `foo = function foo() {}`, but this was dropped because of compatibility issues with Internet Explorer. For a while this annoyed people, as these functions would be unnamed in stack traces; but modern JavaScript runtimes [infer the names of such anonymous functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name) from the names of the variables to which they’re assigned. Given that this is the case, it’s simplest to just preserve the current behavior.

From cf944d4d5a88e09b647f5b2282d6683dd891d529 Mon Sep 17 00:00:00 2001
From: Geoffrey Booth <webmaster@geoffreybooth.com>
Date: Fri, 1 Sep 2017 23:37:48 -0700
Subject: [PATCH 4/5] Update packages

---
 package-lock.json | 779 +++++++++++++++++++++++++++++++++-------------
 package.json      |   6 +-
 2 files changed, 559 insertions(+), 226 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index c08ef5c63e..dc1acd15fe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,9 +1,21 @@
 {
   "name": "coffeescript",
-  "version": "2.0.0-beta3",
+  "version": "2.0.0-beta5",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "JSONSelect": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/JSONSelect/-/JSONSelect-0.4.0.tgz",
+      "integrity": "sha1-oI7cxn6z/L6Z7WMIVTRKDPKCu40=",
+      "dev": true
+    },
+    "JSV": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/JSV/-/JSV-4.0.2.tgz",
+      "integrity": "sha1-0Hf2glVx+CEy+d/67Vh7QCn+/1c=",
+      "dev": true
+    },
     "acorn": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.1.1.tgz",
@@ -39,6 +51,12 @@
         "json-stable-stringify": "1.0.1"
       }
     },
+    "ajv-keywords": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.0.tgz",
+      "integrity": "sha1-opbhf3v658HOT34N5T0pyzIWLfA=",
+      "dev": true
+    },
     "align-text": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
@@ -121,7 +139,7 @@
       "integrity": "sha1-SLokC0WpKA6UdImQull9IWYX/UA=",
       "dev": true,
       "requires": {
-        "bn.js": "4.11.7",
+        "bn.js": "4.11.8",
         "inherits": "2.0.3",
         "minimalistic-assert": "1.0.0"
       }
@@ -156,7 +174,7 @@
       "integrity": "sha1-IHzXBbumFImy6kG1MSNBz2rKIoM=",
       "dev": true,
       "requires": {
-        "babel-core": "6.25.0",
+        "babel-core": "6.26.0",
         "babel-polyfill": "6.23.0",
         "babel-register": "6.24.1",
         "babel-runtime": "6.23.0",
@@ -185,21 +203,21 @@
       }
     },
     "babel-core": {
-      "version": "6.25.0",
-      "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.25.0.tgz",
-      "integrity": "sha1-fdQrBGPHQunVKW3rPsZ6kyLa1yk=",
+      "version": "6.26.0",
+      "resolved": "https://registry.npmjs.org/babel-core/-/babel-core-6.26.0.tgz",
+      "integrity": "sha1-rzL3izGm/O8RnIew/Y2XU/A6C7g=",
       "dev": true,
       "requires": {
-        "babel-code-frame": "6.22.0",
-        "babel-generator": "6.25.0",
+        "babel-code-frame": "6.26.0",
+        "babel-generator": "6.26.0",
         "babel-helpers": "6.24.1",
         "babel-messages": "6.23.0",
-        "babel-register": "6.24.1",
-        "babel-runtime": "6.23.0",
-        "babel-template": "6.25.0",
-        "babel-traverse": "6.25.0",
-        "babel-types": "6.25.0",
-        "babylon": "6.17.4",
+        "babel-register": "6.26.0",
+        "babel-runtime": "6.26.0",
+        "babel-template": "6.26.0",
+        "babel-traverse": "6.26.0",
+        "babel-types": "6.26.0",
+        "babylon": "6.18.0",
         "convert-source-map": "1.5.0",
         "debug": "2.6.8",
         "json5": "0.5.1",
@@ -209,22 +227,150 @@
         "private": "0.1.7",
         "slash": "1.0.0",
         "source-map": "0.5.6"
+      },
+      "dependencies": {
+        "babel-code-frame": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
+          "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+          "dev": true,
+          "requires": {
+            "chalk": "1.1.3",
+            "esutils": "2.0.2",
+            "js-tokens": "3.0.2"
+          }
+        },
+        "babel-register": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-register/-/babel-register-6.26.0.tgz",
+          "integrity": "sha1-btAhFz4vy0htestFxgCahW9kcHE=",
+          "dev": true,
+          "requires": {
+            "babel-core": "6.26.0",
+            "babel-runtime": "6.26.0",
+            "core-js": "2.5.1",
+            "home-or-tmp": "2.0.0",
+            "lodash": "4.17.4",
+            "mkdirp": "0.5.1",
+            "source-map-support": "0.4.15"
+          }
+        },
+        "babel-runtime": {
+          "version": "6.26.0",
+          "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.26.0.tgz",
+          "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
+          "dev": true,
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+      "version": "3.5.5",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-3.5.5.tgz",
+      "integrity": "sha512-qeUx4nIbeLL53qqNTs3kObPBMkUVDrOjEfp/hTvMlx21qL2MsGNr8/tXCoX/lS12dLl9qtZaXv2qfBEctPScDg==",
       "dev": true,
       "requires": {
         "acorn": "5.1.1",
@@ -4355,10 +4664,10 @@
         "ajv": "5.2.2",
         "ajv-keywords": "2.1.0",
         "async": "2.5.0",
-        "enhanced-resolve": "3.3.0",
+        "enhanced-resolve": "3.4.1",
         "escope": "3.6.0",
         "interpret": "1.0.3",
-        "json-loader": "0.5.4",
+        "json-loader": "0.5.7",
         "json5": "0.5.1",
         "loader-runner": "2.3.0",
         "loader-utils": "1.1.0",
@@ -4366,38 +4675,21 @@
         "mkdirp": "0.5.1",
         "node-libs-browser": "2.0.0",
         "source-map": "0.5.6",
-        "supports-color": "3.2.3",
-        "tapable": "0.2.6",
+        "supports-color": "4.4.0",
+        "tapable": "0.2.8",
         "uglifyjs-webpack-plugin": "0.4.6",
-        "watchpack": "1.3.1",
+        "watchpack": "1.4.0",
         "webpack-sources": "1.0.1",
-        "yargs": "6.6.0"
+        "yargs": "8.0.2"
       },
       "dependencies": {
-        "ajv-keywords": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-2.1.0.tgz",
-          "integrity": "sha1-opbhf3v658HOT34N5T0pyzIWLfA=",
-          "dev": true
-        },
         "supports-color": {
-          "version": "3.2.3",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
-          "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
-          "dev": true,
-          "requires": {
-            "has-flag": "1.0.0"
-          }
-        },
-        "uglifyjs-webpack-plugin": {
-          "version": "0.4.6",
-          "resolved": "https://registry.npmjs.org/uglifyjs-webpack-plugin/-/uglifyjs-webpack-plugin-0.4.6.tgz",
-          "integrity": "sha1-uVH0q7a9YX5m9j64kUmOORdj4wk=",
+          "version": "4.4.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.4.0.tgz",
+          "integrity": "sha512-rKC3+DyXWgK0ZLKwmRsrkyHVZAjNkfzeehuFWdGGcqGDTZFH73+RH6S/RDAAxl9GusSjZSUWYLmT9N5pzXFOXQ==",
           "dev": true,
           "requires": {
-            "source-map": "0.5.6",
-            "uglify-js": "2.8.29",
-            "webpack-sources": "1.0.1"
+            "has-flag": "2.0.0"
           }
         }
       }
@@ -4412,10 +4704,19 @@
         "source-map": "0.5.6"
       }
     },
+    "which": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
+      "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
+      "dev": true,
+      "requires": {
+        "isexe": "2.0.0"
+      }
+    },
     "which-module": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/which-module/-/which-module-1.0.0.tgz",
-      "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
       "dev": true
     },
     "window-size": {
@@ -4438,6 +4739,19 @@
       "requires": {
         "string-width": "1.0.2",
         "strip-ansi": "3.0.1"
+      },
+      "dependencies": {
+        "string-width": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "dev": true,
+          "requires": {
+            "code-point-at": "1.1.0",
+            "is-fullwidth-code-point": "1.0.0",
+            "strip-ansi": "3.0.1"
+          }
+        }
       }
     },
     "wrappy": {
@@ -4458,31 +4772,37 @@
       "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
       "dev": true
     },
+    "yallist": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "dev": true
+    },
     "yargs": {
-      "version": "6.6.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-6.6.0.tgz",
-      "integrity": "sha1-eC7CHvQDNF+DCoCMo9UTr1YGUgg=",
+      "version": "8.0.2",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-8.0.2.tgz",
+      "integrity": "sha1-YpmpBVsc78lp/355wdkY3Osiw2A=",
       "dev": true,
       "requires": {
-        "camelcase": "3.0.0",
+        "camelcase": "4.1.0",
         "cliui": "3.2.0",
         "decamelize": "1.2.0",
         "get-caller-file": "1.0.2",
-        "os-locale": "1.4.0",
-        "read-pkg-up": "1.0.1",
+        "os-locale": "2.1.0",
+        "read-pkg-up": "2.0.0",
         "require-directory": "2.1.1",
         "require-main-filename": "1.0.1",
         "set-blocking": "2.0.0",
-        "string-width": "1.0.2",
-        "which-module": "1.0.0",
+        "string-width": "2.1.1",
+        "which-module": "2.0.0",
         "y18n": "3.2.1",
-        "yargs-parser": "4.2.1"
+        "yargs-parser": "7.0.0"
       },
       "dependencies": {
         "camelcase": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
           "dev": true
         },
         "cliui": {
@@ -4494,23 +4814,36 @@
             "string-width": "1.0.2",
             "strip-ansi": "3.0.1",
             "wrap-ansi": "2.1.0"
+          },
+          "dependencies": {
+            "string-width": {
+              "version": "1.0.2",
+              "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+              "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+              "dev": true,
+              "requires": {
+                "code-point-at": "1.1.0",
+                "is-fullwidth-code-point": "1.0.0",
+                "strip-ansi": "3.0.1"
+              }
+            }
           }
         }
       }
     },
     "yargs-parser": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-4.2.1.tgz",
-      "integrity": "sha1-KczqwNxPA8bIe0qfIX3RjJ90hxw=",
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-7.0.0.tgz",
+      "integrity": "sha1-jQrELxbqVd69MyyvTEA4s+P139k=",
       "dev": true,
       "requires": {
-        "camelcase": "3.0.0"
+        "camelcase": "4.1.0"
       },
       "dependencies": {
         "camelcase": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
-          "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
           "dev": true
         }
       }
diff --git a/package.json b/package.json
index a6212a0d39..2e0ec9b6f5 100644
--- a/package.json
+++ b/package.json
@@ -39,16 +39,16 @@
     "url": "git://github.com/jashkenas/coffeescript.git"
   },
   "devDependencies": {
-    "babel-core": "~6.25.0",
+    "babel-core": "~6.26.0",
     "babel-preset-babili": "~0.1.4",
     "babel-preset-env": "~1.6.0",
     "babili": "^0.1.4",
     "docco": "~0.7.0",
     "highlight.js": "~9.12.0",
     "jison": ">=0.4.17",
-    "markdown-it": "~8.3.1",
+    "markdown-it": "~8.4.0",
     "underscore": "~1.8.3",
-    "webpack": "~3.2.0"
+    "webpack": "~3.5.5"
   },
   "dependencies": {}
 }

From 2547120d5eff27e1f68ebdcce63f9e91059634b1 Mon Sep 17 00:00:00 2001
From: Geoffrey Booth <webmaster@geoffreybooth.com>
Date: Fri, 1 Sep 2017 23:40:55 -0700
Subject: [PATCH 5/5] 2.0.0-beta5

---
 docs/v2/annotated-source/coffeescript.html    |  98 ++-
 docs/v2/annotated-source/command.html         | 213 +++---
 docs/v2/annotated-source/grammar.html         |   1 +
 docs/v2/annotated-source/lexer.html           | 293 +++++---
 docs/v2/annotated-source/nodes.html           | 612 ++++++++--------
 .../public/fonts/roboto-black.eot             | Bin
 .../public/fonts/roboto-black.ttf             | Bin
 .../public/fonts/roboto-black.woff            | Bin
 docs/v2/annotated-source/repl.html            |   6 +-
 docs/v2/annotated-source/rewriter.html        | 110 ++-
 docs/v2/annotated-source/sourcemap.html       |  11 +-
 docs/v2/browser-compiler/coffeescript.js      |   4 +-
 docs/v2/index.html                            | 636 +++++++----------
 docs/v2/test.html                             | 662 ++++++++++++++++--
 documentation/sections/changelog.md           |  16 +
 lib/coffeescript/browser.js                   |   2 +-
 lib/coffeescript/cake.js                      |   2 +-
 lib/coffeescript/coffeescript.js              |   2 +-
 lib/coffeescript/command.js                   |   2 +-
 lib/coffeescript/grammar.js                   |   2 +-
 lib/coffeescript/helpers.js                   |   2 +-
 lib/coffeescript/index.js                     |   2 +-
 lib/coffeescript/lexer.js                     |   2 +-
 lib/coffeescript/nodes.js                     |   2 +-
 lib/coffeescript/optparse.js                  |   2 +-
 lib/coffeescript/parser.js                    |   0
 lib/coffeescript/register.js                  |   2 +-
 lib/coffeescript/repl.js                      |   2 +-
 lib/coffeescript/rewriter.js                  |   2 +-
 lib/coffeescript/scope.js                     |   2 +-
 lib/coffeescript/sourcemap.js                 |   2 +-
 package.json                                  |   2 +-
 32 files changed, 1682 insertions(+), 1012 deletions(-)
 mode change 100755 => 100644 docs/v2/annotated-source/public/fonts/roboto-black.eot
 mode change 100755 => 100644 docs/v2/annotated-source/public/fonts/roboto-black.ttf
 mode change 100755 => 100644 docs/v2/annotated-source/public/fonts/roboto-black.woff
 mode change 100755 => 100644 lib/coffeescript/parser.js

diff --git a/docs/v2/annotated-source/coffeescript.html b/docs/v2/annotated-source/coffeescript.html
index f406c8cb09..1df618c364 100644
--- a/docs/v2/annotated-source/coffeescript.html
+++ b/docs/v2/annotated-source/coffeescript.html
@@ -159,7 +159,7 @@ <h1>coffeescript.coffee</h1>
             
             <div class="content"><div class='highlight'><pre>exports.VERSION = packageJson.version
 
-exports.FILE_EXTENSIONS = [<span class="hljs-string">'.coffee'</span>, <span class="hljs-string">'.litcoffee'</span>, <span class="hljs-string">'.coffee.md'</span>]</pre></div></div>
+exports.FILE_EXTENSIONS = FILE_EXTENSIONS = [<span class="hljs-string">'.coffee'</span>, <span class="hljs-string">'.litcoffee'</span>, <span class="hljs-string">'.coffee.md'</span>]</pre></div></div>
             
         </li>
         
@@ -252,7 +252,7 @@ <h1>coffeescript.coffee</h1>
 a stack trace. Assuming that most of the time, code isn’t throwing
 exceptions, it’s probably more efficient to compile twice only when we
 need a stack trace, rather than always generating a source map even when
-it’s not likely to be used. Save in form of <code>filename</code>: <code>(source)</code></p>
+it’s not likely to be used. Save in form of <code>filename</code>: [<code>(source)</code>]</p>
 
             </div>
             
@@ -267,7 +267,7 @@ <h1>coffeescript.coffee</h1>
               <div class="pilwrap ">
                 <a class="pilcrow" href="#section-9">&#182;</a>
               </div>
-              <p>Also save source maps if generated, in form of <code>filename</code>: <code>(source map)</code>.</p>
+              <p>Also save source maps if generated, in form of <code>(source)</code>: [<code>(source map)</code>].</p>
 
             </div>
             
@@ -317,7 +317,8 @@ <h1>coffeescript.coffee</h1>
 
   checkShebangLine filename, code
 
-  sources[filename] = code
+  sources[filename] ?= []
+  sources[filename].push code
   map = <span class="hljs-keyword">new</span> SourceMap <span class="hljs-keyword">if</span> generateSourceMap
 
   tokens = lexer.tokenize code, options</pre></div></div>
@@ -428,8 +429,9 @@ <h1>coffeescript.coffee</h1>
     js = <span class="hljs-string">"// <span class="hljs-subst">#{header}</span>\n<span class="hljs-subst">#{js}</span>"</span>
 
   <span class="hljs-keyword">if</span> generateSourceMap
-    v3SourceMap = map.generate(options, code)
-    sourceMaps[filename] = map
+    v3SourceMap = map.generate options, code
+    sourceMaps[filename] ?= []
+    sourceMaps[filename].push map
 
   <span class="hljs-keyword">if</span> options.inlineMap
     encoded = base64encode JSON.stringify v3SourceMap
@@ -701,9 +703,7 @@ <h1>coffeescript.coffee</h1>
   <span class="hljs-keyword">else</span>
     fileLocation
 <span class="hljs-function">
-<span class="hljs-title">getSourceMap</span> = <span class="hljs-params">(filename)</span> -&gt;</span>
-  <span class="hljs-keyword">if</span> sourceMaps[filename]?
-    sourceMaps[filename]</pre></div></div>
+<span class="hljs-title">getSourceMap</span> = <span class="hljs-params">(filename, line, column)</span> -&gt;</span></pre></div></div>
             
         </li>
         
@@ -714,16 +714,76 @@ <h1>coffeescript.coffee</h1>
               <div class="pilwrap ">
                 <a class="pilcrow" href="#section-28">&#182;</a>
               </div>
-              <p>CoffeeScript compiled in a browser may get compiled with <code>options.filename</code>
-of <code>&lt;anonymous&gt;</code>, but the browser may request the stack trace with the
-filename of the script file.</p>
+              <p>Skip files that we didn’t compile, like Node system files that appear in
+the stack trace, as they never have source maps.</p>
 
             </div>
             
-            <div class="content"><div class='highlight'><pre>  <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> sourceMaps[<span class="hljs-string">'&lt;anonymous&gt;'</span>]?
-    sourceMaps[<span class="hljs-string">'&lt;anonymous&gt;'</span>]
-  <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> sources[filename]?
-    answer = compile sources[filename],
+            <div class="content"><div class='highlight'><pre>  <span class="hljs-keyword">return</span> <span class="hljs-literal">null</span> <span class="hljs-keyword">unless</span> filename <span class="hljs-keyword">is</span> <span class="hljs-string">'&lt;anonymous&gt;'</span> <span class="hljs-keyword">or</span> filename.slice(filename.lastIndexOf(<span class="hljs-string">'.'</span>)) <span class="hljs-keyword">in</span> FILE_EXTENSIONS
+
+  <span class="hljs-keyword">if</span> filename <span class="hljs-keyword">isnt</span> <span class="hljs-string">'&lt;anonymous&gt;'</span> <span class="hljs-keyword">and</span> sourceMaps[filename]?
+    <span class="hljs-keyword">return</span> sourceMaps[filename][sourceMaps[filename].length - <span class="hljs-number">1</span>]</pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-29">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-29">&#182;</a>
+              </div>
+              <p>CoffeeScript compiled in a browser or via <code>CoffeeScript.compile</code> or <code>.run</code>
+may get compiled with <code>options.filename</code> that’s missing, which becomes
+<code>&lt;anonymous&gt;</code>; but the runtime might request the stack trace with the
+filename of the script file. See if we have a source map cached under
+<code>&lt;anonymous&gt;</code> that matches the error.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>  <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> sourceMaps[<span class="hljs-string">'&lt;anonymous&gt;'</span>]?</pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-30">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-30">&#182;</a>
+              </div>
+              <p>Work backwards from the most recent anonymous source maps, until we find
+one that works. This isn’t foolproof; there is a chance that multiple
+source maps will have line/column pairs that match. But we have no other
+way to match them. <code>frame.getFunction().toString()</code> doesn’t always work,
+and it’s not foolproof either.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>    <span class="hljs-keyword">for</span> map <span class="hljs-keyword">in</span> sourceMaps[<span class="hljs-string">'&lt;anonymous&gt;'</span>] <span class="hljs-keyword">by</span> <span class="hljs-number">-1</span>
+      sourceLocation = map.sourceLocation [line - <span class="hljs-number">1</span>, column - <span class="hljs-number">1</span>]
+      <span class="hljs-keyword">return</span> map <span class="hljs-keyword">if</span> sourceLocation?[<span class="hljs-number">0</span>]? <span class="hljs-keyword">and</span> sourceLocation[<span class="hljs-number">1</span>]?</pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-31">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-31">&#182;</a>
+              </div>
+              <p>If all else fails, recompile this source to get a source map. We need the
+previous section (for <code>&lt;anonymous&gt;</code>) despite this option, because after it
+gets compiled we will still need to look it up from
+<code>sourceMaps[&#39;&lt;anonymous&gt;&#39;]</code> in order to find and return it. That’s why we
+start searching from the end in the previous block, because most of the
+time the source map we want is the last one.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>  <span class="hljs-keyword">if</span> sources[filename]?
+    answer = compile sources[filename][sources[filename].length - <span class="hljs-number">1</span>],
       filename: filename
       sourceMap: <span class="hljs-literal">yes</span>
       literate: helpers.isLiterate filename
@@ -734,11 +794,11 @@ <h1>coffeescript.coffee</h1>
         </li>
         
         
-        <li id="section-29">
+        <li id="section-32">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-29">&#182;</a>
+                <a class="pilcrow" href="#section-32">&#182;</a>
               </div>
               <p>Based on <a href="http://goo.gl/ZTx1p">michaelficarra/CoffeeScriptRedux</a>
 NodeJS / V8 have no support for transforming positions in stack traces using
@@ -749,7 +809,7 @@ <h1>coffeescript.coffee</h1>
             
             <div class="content"><div class='highlight'><pre>Error.prepareStackTrace = <span class="hljs-function"><span class="hljs-params">(err, stack)</span> -&gt;</span>
 <span class="hljs-function">  <span class="hljs-title">getSourceMapping</span> = <span class="hljs-params">(filename, line, column)</span> -&gt;</span>
-    sourceMap = getSourceMap filename
+    sourceMap = getSourceMap filename, line, column
     answer = sourceMap.sourceLocation [line - <span class="hljs-number">1</span>, column - <span class="hljs-number">1</span>] <span class="hljs-keyword">if</span> sourceMap?
     <span class="hljs-keyword">if</span> answer? <span class="hljs-keyword">then</span> [answer[<span class="hljs-number">0</span>] + <span class="hljs-number">1</span>, answer[<span class="hljs-number">1</span>] + <span class="hljs-number">1</span>] <span class="hljs-keyword">else</span> <span class="hljs-literal">null</span>
 
diff --git a/docs/v2/annotated-source/command.html b/docs/v2/annotated-source/command.html
index 2d047c485b..6e0c69be05 100644
--- a/docs/v2/annotated-source/command.html
+++ b/docs/v2/annotated-source/command.html
@@ -199,25 +199,25 @@ <h1>command.coffee</h1>
             </div>
             
             <div class="content"><div class='highlight'><pre>SWITCHES = [
-  [<span class="hljs-string">'-b'</span>, <span class="hljs-string">'--bare'</span>,            <span class="hljs-string">'compile without a top-level function wrapper'</span>]
-  [<span class="hljs-string">'-c'</span>, <span class="hljs-string">'--compile'</span>,         <span class="hljs-string">'compile to JavaScript and save as .js files'</span>]
-  [<span class="hljs-string">'-e'</span>, <span class="hljs-string">'--eval'</span>,            <span class="hljs-string">'pass a string from the command line as input'</span>]
-  [<span class="hljs-string">'-h'</span>, <span class="hljs-string">'--help'</span>,            <span class="hljs-string">'display this help message'</span>]
-  [<span class="hljs-string">'-i'</span>, <span class="hljs-string">'--interactive'</span>,     <span class="hljs-string">'run an interactive CoffeeScript REPL'</span>]
-  [<span class="hljs-string">'-j'</span>, <span class="hljs-string">'--join [FILE]'</span>,     <span class="hljs-string">'concatenate the source CoffeeScript before compiling'</span>]
-  [<span class="hljs-string">'-m'</span>, <span class="hljs-string">'--map'</span>,             <span class="hljs-string">'generate source map and save as .js.map files'</span>]
-  [<span class="hljs-string">'-M'</span>, <span class="hljs-string">'--inline-map'</span>,      <span class="hljs-string">'generate source map and include it directly in output'</span>]
-  [<span class="hljs-string">'-n'</span>, <span class="hljs-string">'--nodes'</span>,           <span class="hljs-string">'print out the parse tree that the parser produces'</span>]
-  [      <span class="hljs-string">'--nodejs [ARGS]'</span>,   <span class="hljs-string">'pass options directly to the "node" binary'</span>]
-  [      <span class="hljs-string">'--no-header'</span>,       <span class="hljs-string">'suppress the "Generated by" header'</span>]
-  [<span class="hljs-string">'-o'</span>, <span class="hljs-string">'--output [DIR]'</span>,    <span class="hljs-string">'set the output directory for compiled JavaScript'</span>]
-  [<span class="hljs-string">'-p'</span>, <span class="hljs-string">'--print'</span>,           <span class="hljs-string">'print out the compiled JavaScript'</span>]
+  [<span class="hljs-string">'-b'</span>, <span class="hljs-string">'--bare'</span>,              <span class="hljs-string">'compile without a top-level function wrapper'</span>]
+  [<span class="hljs-string">'-c'</span>, <span class="hljs-string">'--compile'</span>,           <span class="hljs-string">'compile to JavaScript and save as .js files'</span>]
+  [<span class="hljs-string">'-e'</span>, <span class="hljs-string">'--eval'</span>,              <span class="hljs-string">'pass a string from the command line as input'</span>]
+  [<span class="hljs-string">'-h'</span>, <span class="hljs-string">'--help'</span>,              <span class="hljs-string">'display this help message'</span>]
+  [<span class="hljs-string">'-i'</span>, <span class="hljs-string">'--interactive'</span>,       <span class="hljs-string">'run an interactive CoffeeScript REPL'</span>]
+  [<span class="hljs-string">'-j'</span>, <span class="hljs-string">'--join [FILE]'</span>,       <span class="hljs-string">'concatenate the source CoffeeScript before compiling'</span>]
+  [<span class="hljs-string">'-m'</span>, <span class="hljs-string">'--map'</span>,               <span class="hljs-string">'generate source map and save as .js.map files'</span>]
+  [<span class="hljs-string">'-M'</span>, <span class="hljs-string">'--inline-map'</span>,        <span class="hljs-string">'generate source map and include it directly in output'</span>]
+  [<span class="hljs-string">'-n'</span>, <span class="hljs-string">'--nodes'</span>,             <span class="hljs-string">'print out the parse tree that the parser produces'</span>]
+  [      <span class="hljs-string">'--nodejs [ARGS]'</span>,     <span class="hljs-string">'pass options directly to the "node" binary'</span>]
+  [      <span class="hljs-string">'--no-header'</span>,         <span class="hljs-string">'suppress the "Generated by" header'</span>]
+  [<span class="hljs-string">'-o'</span>, <span class="hljs-string">'--output [PATH]'</span>,     <span class="hljs-string">'set the output path or path/filename for compiled JavaScript'</span>]
+  [<span class="hljs-string">'-p'</span>, <span class="hljs-string">'--print'</span>,             <span class="hljs-string">'print out the compiled JavaScript'</span>]
   [<span class="hljs-string">'-r'</span>, <span class="hljs-string">'--require [MODULE*]'</span>, <span class="hljs-string">'require the given module before eval or REPL'</span>]
-  [<span class="hljs-string">'-s'</span>, <span class="hljs-string">'--stdio'</span>,           <span class="hljs-string">'listen for and compile scripts over stdio'</span>]
-  [<span class="hljs-string">'-l'</span>, <span class="hljs-string">'--literate'</span>,        <span class="hljs-string">'treat stdio as literate style coffeescript'</span>]
-  [<span class="hljs-string">'-t'</span>, <span class="hljs-string">'--tokens'</span>,          <span class="hljs-string">'print out the tokens that the lexer/rewriter produce'</span>]
-  [<span class="hljs-string">'-v'</span>, <span class="hljs-string">'--version'</span>,         <span class="hljs-string">'display the version number'</span>]
-  [<span class="hljs-string">'-w'</span>, <span class="hljs-string">'--watch'</span>,           <span class="hljs-string">'watch scripts for changes and rerun commands'</span>]
+  [<span class="hljs-string">'-s'</span>, <span class="hljs-string">'--stdio'</span>,             <span class="hljs-string">'listen for and compile scripts over stdio'</span>]
+  [<span class="hljs-string">'-l'</span>, <span class="hljs-string">'--literate'</span>,          <span class="hljs-string">'treat stdio as literate style coffeescript'</span>]
+  [<span class="hljs-string">'-t'</span>, <span class="hljs-string">'--tokens'</span>,            <span class="hljs-string">'print out the tokens that the lexer/rewriter produce'</span>]
+  [<span class="hljs-string">'-v'</span>, <span class="hljs-string">'--version'</span>,           <span class="hljs-string">'display the version number'</span>]
+  [<span class="hljs-string">'-w'</span>, <span class="hljs-string">'--watch'</span>,             <span class="hljs-string">'watch scripts for changes and rerun commands'</span>]
 ]</pre></div></div>
             
         </li>
@@ -305,7 +305,45 @@ <h1>command.coffee</h1>
   process.argv = process.argv[<span class="hljs-number">0.</span><span class="hljs-number">.1</span>].concat literals
   process.argv[<span class="hljs-number">0</span>] = <span class="hljs-string">'coffee'</span>
 
-  opts.output = path.resolve opts.output  <span class="hljs-keyword">if</span> opts.output
+  <span class="hljs-keyword">if</span> opts.output
+    outputBasename = path.basename opts.output
+    <span class="hljs-keyword">if</span> <span class="hljs-string">'.'</span> <span class="hljs-keyword">in</span> outputBasename <span class="hljs-keyword">and</span>
+       outputBasename <span class="hljs-keyword">not</span> <span class="hljs-keyword">in</span> [<span class="hljs-string">'.'</span>, <span class="hljs-string">'..'</span>] <span class="hljs-keyword">and</span>
+       <span class="hljs-keyword">not</span> helpers.ends(opts.output, path.sep)</pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-9">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-9">&#182;</a>
+              </div>
+              <p>An output filename was specified, e.g. <code>/dist/scripts.js</code>.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>      opts.outputFilename = outputBasename
+      opts.outputPath = path.resolve path.dirname opts.output
+    <span class="hljs-keyword">else</span></pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-10">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-10">&#182;</a>
+              </div>
+              <p>An output path was specified, e.g. <code>/dist</code>.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>      opts.outputFilename = <span class="hljs-literal">null</span>
+      opts.outputPath = path.resolve opts.output
+
   <span class="hljs-keyword">if</span> opts.join
     opts.join = path.resolve opts.join
     <span class="hljs-built_in">console</span>.error <span class="hljs-string">'''
@@ -328,19 +366,19 @@ <h1>command.coffee</h1>
 <span class="hljs-function">
 <span class="hljs-title">makePrelude</span> = <span class="hljs-params">(requires)</span> -&gt;</span>
   requires.map (<span class="hljs-built_in">module</span>) -&gt;
-    [_, name, <span class="hljs-built_in">module</span>] = match <span class="hljs-keyword">if</span> match = <span class="hljs-built_in">module</span>.match(<span class="hljs-regexp">/^(.*)=(.*)$/</span>)
-    name ||= helpers.baseFileName <span class="hljs-built_in">module</span>, <span class="hljs-literal">yes</span>, useWinPathSep
-    <span class="hljs-string">"<span class="hljs-subst">#{name}</span> = require('<span class="hljs-subst">#{<span class="hljs-built_in">module</span>}</span>')"</span>
+    [full, name, <span class="hljs-built_in">module</span>] = match <span class="hljs-keyword">if</span> match = <span class="hljs-built_in">module</span>.match(<span class="hljs-regexp">/^(.*)=(.*)$/</span>)
+    name <span class="hljs-keyword">or</span>= helpers.baseFileName <span class="hljs-built_in">module</span>, <span class="hljs-literal">yes</span>, useWinPathSep
+    <span class="hljs-string">"global['<span class="hljs-subst">#{name}</span>'] = require('<span class="hljs-subst">#{<span class="hljs-built_in">module</span>}</span>')"</span>
   .join <span class="hljs-string">';'</span></pre></div></div>
             
         </li>
         
         
-        <li id="section-9">
+        <li id="section-11">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-9">&#182;</a>
+                <a class="pilcrow" href="#section-11">&#182;</a>
               </div>
               <p>Compile a path, which could be a script or a directory. If a directory
 is passed, recursively compile all ‘.coffee’, ‘.litcoffee’, and ‘.coffee.md’
@@ -382,7 +420,7 @@ <h1>command.coffee</h1>
       code = fs.readFileSync source
     <span class="hljs-keyword">catch</span> err
       <span class="hljs-keyword">if</span> err.code <span class="hljs-keyword">is</span> <span class="hljs-string">'ENOENT'</span> <span class="hljs-keyword">then</span> <span class="hljs-keyword">return</span> <span class="hljs-keyword">else</span> <span class="hljs-keyword">throw</span> err
-    compileScript(source, code.toString(), base)
+    compileScript source, code.toString(), base
   <span class="hljs-keyword">else</span>
     notSources[source] = <span class="hljs-literal">yes</span>
 <span class="hljs-function">
@@ -399,53 +437,56 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-10">
+        <li id="section-12">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-10">&#182;</a>
+                <a class="pilcrow" href="#section-12">&#182;</a>
               </div>
               <p>Compile a single source script, containing the given code, according to the
-requested options. If evaluating the script directly sets <code>__filename</code>,
+requested options. If evaluating the script directly, set <code>__filename</code>,
 <code>__dirname</code> and <code>module.filename</code> to be correct relative to the script’s path.</p>
 
             </div>
             
             <div class="content"><div class='highlight'><pre><span class="hljs-function"><span class="hljs-title">compileScript</span> = <span class="hljs-params">(file, input, base = <span class="hljs-literal">null</span>)</span> -&gt;</span>
-  o = opts
   options = compileOptions file, base
   <span class="hljs-keyword">try</span>
-    t = task = {file, input, options}
+    task = {file, input, options}
     CoffeeScript.emit <span class="hljs-string">'compile'</span>, task
-    <span class="hljs-keyword">if</span> o.tokens
-      printTokens CoffeeScript.tokens t.input, t.options
-    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> o.nodes
-      printLine CoffeeScript.nodes(t.input, t.options).toString().trim()
-    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> o.run
+    <span class="hljs-keyword">if</span> opts.tokens
+      printTokens CoffeeScript.tokens task.input, task.options
+    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> opts.nodes
+      printLine CoffeeScript.nodes(task.input, task.options).toString().trim()
+    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> opts.run
       CoffeeScript.register()
-      CoffeeScript.eval opts.prelude, t.options <span class="hljs-keyword">if</span> opts.prelude
-      CoffeeScript.run t.input, t.options
-    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> o.join <span class="hljs-keyword">and</span> t.file <span class="hljs-keyword">isnt</span> o.join
-      t.input = helpers.invertLiterate t.input <span class="hljs-keyword">if</span> helpers.isLiterate file
-      sourceCode[sources.indexOf(t.file)] = t.input
+      CoffeeScript.eval opts.prelude, task.options <span class="hljs-keyword">if</span> opts.prelude
+      CoffeeScript.run task.input, task.options
+    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> opts.join <span class="hljs-keyword">and</span> task.file <span class="hljs-keyword">isnt</span> opts.join
+      task.input = helpers.invertLiterate task.input <span class="hljs-keyword">if</span> helpers.isLiterate file
+      sourceCode[sources.indexOf(task.file)] = task.input
       compileJoin()
     <span class="hljs-keyword">else</span>
-      compiled = CoffeeScript.compile t.input, t.options
-      t.output = compiled
-      <span class="hljs-keyword">if</span> o.map
-        t.output = compiled.js
-        t.sourceMap = compiled.v3SourceMap
+      compiled = CoffeeScript.compile task.input, task.options
+      task.output = compiled
+      <span class="hljs-keyword">if</span> opts.map
+        task.output = compiled.js
+        task.sourceMap = compiled.v3SourceMap
 
       CoffeeScript.emit <span class="hljs-string">'success'</span>, task
-      <span class="hljs-keyword">if</span> o.<span class="hljs-built_in">print</span>
-        printLine t.output.trim()
-      <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> o.compile <span class="hljs-keyword">or</span> o.map
-        writeJs base, t.file, t.output, options.jsPath, t.sourceMap
+      <span class="hljs-keyword">if</span> opts.<span class="hljs-built_in">print</span>
+        printLine task.output.trim()
+      <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> opts.compile <span class="hljs-keyword">or</span> opts.map
+        saveTo = <span class="hljs-keyword">if</span> opts.outputFilename <span class="hljs-keyword">and</span> sources.length <span class="hljs-keyword">is</span> <span class="hljs-number">1</span>
+          path.join opts.outputPath, opts.outputFilename
+        <span class="hljs-keyword">else</span>
+          options.jsPath
+        writeJs base, task.file, task.output, saveTo, task.sourceMap
   <span class="hljs-keyword">catch</span> err
     CoffeeScript.emit <span class="hljs-string">'failure'</span>, err, task
     <span class="hljs-keyword">return</span> <span class="hljs-keyword">if</span> CoffeeScript.listeners(<span class="hljs-string">'failure'</span>).length
     message = err?.stack <span class="hljs-keyword">or</span> <span class="hljs-string">"<span class="hljs-subst">#{err}</span>"</span>
-    <span class="hljs-keyword">if</span> o.watch
+    <span class="hljs-keyword">if</span> opts.watch
       printLine message + <span class="hljs-string">'\x07'</span>
     <span class="hljs-keyword">else</span>
       printWarn message
@@ -454,11 +495,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-11">
+        <li id="section-13">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-11">&#182;</a>
+                <a class="pilcrow" href="#section-13">&#182;</a>
               </div>
               <p>Attach the appropriate listeners to compile scripts incoming over <strong>stdin</strong>,
 and write them back to <strong>stdout</strong>.</p>
@@ -476,11 +517,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-12">
+        <li id="section-14">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-12">&#182;</a>
+                <a class="pilcrow" href="#section-14">&#182;</a>
               </div>
               <p>If all of the source files are done being read, concatenate and compile
 them together.</p>
@@ -498,11 +539,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-13">
+        <li id="section-15">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-13">&#182;</a>
+                <a class="pilcrow" href="#section-15">&#182;</a>
               </div>
               <p>Watch a source CoffeeScript file using <code>fs.watch</code>, recompiling it every
 time the file is updated. May be used in combination with other options,
@@ -558,11 +599,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-14">
+        <li id="section-16">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-14">&#182;</a>
+                <a class="pilcrow" href="#section-16">&#182;</a>
               </div>
               <p>Watch a directory of files for new additions.</p>
 
@@ -609,11 +650,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-15">
+        <li id="section-17">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-15">&#182;</a>
+                <a class="pilcrow" href="#section-17">&#182;</a>
               </div>
               <p>Remove a file from our source list, and source code cache. Optionally remove
 the compiled JS version as well.</p>
@@ -638,11 +679,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-16">
+        <li id="section-18">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-16">&#182;</a>
+                <a class="pilcrow" href="#section-18">&#182;</a>
               </div>
               <p>Get the corresponding output JavaScript path for a source file.</p>
 
@@ -651,22 +692,22 @@ <h1>command.coffee</h1>
             <div class="content"><div class='highlight'><pre><span class="hljs-function"><span class="hljs-title">outputPath</span> = <span class="hljs-params">(source, base, extension=<span class="hljs-string">".js"</span>)</span> -&gt;</span>
   basename  = helpers.baseFileName source, <span class="hljs-literal">yes</span>, useWinPathSep
   srcDir    = path.dirname source
-  <span class="hljs-keyword">if</span> <span class="hljs-keyword">not</span> opts.output
-    dir = srcDir
+  dir = <span class="hljs-keyword">unless</span> opts.outputPath
+    srcDir
   <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> source <span class="hljs-keyword">is</span> base
-    dir = opts.output
+    opts.outputPath
   <span class="hljs-keyword">else</span>
-    dir = path.join opts.output, path.relative base, srcDir
+    path.join opts.outputPath, path.relative base, srcDir
   path.join dir, basename + extension</pre></div></div>
             
         </li>
         
         
-        <li id="section-17">
+        <li id="section-19">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-17">&#182;</a>
+                <a class="pilcrow" href="#section-19">&#182;</a>
               </div>
               <p>Recursively mkdir, like <code>mkdir -p</code>.</p>
 
@@ -688,11 +729,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-18">
+        <li id="section-20">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-18">&#182;</a>
+                <a class="pilcrow" href="#section-20">&#182;</a>
               </div>
               <p>Write out a JavaScript source file with the compiled code. By default, files
 are written out in <code>cwd</code> as <code>.js</code> files with the same name, but the output
@@ -726,11 +767,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-19">
+        <li id="section-21">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-19">&#182;</a>
+                <a class="pilcrow" href="#section-21">&#182;</a>
               </div>
               <p>Convenience for cleaner setTimeouts.</p>
 
@@ -741,11 +782,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-20">
+        <li id="section-22">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-20">&#182;</a>
+                <a class="pilcrow" href="#section-22">&#182;</a>
               </div>
               <p>When watching scripts, it’s useful to log changes with the timestamp.</p>
 
@@ -757,11 +798,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-21">
+        <li id="section-23">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-21">&#182;</a>
+                <a class="pilcrow" href="#section-23">&#182;</a>
               </div>
               <p>Pretty-print a stream of tokens, sans location data.</p>
 
@@ -777,11 +818,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-22">
+        <li id="section-24">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-22">&#182;</a>
+                <a class="pilcrow" href="#section-24">&#182;</a>
               </div>
               <p>Use the <a href="optparse.html">OptionParser module</a> to extract all options from
 <code>process.argv</code> that are specified in <code>SWITCHES</code>.</p>
@@ -797,11 +838,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-23">
+        <li id="section-25">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-23">&#182;</a>
+                <a class="pilcrow" href="#section-25">&#182;</a>
               </div>
               <p>The compile-time options to pass to the CoffeeScript compiler.</p>
 
@@ -837,11 +878,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-24">
+        <li id="section-26">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-24">&#182;</a>
+                <a class="pilcrow" href="#section-26">&#182;</a>
               </div>
               <p>Start up a new Node.js instance with the arguments in <code>--nodejs</code> passed to
 the <code>node</code> binary, preserving the other options.</p>
@@ -864,11 +905,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-25">
+        <li id="section-27">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-25">&#182;</a>
+                <a class="pilcrow" href="#section-27">&#182;</a>
               </div>
               <p>Print the <code>--help</code> usage message and exit. Deprecated switches are not
 shown.</p>
@@ -881,11 +922,11 @@ <h1>command.coffee</h1>
         </li>
         
         
-        <li id="section-26">
+        <li id="section-28">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-26">&#182;</a>
+                <a class="pilcrow" href="#section-28">&#182;</a>
               </div>
               <p>Print the <code>--version</code> message and exit.</p>
 
diff --git a/docs/v2/annotated-source/grammar.html b/docs/v2/annotated-source/grammar.html
index 8867d22e82..7d0bafd0be 100644
--- a/docs/v2/annotated-source/grammar.html
+++ b/docs/v2/annotated-source/grammar.html
@@ -788,6 +788,7 @@ <h2 id="grammatical-rules">Grammatical Rules</h2>
             <div class="content"><div class='highlight'><pre>  SimpleAssignable: [
     o <span class="hljs-string">'Identifier'</span>,                             <span class="hljs-function">-&gt;</span> <span class="hljs-keyword">new</span> Value $<span class="hljs-number">1</span>
     o <span class="hljs-string">'Value Accessor'</span>,                         <span class="hljs-function">-&gt;</span> $<span class="hljs-number">1.</span>add $<span class="hljs-number">2</span>
+    o <span class="hljs-string">'Code Accessor'</span>,                          <span class="hljs-function">-&gt;</span> <span class="hljs-keyword">new</span> Value($<span class="hljs-number">1</span>).add $<span class="hljs-number">2</span>
     o <span class="hljs-string">'ThisProperty'</span>
   ]</pre></div></div>
             
diff --git a/docs/v2/annotated-source/lexer.html b/docs/v2/annotated-source/lexer.html
index 2fe6eb2bde..9d83c6db84 100644
--- a/docs/v2/annotated-source/lexer.html
+++ b/docs/v2/annotated-source/lexer.html
@@ -395,7 +395,7 @@ <h2 id="tokenizers">Tokenizers</h2>
       <span class="hljs-keyword">return</span> id.length
     <span class="hljs-keyword">if</span> id <span class="hljs-keyword">is</span> <span class="hljs-string">'do'</span> <span class="hljs-keyword">and</span> regExSuper = <span class="hljs-regexp">/^(\s*super)(?!\(\))/</span>.exec @chunk[<span class="hljs-number">3.</span>..]
       @token <span class="hljs-string">'SUPER'</span>, <span class="hljs-string">'super'</span>
-      @token <span class="hljs-string">'CALL_START'</span>, <span class="hljs-string">'('</span>      
+      @token <span class="hljs-string">'CALL_START'</span>, <span class="hljs-string">'('</span>
       @token <span class="hljs-string">'CALL_END'</span>, <span class="hljs-string">')'</span>
       [input, sup] = regExSuper
       <span class="hljs-keyword">return</span> sup.length + <span class="hljs-number">3</span>
@@ -1000,7 +1000,7 @@ <h2 id="tokenizers">Tokenizers</h2>
         @token <span class="hljs-string">'OUTDENT'</span>, moveOut, <span class="hljs-number">0</span>, outdentLength
         moveOut -= dent
     @outdebt -= moveOut <span class="hljs-keyword">if</span> dent
-    @tokens.pop() <span class="hljs-keyword">while</span> @value() <span class="hljs-keyword">is</span> <span class="hljs-string">';'</span>
+    @suppressSemicolons()
 
     @token <span class="hljs-string">'TERMINATOR'</span>, <span class="hljs-string">'\n'</span>, outdentLength, <span class="hljs-number">0</span> <span class="hljs-keyword">unless</span> @tag() <span class="hljs-keyword">is</span> <span class="hljs-string">'TERMINATOR'</span> <span class="hljs-keyword">or</span> noNewlines
     @indent = decreasedIndent
@@ -1042,7 +1042,7 @@ <h2 id="tokenizers">Tokenizers</h2>
             </div>
             
             <div class="content"><div class='highlight'><pre>  newlineToken: <span class="hljs-function"><span class="hljs-params">(offset)</span> -&gt;</span>
-    @tokens.pop() <span class="hljs-keyword">while</span> @value() <span class="hljs-keyword">is</span> <span class="hljs-string">';'</span>
+    @suppressSemicolons()
     @token <span class="hljs-string">'TERMINATOR'</span>, <span class="hljs-string">'\n'</span>, offset, <span class="hljs-number">0</span> <span class="hljs-keyword">unless</span> @tag() <span class="hljs-keyword">is</span> <span class="hljs-string">'TERMINATOR'</span>
     <span class="hljs-keyword">this</span></pre></div></div>
             
@@ -1278,9 +1278,10 @@ <h2 id="tokenizers">Tokenizers</h2>
       @exportSpecifierList = <span class="hljs-literal">no</span>
 
     <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">';'</span>
+      @error <span class="hljs-string">'unexpected ;'</span> <span class="hljs-keyword">if</span> prev?[<span class="hljs-number">0</span>] <span class="hljs-keyword">in</span> [<span class="hljs-string">'='</span>, UNFINISHED...]
       @seenFor = @seenImport = @seenExport = <span class="hljs-literal">no</span>
       tag = <span class="hljs-string">'TERMINATOR'</span>
-    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">'*'</span> <span class="hljs-keyword">and</span> prev[<span class="hljs-number">0</span>] <span class="hljs-keyword">is</span> <span class="hljs-string">'EXPORT'</span>
+    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">'*'</span> <span class="hljs-keyword">and</span> prev?[<span class="hljs-number">0</span>] <span class="hljs-keyword">is</span> <span class="hljs-string">'EXPORT'</span>
       tag = <span class="hljs-string">'EXPORT_ALL'</span>
     <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">in</span> MATH            <span class="hljs-keyword">then</span> tag = <span class="hljs-string">'MATH'</span>
     <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">in</span> COMPARE         <span class="hljs-keyword">then</span> tag = <span class="hljs-string">'COMPARE'</span>
@@ -1289,11 +1290,12 @@ <h2 id="tokenizers">Tokenizers</h2>
     <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">in</span> UNARY_MATH      <span class="hljs-keyword">then</span> tag = <span class="hljs-string">'UNARY_MATH'</span>
     <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">in</span> SHIFT           <span class="hljs-keyword">then</span> tag = <span class="hljs-string">'SHIFT'</span>
     <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">'?'</span> <span class="hljs-keyword">and</span> prev?.spaced <span class="hljs-keyword">then</span> tag = <span class="hljs-string">'BIN?'</span>
-    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> prev <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> prev.spaced
-      <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">'('</span> <span class="hljs-keyword">and</span> prev[<span class="hljs-number">0</span>] <span class="hljs-keyword">in</span> CALLABLE
+    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> prev
+      <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">'('</span> <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> prev.spaced <span class="hljs-keyword">and</span> prev[<span class="hljs-number">0</span>] <span class="hljs-keyword">in</span> CALLABLE
         prev[<span class="hljs-number">0</span>] = <span class="hljs-string">'FUNC_EXIST'</span> <span class="hljs-keyword">if</span> prev[<span class="hljs-number">0</span>] <span class="hljs-keyword">is</span> <span class="hljs-string">'?'</span>
         tag = <span class="hljs-string">'CALL_START'</span>
-      <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">'['</span> <span class="hljs-keyword">and</span> prev[<span class="hljs-number">0</span>] <span class="hljs-keyword">in</span> INDEXABLE
+      <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> value <span class="hljs-keyword">is</span> <span class="hljs-string">'['</span> <span class="hljs-keyword">and</span> ((prev[<span class="hljs-number">0</span>] <span class="hljs-keyword">in</span> INDEXABLE <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> prev.spaced) <span class="hljs-keyword">or</span>
+         (prev[<span class="hljs-number">0</span>] <span class="hljs-keyword">is</span> <span class="hljs-string">'::'</span>)) <span class="hljs-comment"># `.prototype` can’t be a method you can call.</span>
         tag = <span class="hljs-string">'INDEX_START'</span>
         <span class="hljs-keyword">switch</span> prev[<span class="hljs-number">0</span>]
           <span class="hljs-keyword">when</span> <span class="hljs-string">'?'</span>  <span class="hljs-keyword">then</span> prev[<span class="hljs-number">0</span>] = <span class="hljs-string">'INDEX_SOAK'</span>
@@ -1590,7 +1592,8 @@ <h2 id="token-manipulators">Token Manipulators</h2>
     <span class="hljs-keyword">for</span> token, i <span class="hljs-keyword">in</span> tokens
       [tag, value] = token
       <span class="hljs-keyword">switch</span> tag
-        <span class="hljs-keyword">when</span> <span class="hljs-string">'TOKENS'</span></pre></div></div>
+        <span class="hljs-keyword">when</span> <span class="hljs-string">'TOKENS'</span>
+          <span class="hljs-keyword">if</span> value.length <span class="hljs-keyword">is</span> <span class="hljs-number">2</span></pre></div></div>
             
         </li>
         
@@ -1605,7 +1608,7 @@ <h2 id="token-manipulators">Token Manipulators</h2>
 
             </div>
             
-            <div class="content"><div class='highlight'><pre>          <span class="hljs-keyword">continue</span> <span class="hljs-keyword">if</span> value.length <span class="hljs-keyword">is</span> <span class="hljs-number">2</span></pre></div></div>
+            <div class="content"><div class='highlight'><pre>            <span class="hljs-keyword">continue</span> <span class="hljs-keyword">unless</span> value[<span class="hljs-number">0</span>].comments <span class="hljs-keyword">or</span> value[<span class="hljs-number">1</span>].comments</pre></div></div>
             
         </li>
         
@@ -1616,6 +1619,59 @@ <h2 id="token-manipulators">Token Manipulators</h2>
               <div class="pilwrap ">
                 <a class="pilcrow" href="#section-57">&#182;</a>
               </div>
+              <p>There are comments (and nothing else) in this interpolation.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>            <span class="hljs-keyword">if</span> @csxDepth <span class="hljs-keyword">is</span> <span class="hljs-number">0</span></pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-58">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-58">&#182;</a>
+              </div>
+              <p>This is an interpolated string, not a CSX tag; and for whatever
+reason <code>`a${/*test*/}b` </code> is invalid JS. So compile to
+<code>`a${/*test*/&#39;&#39;}b` </code> instead.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>              placeholderToken = @makeToken <span class="hljs-string">'STRING'</span>, <span class="hljs-string">"''"</span>
+            <span class="hljs-keyword">else</span>
+              placeholderToken = @makeToken <span class="hljs-string">'JS'</span>, <span class="hljs-string">''</span></pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-59">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-59">&#182;</a>
+              </div>
+              <p>Use the same location data as the first parenthesis.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>            placeholderToken[<span class="hljs-number">2</span>] = value[<span class="hljs-number">0</span>][<span class="hljs-number">2</span>]
+            <span class="hljs-keyword">for</span> val <span class="hljs-keyword">in</span> value <span class="hljs-keyword">when</span> val.comments
+              placeholderToken.comments ?= []
+              placeholderToken.comments.push val.comments...
+            value.splice <span class="hljs-number">1</span>, <span class="hljs-number">0</span>, placeholderToken</pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-60">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-60">&#182;</a>
+              </div>
               <p>Push all the tokens in the fake <code>&#39;TOKENS&#39;</code> token. These already have
 sane location data.</p>
 
@@ -1628,11 +1684,11 @@ <h2 id="token-manipulators">Token Manipulators</h2>
         </li>
         
         
-        <li id="section-58">
+        <li id="section-61">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-58">&#182;</a>
+                <a class="pilcrow" href="#section-61">&#182;</a>
               </div>
               <p>Convert <code>&#39;NEOSTRING&#39;</code> into <code>&#39;STRING&#39;</code>.</p>
 
@@ -1643,11 +1699,11 @@ <h2 id="token-manipulators">Token Manipulators</h2>
         </li>
         
         
-        <li id="section-59">
+        <li id="section-62">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-59">&#182;</a>
+                <a class="pilcrow" href="#section-62">&#182;</a>
               </div>
               <p>Optimize out empty strings. We ensure that the tokens stream always
 starts with a string token, though, to make sure that the result
@@ -1664,11 +1720,11 @@ <h2 id="token-manipulators">Token Manipulators</h2>
         </li>
         
         
-        <li id="section-60">
+        <li id="section-63">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-60">&#182;</a>
+                <a class="pilcrow" href="#section-63">&#182;</a>
               </div>
               <p>However, there is one case where we can optimize away a starting
 empty string.</p>
@@ -1686,11 +1742,11 @@ <h2 id="token-manipulators">Token Manipulators</h2>
         </li>
         
         
-        <li id="section-61">
+        <li id="section-64">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-61">&#182;</a>
+                <a class="pilcrow" href="#section-64">&#182;</a>
               </div>
               <p>Create a 0-length “+” token.</p>
 
@@ -1723,11 +1779,11 @@ <h2 id="token-manipulators">Token Manipulators</h2>
         </li>
         
         
-        <li id="section-62">
+        <li id="section-65">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-62">&#182;</a>
+                <a class="pilcrow" href="#section-65">&#182;</a>
               </div>
               <p>Pairs up a closing token, ensuring that all listed pairs of tokens are
 correctly balanced throughout the course of the token stream.</p>
@@ -1742,11 +1798,11 @@ <h2 id="token-manipulators">Token Manipulators</h2>
         </li>
         
         
-        <li id="section-63">
+        <li id="section-66">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-63">&#182;</a>
+                <a class="pilcrow" href="#section-66">&#182;</a>
               </div>
               <p>Auto-close <code>INDENT</code> to support syntax like this:</p>
 <pre><code>el.click(<span class="hljs-function"><span class="hljs-params">(event)</span> -&gt;</span>
@@ -1762,11 +1818,11 @@ <h2 id="token-manipulators">Token Manipulators</h2>
         </li>
         
         
-        <li id="section-64">
+        <li id="section-67">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-64">&#182;</a>
+                <a class="pilcrow" href="#section-67">&#182;</a>
               </div>
               <h2 id="helpers">Helpers</h2>
 
@@ -1775,11 +1831,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-65">
+        <li id="section-68">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-65">&#182;</a>
+                <a class="pilcrow" href="#section-68">&#182;</a>
               </div>
               
             </div>
@@ -1787,11 +1843,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-66">
+        <li id="section-69">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-66">&#182;</a>
+                <a class="pilcrow" href="#section-69">&#182;</a>
               </div>
               <p>Returns the line and column number from an offset into the current chunk.</p>
 <p><code>offset</code> is a number of characters into <code>@chunk</code>.</p>
@@ -1821,11 +1877,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-67">
+        <li id="section-70">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-67">&#182;</a>
+                <a class="pilcrow" href="#section-70">&#182;</a>
               </div>
               <p>Same as <code>token</code>, except this just returns the token without adding it
 to the results.</p>
@@ -1840,11 +1896,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-68">
+        <li id="section-71">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-68">&#182;</a>
+                <a class="pilcrow" href="#section-71">&#182;</a>
               </div>
               <p>Use length - 1 for the final offset - we’re supplying the last_line and the last_column,
 so if last_column == first_column, then we’re looking at a character of length 1.</p>
@@ -1862,11 +1918,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-69">
+        <li id="section-72">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-69">&#182;</a>
+                <a class="pilcrow" href="#section-72">&#182;</a>
               </div>
               <p>Add a token to the results.
 <code>offset</code> is the offset into the current <code>@chunk</code> where the token starts.
@@ -1885,11 +1941,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-70">
+        <li id="section-73">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-70">&#182;</a>
+                <a class="pilcrow" href="#section-73">&#182;</a>
               </div>
               <p>Peek at the last tag in the token stream.</p>
 
@@ -1902,11 +1958,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-71">
+        <li id="section-74">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-71">&#182;</a>
+                <a class="pilcrow" href="#section-74">&#182;</a>
               </div>
               <p>Peek at the last value in the token stream.</p>
 
@@ -1919,11 +1975,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-72">
+        <li id="section-75">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-72">&#182;</a>
+                <a class="pilcrow" href="#section-75">&#182;</a>
               </div>
               <p>Get the previous token in the token stream.</p>
 
@@ -1935,11 +1991,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-73">
+        <li id="section-76">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-73">&#182;</a>
+                <a class="pilcrow" href="#section-76">&#182;</a>
               </div>
               <p>Are we in the midst of an unfinished expression?</p>
 
@@ -1967,11 +2023,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-74">
+        <li id="section-77">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-74">&#182;</a>
+                <a class="pilcrow" href="#section-77">&#182;</a>
               </div>
               <p>surrogate pair</p>
 
@@ -1984,11 +2040,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-75">
+        <li id="section-78">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-75">&#182;</a>
+                <a class="pilcrow" href="#section-78">&#182;</a>
               </div>
               <p>Replace <code>\u{...}</code> with <code>\uxxxx[\uxxxx]</code> in regexes without <code>u</code> flag</p>
 
@@ -2011,11 +2067,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-76">
+        <li id="section-79">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-76">&#182;</a>
+                <a class="pilcrow" href="#section-79">&#182;</a>
               </div>
               <p>Validates escapes in strings and regexes.</p>
 
@@ -2043,11 +2099,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-77">
+        <li id="section-80">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-77">&#182;</a>
+                <a class="pilcrow" href="#section-80">&#182;</a>
               </div>
               <p>Constructs a string or regex by escaping certain characters.</p>
 
@@ -2067,11 +2123,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-78">
+        <li id="section-81">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-78">&#182;</a>
+                <a class="pilcrow" href="#section-81">&#182;</a>
               </div>
               <p>Ignore escaped backslashes.</p>
 
@@ -2085,16 +2141,21 @@ <h2 id="helpers">Helpers</h2>
       <span class="hljs-keyword">when</span> ls        <span class="hljs-keyword">then</span> <span class="hljs-string">'\\u2028'</span>
       <span class="hljs-keyword">when</span> ps        <span class="hljs-keyword">then</span> <span class="hljs-string">'\\u2029'</span>
       <span class="hljs-keyword">when</span> other     <span class="hljs-keyword">then</span> (<span class="hljs-keyword">if</span> options.double <span class="hljs-keyword">then</span> <span class="hljs-string">"\\<span class="hljs-subst">#{other}</span>"</span> <span class="hljs-keyword">else</span> other)
-    <span class="hljs-string">"<span class="hljs-subst">#{options.delimiter}</span><span class="hljs-subst">#{body}</span><span class="hljs-subst">#{options.delimiter}</span>"</span></pre></div></div>
+    <span class="hljs-string">"<span class="hljs-subst">#{options.delimiter}</span><span class="hljs-subst">#{body}</span><span class="hljs-subst">#{options.delimiter}</span>"</span>
+
+  suppressSemicolons: <span class="hljs-function">-&gt;</span>
+    <span class="hljs-keyword">while</span> @value() <span class="hljs-keyword">is</span> <span class="hljs-string">';'</span>
+      @tokens.pop()
+      @error <span class="hljs-string">'unexpected ;'</span> <span class="hljs-keyword">if</span> @prev()?[<span class="hljs-number">0</span>] <span class="hljs-keyword">in</span> [<span class="hljs-string">'='</span>, UNFINISHED...]</pre></div></div>
             
         </li>
         
         
-        <li id="section-79">
+        <li id="section-82">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-79">&#182;</a>
+                <a class="pilcrow" href="#section-82">&#182;</a>
               </div>
               <p>Throws an error at either a given offset from the current chunk or at the
 location of a token (<code>token[2]</code>).</p>
@@ -2113,11 +2174,11 @@ <h2 id="helpers">Helpers</h2>
         </li>
         
         
-        <li id="section-80">
+        <li id="section-83">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-80">&#182;</a>
+                <a class="pilcrow" href="#section-83">&#182;</a>
               </div>
               <h2 id="helper-functions">Helper functions</h2>
 
@@ -2126,11 +2187,11 @@ <h2 id="helper-functions">Helper functions</h2>
         </li>
         
         
-        <li id="section-81">
+        <li id="section-84">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-81">&#182;</a>
+                <a class="pilcrow" href="#section-84">&#182;</a>
               </div>
               
             </div>
@@ -2151,11 +2212,11 @@ <h2 id="helper-functions">Helper functions</h2>
         </li>
         
         
-        <li id="section-82">
+        <li id="section-85">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-82">&#182;</a>
+                <a class="pilcrow" href="#section-85">&#182;</a>
               </div>
               <p><code>from</code> isn’t a CoffeeScript keyword, but it behaves like one in <code>import</code> and
 <code>export</code> statements (handled above) and in the declaration line of a <code>for</code>
@@ -2170,11 +2231,11 @@ <h2 id="helper-functions">Helper functions</h2>
         </li>
         
         
-        <li id="section-83">
+        <li id="section-86">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-83">&#182;</a>
+                <a class="pilcrow" href="#section-86">&#182;</a>
               </div>
               <p><code>for i from from</code>, <code>for from from iterable</code></p>
 
@@ -2187,11 +2248,11 @@ <h2 id="helper-functions">Helper functions</h2>
         </li>
         
         
-        <li id="section-84">
+        <li id="section-87">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-84">&#182;</a>
+                <a class="pilcrow" href="#section-87">&#182;</a>
               </div>
               <p><code>for i from iterable</code></p>
 
@@ -2202,11 +2263,11 @@ <h2 id="helper-functions">Helper functions</h2>
         </li>
         
         
-        <li id="section-85">
+        <li id="section-88">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-85">&#182;</a>
+                <a class="pilcrow" href="#section-88">&#182;</a>
               </div>
               <p><code>for from…</code></p>
 
@@ -2218,11 +2279,11 @@ <h2 id="helper-functions">Helper functions</h2>
         </li>
         
         
-        <li id="section-86">
+        <li id="section-89">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-86">&#182;</a>
+                <a class="pilcrow" href="#section-89">&#182;</a>
               </div>
               <p><code>for {from}…</code>, <code>for [from]…</code>, <code>for {a, from}…</code>, <code>for {a: from}…</code></p>
 
@@ -2236,11 +2297,11 @@ <h2 id="helper-functions">Helper functions</h2>
         </li>
         
         
-        <li id="section-87">
+        <li id="section-90">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-87">&#182;</a>
+                <a class="pilcrow" href="#section-90">&#182;</a>
               </div>
               <h2 id="constants">Constants</h2>
 
@@ -2249,11 +2310,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-88">
+        <li id="section-91">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-88">&#182;</a>
+                <a class="pilcrow" href="#section-91">&#182;</a>
               </div>
               
             </div>
@@ -2261,11 +2322,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-89">
+        <li id="section-92">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-89">&#182;</a>
+                <a class="pilcrow" href="#section-92">&#182;</a>
               </div>
               <p>Keywords that CoffeeScript shares in common with JavaScript.</p>
 
@@ -2283,11 +2344,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-90">
+        <li id="section-93">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-90">&#182;</a>
+                <a class="pilcrow" href="#section-93">&#182;</a>
               </div>
               <p>CoffeeScript-only keywords.</p>
 
@@ -2315,11 +2376,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-91">
+        <li id="section-94">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-91">&#182;</a>
+                <a class="pilcrow" href="#section-94">&#182;</a>
               </div>
               <p>The list of keywords that are reserved by JavaScript, but not used, or are
 used by CoffeeScript internally. We throw an error when these are encountered,
@@ -2338,11 +2399,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-92">
+        <li id="section-95">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-92">&#182;</a>
+                <a class="pilcrow" href="#section-95">&#182;</a>
               </div>
               <p>The superset of both JavaScript keywords and reserved words, none of which may
 be used as identifiers or properties.</p>
@@ -2354,11 +2415,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-93">
+        <li id="section-96">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-93">&#182;</a>
+                <a class="pilcrow" href="#section-96">&#182;</a>
               </div>
               <p>The character code of the nasty Microsoft madness otherwise known as the BOM.</p>
 
@@ -2369,11 +2430,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-94">
+        <li id="section-97">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-94">&#182;</a>
+                <a class="pilcrow" href="#section-97">&#182;</a>
               </div>
               <p>Token matching regexes.</p>
 
@@ -2427,11 +2488,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-95">
+        <li id="section-98">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-95">&#182;</a>
+                <a class="pilcrow" href="#section-98">&#182;</a>
               </div>
               <p>String-matching-regexes.</p>
 
@@ -2465,11 +2526,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-96">
+        <li id="section-99">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-96">&#182;</a>
+                <a class="pilcrow" href="#section-99">&#182;</a>
               </div>
               <p>Regex-matching-regexes.</p>
 
@@ -2503,11 +2564,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-97">
+        <li id="section-100">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-97">&#182;</a>
+                <a class="pilcrow" href="#section-100">&#182;</a>
               </div>
               <p>Other regexes.</p>
 
@@ -2550,11 +2611,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-98">
+        <li id="section-101">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-98">&#182;</a>
+                <a class="pilcrow" href="#section-101">&#182;</a>
               </div>
               <p>Compound assignment tokens.</p>
 
@@ -2568,11 +2629,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-99">
+        <li id="section-102">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-99">&#182;</a>
+                <a class="pilcrow" href="#section-102">&#182;</a>
               </div>
               <p>Unary tokens.</p>
 
@@ -2585,11 +2646,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-100">
+        <li id="section-103">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-100">&#182;</a>
+                <a class="pilcrow" href="#section-103">&#182;</a>
               </div>
               <p>Bit-shifting tokens.</p>
 
@@ -2600,11 +2661,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-101">
+        <li id="section-104">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-101">&#182;</a>
+                <a class="pilcrow" href="#section-104">&#182;</a>
               </div>
               <p>Comparison tokens.</p>
 
@@ -2615,11 +2676,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-102">
+        <li id="section-105">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-102">&#182;</a>
+                <a class="pilcrow" href="#section-105">&#182;</a>
               </div>
               <p>Mathematical tokens.</p>
 
@@ -2630,11 +2691,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-103">
+        <li id="section-106">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-103">&#182;</a>
+                <a class="pilcrow" href="#section-106">&#182;</a>
               </div>
               <p>Relational tokens that are negatable with <code>not</code> prefix.</p>
 
@@ -2645,11 +2706,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-104">
+        <li id="section-107">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-104">&#182;</a>
+                <a class="pilcrow" href="#section-107">&#182;</a>
               </div>
               <p>Boolean tokens.</p>
 
@@ -2660,11 +2721,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-105">
+        <li id="section-108">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-105">&#182;</a>
+                <a class="pilcrow" href="#section-108">&#182;</a>
               </div>
               <p>Tokens which could legitimately be invoked or indexed. An opening
 parentheses or bracket following these tokens will be recorded as the start
@@ -2681,11 +2742,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-106">
+        <li id="section-109">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-106">&#182;</a>
+                <a class="pilcrow" href="#section-109">&#182;</a>
               </div>
               <p>Tokens which can be the left-hand side of a less-than comparison, i.e. <code>a&lt;b</code>.</p>
 
@@ -2696,11 +2757,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-107">
+        <li id="section-110">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-107">&#182;</a>
+                <a class="pilcrow" href="#section-110">&#182;</a>
               </div>
               <p>Tokens which a regular expression will never immediately follow (except spaced
 CALLABLEs in some cases), but which a division operator can.</p>
@@ -2713,11 +2774,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-108">
+        <li id="section-111">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-108">&#182;</a>
+                <a class="pilcrow" href="#section-111">&#182;</a>
               </div>
               <p>Tokens that, when immediately preceding a <code>WHEN</code>, indicate that the <code>WHEN</code>
 occurs at the start of a line. We disambiguate these from trailing whens to
@@ -2730,11 +2791,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-109">
+        <li id="section-112">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-109">&#182;</a>
+                <a class="pilcrow" href="#section-112">&#182;</a>
               </div>
               <p>Additional indent in front of these is ignored.</p>
 
@@ -2745,11 +2806,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-110">
+        <li id="section-113">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-110">&#182;</a>
+                <a class="pilcrow" href="#section-113">&#182;</a>
               </div>
               <p>Tokens that, when appearing at the end of a line, suppress a following TERMINATOR/INDENT token</p>
 
diff --git a/docs/v2/annotated-source/nodes.html b/docs/v2/annotated-source/nodes.html
index 41d7f4fb89..a05718769f 100644
--- a/docs/v2/annotated-source/nodes.html
+++ b/docs/v2/annotated-source/nodes.html
@@ -356,7 +356,10 @@ <h3 id="base">Base</h3>
     <span class="hljs-keyword">else</span>
       node.compileClosure o
     @compileCommentFragments o, node, fragments
-    fragments</pre></div></div>
+    fragments
+
+  compileToFragmentsWithoutComments: <span class="hljs-function"><span class="hljs-params">(o, lvl)</span> -&gt;</span>
+    @compileWithoutComments o, lvl, <span class="hljs-string">'compileToFragments'</span></pre></div></div>
             
         </li>
         
@@ -1715,15 +1718,13 @@ <h3 id="literal">Literal</h3>
 
 exports.StringLiteral = <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">StringLiteral</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Literal</span></span>
   compileNode: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
-    res = <span class="hljs-keyword">if</span> @csx <span class="hljs-keyword">then</span> [@makeCode @unquote <span class="hljs-literal">yes</span>] <span class="hljs-keyword">else</span> <span class="hljs-keyword">super</span>()
+    res = <span class="hljs-keyword">if</span> @csx <span class="hljs-keyword">then</span> [@makeCode @unquote(<span class="hljs-literal">yes</span>, <span class="hljs-literal">yes</span>)] <span class="hljs-keyword">else</span> <span class="hljs-keyword">super</span>()
 
-  unquote: <span class="hljs-function"><span class="hljs-params">(literal)</span> -&gt;</span>
+  unquote: <span class="hljs-function"><span class="hljs-params">(doubleQuote = <span class="hljs-literal">no</span>, newLine = <span class="hljs-literal">no</span>)</span> -&gt;</span>
     unquoted = @value[<span class="hljs-number">1.</span>..<span class="hljs-number">-1</span>]
-    <span class="hljs-keyword">if</span> literal
-      unquoted.replace <span class="hljs-regexp">/\\n/g</span>, <span class="hljs-string">'\n'</span>
-      .replace <span class="hljs-regexp">/\\"/g</span>, <span class="hljs-string">'"'</span>
-    <span class="hljs-keyword">else</span>
-      unquoted
+    unquoted = unquoted.replace <span class="hljs-regexp">/\\"/g</span>, <span class="hljs-string">'"'</span>  <span class="hljs-keyword">if</span> doubleQuote
+    unquoted = unquoted.replace <span class="hljs-regexp">/\\n/g</span>, <span class="hljs-string">'\n'</span> <span class="hljs-keyword">if</span> newLine
+    unquoted
 
 exports.RegexLiteral = <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">RegexLiteral</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Literal</span></span>
 
@@ -3288,7 +3289,8 @@ <h3 id="obj">Obj</h3>
         propSlices.push prop
     addSlice()
     slices.unshift <span class="hljs-keyword">new</span> Obj <span class="hljs-keyword">unless</span> slices[<span class="hljs-number">0</span>] <span class="hljs-keyword">instanceof</span> Obj
-    (<span class="hljs-keyword">new</span> Call <span class="hljs-keyword">new</span> Literal(<span class="hljs-string">'Object.assign'</span>), slices).compileToFragments o
+    _extends = <span class="hljs-keyword">new</span> Value <span class="hljs-keyword">new</span> Literal utility <span class="hljs-string">'_extends'</span>, o
+    (<span class="hljs-keyword">new</span> Call _extends, slices).compileToFragments o
 
   compileCSXAttributes: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
     props = @properties
@@ -4209,8 +4211,9 @@ <h3 id="assign">Assign</h3>
 
             </div>
             
-            <div class="content"><div class='highlight'><pre>        <span class="hljs-keyword">return</span> @compileObjectDestruct(o) <span class="hljs-keyword">if</span> @variable.isObject() <span class="hljs-keyword">and</span> @variable.contains (node) -&gt;
+            <div class="content"><div class='highlight'><pre>        objDestructAnswer = @compileObjectDestruct(o) <span class="hljs-keyword">if</span> @variable.isObject() <span class="hljs-keyword">and</span> @variable.contains (node) -&gt;
           node <span class="hljs-keyword">instanceof</span> Obj <span class="hljs-keyword">and</span> node.hasSplat()
+        <span class="hljs-keyword">return</span> objDestructAnswer <span class="hljs-keyword">if</span> objDestructAnswer
 
       <span class="hljs-keyword">return</span> @compileSplice       o <span class="hljs-keyword">if</span> @variable.isSplice()
       <span class="hljs-keyword">return</span> @compileConditional  o <span class="hljs-keyword">if</span> @context <span class="hljs-keyword">in</span> [<span class="hljs-string">'||='</span>, <span class="hljs-string">'&amp;&amp;='</span>, <span class="hljs-string">'?='</span>]
@@ -4389,8 +4392,10 @@ <h3 id="assign">Assign</h3>
             <div class="content"><div class='highlight'><pre><span class="hljs-function">    <span class="hljs-title">traverseRest</span> = <span class="hljs-params">(properties, source)</span> =&gt;</span>
       restElements = []
       restIndex = <span class="hljs-literal">undefined</span>
+      source = <span class="hljs-keyword">new</span> Value source <span class="hljs-keyword">unless</span> source.properties?
 
       <span class="hljs-keyword">for</span> prop, index <span class="hljs-keyword">in</span> properties
+        nestedSourceDefault = nestedSource = nestedProperties = <span class="hljs-literal">null</span>
         setScopeVar prop.unwrap()
         <span class="hljs-keyword">if</span> prop <span class="hljs-keyword">instanceof</span> Assign</pre></div></div>
             
@@ -4418,6 +4423,21 @@ <h3 id="assign">Assign</h3>
               <div class="pilwrap ">
                 <a class="pilcrow" href="#section-173">&#182;</a>
               </div>
+              <p>prop is <code>k = {...}</code></p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>            <span class="hljs-keyword">continue</span> <span class="hljs-keyword">unless</span> prop.context <span class="hljs-keyword">is</span> <span class="hljs-string">'object'</span></pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-174">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-174">&#182;</a>
+              </div>
               <p>prop is <code>k: {...}</code></p>
 
             </div>
@@ -4428,11 +4448,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-174">
+        <li id="section-175">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-174">&#182;</a>
+                <a class="pilcrow" href="#section-175">&#182;</a>
               </div>
               <p>prop is <code>k: {...} = default</code></p>
 
@@ -4458,11 +4478,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-175">
+        <li id="section-176">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-175">&#182;</a>
+                <a class="pilcrow" href="#section-176">&#182;</a>
               </div>
               <p>Remove rest element from the properties after iteration</p>
 
@@ -4475,34 +4495,40 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-176">
+        <li id="section-177">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-176">&#182;</a>
+                <a class="pilcrow" href="#section-177">&#182;</a>
               </div>
-              <p>Cache the value for reuse with rest elements</p>
+              <p>Cache the value for reuse with rest elements.</p>
 
             </div>
             
-            <div class="content"><div class='highlight'><pre>    [@value, valueRef] = @value.cache o</pre></div></div>
+            <div class="content"><div class='highlight'><pre>    <span class="hljs-keyword">if</span> @value.shouldCache()
+      valueRefTemp = <span class="hljs-keyword">new</span> IdentifierLiteral o.scope.freeVariable <span class="hljs-string">'ref'</span>, reserve: <span class="hljs-literal">false</span>
+    <span class="hljs-keyword">else</span>
+      valueRefTemp = @value.base</pre></div></div>
             
         </li>
         
         
-        <li id="section-177">
+        <li id="section-178">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-177">&#182;</a>
+                <a class="pilcrow" href="#section-178">&#182;</a>
               </div>
               <p>Find all rest elements.</p>
 
             </div>
             
-            <div class="content"><div class='highlight'><pre>    restElements = traverseRest @variable.base.properties, valueRef
+            <div class="content"><div class='highlight'><pre>    restElements = traverseRest @variable.base.properties, valueRefTemp
+    <span class="hljs-keyword">return</span> <span class="hljs-literal">no</span> <span class="hljs-keyword">unless</span> restElements <span class="hljs-keyword">and</span> restElements.length &gt; <span class="hljs-number">0</span>
 
+    [@value, valueRef] = @value.cache o
     result = <span class="hljs-keyword">new</span> Block [@]
+
     <span class="hljs-keyword">for</span> restElement <span class="hljs-keyword">in</span> restElements
       value = <span class="hljs-keyword">new</span> Call <span class="hljs-keyword">new</span> Value(<span class="hljs-keyword">new</span> Literal utility <span class="hljs-string">'objectWithoutKeys'</span>, o), [restElement.source, restElement.excludeProps]
       result.push <span class="hljs-keyword">new</span> Assign restElement.name, value
@@ -4513,11 +4539,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-178">
+        <li id="section-179">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-178">&#182;</a>
+                <a class="pilcrow" href="#section-179">&#182;</a>
               </div>
               <p>Remove leading tab and trailing semicolon</p>
 
@@ -4531,11 +4557,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-179">
+        <li id="section-180">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-179">&#182;</a>
+                <a class="pilcrow" href="#section-180">&#182;</a>
               </div>
               <p>Brief implementation of recursive pattern matching, when assigning array or
 object literals to a value. Peeks at their properties to assign inner names.</p>
@@ -4551,11 +4577,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-180">
+        <li id="section-181">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-180">&#182;</a>
+                <a class="pilcrow" href="#section-181">&#182;</a>
               </div>
               <p>Special-case for <code>{} = a</code> and <code>[] = a</code> (empty patterns).
 Compile to simply <code>a</code>.</p>
@@ -4570,11 +4596,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-181">
+        <li id="section-182">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-181">&#182;</a>
+                <a class="pilcrow" href="#section-182">&#182;</a>
               </div>
               <p>Disallow <code>[...] = a</code> for some reason. (Could be equivalent to <code>[] = a</code>?)</p>
 
@@ -4588,11 +4614,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-182">
+        <li id="section-183">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-182">&#182;</a>
+                <a class="pilcrow" href="#section-183">&#182;</a>
               </div>
               <p>Special case for when there’s only one thing destructured off of
 something. <code>{a} = b</code>, <code>[a] = b</code>, <code>{a: b} = c</code></p>
@@ -4604,11 +4630,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-183">
+        <li id="section-184">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-183">&#182;</a>
+                <a class="pilcrow" href="#section-184">&#182;</a>
               </div>
               <p>Pick the property straight off the value when there’s just one to pick
 (no need to cache the value into a variable).</p>
@@ -4621,11 +4647,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-184">
+        <li id="section-185">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-184">&#182;</a>
+                <a class="pilcrow" href="#section-185">&#182;</a>
               </div>
               <p>A regular object pattern-match.</p>
 
@@ -4644,11 +4670,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-185">
+        <li id="section-186">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-185">&#182;</a>
+                <a class="pilcrow" href="#section-186">&#182;</a>
               </div>
               <p>A shorthand <code>{a, b, @c} = val</code> pattern-match.</p>
 
@@ -4663,11 +4689,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-186">
+        <li id="section-187">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-186">&#182;</a>
+                <a class="pilcrow" href="#section-187">&#182;</a>
               </div>
               <p>A regular array pattern-match.</p>
 
@@ -4692,11 +4718,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-187">
+        <li id="section-188">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-187">&#182;</a>
+                <a class="pilcrow" href="#section-188">&#182;</a>
               </div>
               <p>At this point, there are several things to destructure. So the <code>fn()</code> in
 <code>{a, b} = fn()</code> must be cached, for example. Make vvar into a simple
@@ -4713,11 +4739,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-188">
+        <li id="section-189">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-188">&#182;</a>
+                <a class="pilcrow" href="#section-189">&#182;</a>
               </div>
               <p>And here comes the big loop that handles all of these cases:
 <code>[a, b] = c</code>
@@ -4766,11 +4792,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-189">
+        <li id="section-190">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-189">&#182;</a>
+                <a class="pilcrow" href="#section-190">&#182;</a>
               </div>
               <p>A regular object pattern-match.</p>
 
@@ -4789,11 +4815,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-190">
+        <li id="section-191">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-190">&#182;</a>
+                <a class="pilcrow" href="#section-191">&#182;</a>
               </div>
               <p>A shorthand <code>{a, b, @c} = val</code> pattern-match.</p>
 
@@ -4808,11 +4834,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-191">
+        <li id="section-192">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-191">&#182;</a>
+                <a class="pilcrow" href="#section-192">&#182;</a>
               </div>
               <p>A regular array pattern-match.</p>
 
@@ -4837,11 +4863,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-192">
+        <li id="section-193">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-192">&#182;</a>
+                <a class="pilcrow" href="#section-193">&#182;</a>
               </div>
               <p>When compiling a conditional assignment, take care to ensure that the
 operands are only evaluated once, even though we have to reference them
@@ -4855,11 +4881,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-193">
+        <li id="section-194">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-193">&#182;</a>
+                <a class="pilcrow" href="#section-194">&#182;</a>
               </div>
               <p>Disallow conditional assignment of undefined variables.</p>
 
@@ -4878,11 +4904,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-194">
+        <li id="section-195">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-194">&#182;</a>
+                <a class="pilcrow" href="#section-195">&#182;</a>
               </div>
               <p>Convert special math assignment operators like <code>a **= b</code> to the equivalent
 extended form <code>a = a ** b</code> and then compiles that.</p>
@@ -4896,11 +4922,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-195">
+        <li id="section-196">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-195">&#182;</a>
+                <a class="pilcrow" href="#section-196">&#182;</a>
               </div>
               <p>Compile the assignment from an array splice literal, using JavaScript’s
 <code>Array#splice</code> method.</p>
@@ -4937,11 +4963,11 @@ <h3 id="assign">Assign</h3>
         </li>
         
         
-        <li id="section-196">
+        <li id="section-197">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-196">&#182;</a>
+                <a class="pilcrow" href="#section-197">&#182;</a>
               </div>
               <h3 id="funcglyph">FuncGlyph</h3>
 
@@ -4955,11 +4981,11 @@ <h3 id="funcglyph">FuncGlyph</h3>
         </li>
         
         
-        <li id="section-197">
+        <li id="section-198">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-197">&#182;</a>
+                <a class="pilcrow" href="#section-198">&#182;</a>
               </div>
               <h3 id="code">Code</h3>
 
@@ -4968,11 +4994,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-198">
+        <li id="section-199">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-198">&#182;</a>
+                <a class="pilcrow" href="#section-199">&#182;</a>
               </div>
               <p>A function definition. This is the only node that creates a new Scope.
 When for the purposes of walking the contents of a function body, the Code
@@ -5010,11 +5036,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-199">
+        <li id="section-200">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-199">&#182;</a>
+                <a class="pilcrow" href="#section-200">&#182;</a>
               </div>
               <p>Compilation creates a new scope unless explicitly asked to share with the
 outer scope. Handles splat parameters in the parameter list by setting
@@ -5049,11 +5075,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-200">
+        <li id="section-201">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-200">&#182;</a>
+                <a class="pilcrow" href="#section-201">&#182;</a>
               </div>
               <p>Check for duplicate parameters and separate <code>this</code> assignments.</p>
 
@@ -5073,11 +5099,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-201">
+        <li id="section-202">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-201">&#182;</a>
+                <a class="pilcrow" href="#section-202">&#182;</a>
               </div>
               <p>Parse the parameters, adding them to the list of parameters to put in the
 function definition; and dealing with splats or expansions, including
@@ -5095,11 +5121,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-202">
+        <li id="section-203">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-202">&#182;</a>
+                <a class="pilcrow" href="#section-203">&#182;</a>
               </div>
               <p>Was <code>...</code> used with this parameter? (Only one such parameter is allowed
 per function.) Splat/expansion parameters cannot have default values,
@@ -5119,11 +5145,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-203">
+        <li id="section-204">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-203">&#182;</a>
+                <a class="pilcrow" href="#section-204">&#182;</a>
               </div>
               <p>Splat arrays are treated oddly by ES; deal with them the legacy
 way in the function body. TODO: Should this be handled in the
@@ -5148,11 +5174,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-204">
+        <li id="section-205">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-204">&#182;</a>
+                <a class="pilcrow" href="#section-205">&#182;</a>
               </div>
               <p>Parse all other parameters; if a splat paramater has not yet been
 encountered, add these other parameters to the list to be output in
@@ -5168,11 +5194,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-205">
+        <li id="section-206">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-205">&#182;</a>
+                <a class="pilcrow" href="#section-206">&#182;</a>
               </div>
               <p>This parameter cannot be declared or assigned in the parameter
 list. So put a reference in the parameter list and add a statement
@@ -5191,11 +5217,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-206">
+        <li id="section-207">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-206">&#182;</a>
+                <a class="pilcrow" href="#section-207">&#182;</a>
               </div>
               <p>If this parameter comes before the splat or expansion, it will go
 in the function definition parameter list.</p>
@@ -5207,11 +5233,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-207">
+        <li id="section-208">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-207">&#182;</a>
+                <a class="pilcrow" href="#section-208">&#182;</a>
               </div>
               <p>If this parameter has a default value, and it hasn’t already been
 set by the <code>shouldCache()</code> block above, define it as a statement in
@@ -5231,11 +5257,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-208">
+        <li id="section-209">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-208">&#182;</a>
+                <a class="pilcrow" href="#section-209">&#182;</a>
               </div>
               <p>Add this parameter’s reference(s) to the function scope.</p>
 
@@ -5246,11 +5272,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-209">
+        <li id="section-210">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-209">&#182;</a>
+                <a class="pilcrow" href="#section-210">&#182;</a>
               </div>
               <p>This parameter is destructured.</p>
 
@@ -5263,11 +5289,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-210">
+        <li id="section-211">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-210">&#182;</a>
+                <a class="pilcrow" href="#section-211">&#182;</a>
               </div>
               <p>Compile <code>foo({a, b...}) -&gt;</code> to <code>foo(arg) -&gt; {a, b...} = arg</code>.
 Can be removed once ES proposal hits Stage 4.</p>
@@ -5283,11 +5309,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-211">
+        <li id="section-212">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-211">&#182;</a>
+                <a class="pilcrow" href="#section-212">&#182;</a>
               </div>
               <p>Compile <code>foo({a, b...} = {}) -&gt;</code> to <code>foo(arg = {}) -&gt; {a, b...} = arg</code>.</p>
 
@@ -5300,11 +5326,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-212">
+        <li id="section-213">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-212">&#182;</a>
+                <a class="pilcrow" href="#section-213">&#182;</a>
               </div>
               <p>This compilation of the parameter is only to get its name to add
 to the scope name tracking; since the compilation output here
@@ -5315,11 +5341,7 @@ <h3 id="code">Code</h3>
             </div>
             
             <div class="content"><div class='highlight'><pre>            paramToAddToScope = <span class="hljs-keyword">if</span> param.value? <span class="hljs-keyword">then</span> param <span class="hljs-keyword">else</span> ref
-            <span class="hljs-keyword">if</span> paramToAddToScope.name?.comments
-              salvagedComments = paramToAddToScope.name.comments
-              <span class="hljs-keyword">delete</span> paramToAddToScope.name.comments
-            o.scope.parameter fragmentsToText paramToAddToScope.compileToFragments o
-            paramToAddToScope.name.comments = salvagedComments <span class="hljs-keyword">if</span> salvagedComments
+            o.scope.parameter fragmentsToText paramToAddToScope.compileToFragmentsWithoutComments o
           params.push ref
         <span class="hljs-keyword">else</span>
           paramsAfterSplat.push param</pre></div></div>
@@ -5327,11 +5349,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-213">
+        <li id="section-214">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-213">&#182;</a>
+                <a class="pilcrow" href="#section-214">&#182;</a>
               </div>
               <p>If this parameter had a default value, since it’s no longer in the
 function parameter list we need to assign its default value
@@ -5347,11 +5369,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-214">
+        <li id="section-215">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-214">&#182;</a>
+                <a class="pilcrow" href="#section-215">&#182;</a>
               </div>
               <p>Add this parameter to the scope, since it wouldn’t have been added
 yet since it was skipped earlier.</p>
@@ -5363,11 +5385,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-215">
+        <li id="section-216">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-215">&#182;</a>
+                <a class="pilcrow" href="#section-216">&#182;</a>
               </div>
               <p>If there were parameters after the splat or expansion parameter, those
 parameters need to be assigned in the body of the function.</p>
@@ -5379,11 +5401,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-216">
+        <li id="section-217">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-216">&#182;</a>
+                <a class="pilcrow" href="#section-217">&#182;</a>
               </div>
               <p>Create a destructured assignment, e.g. <code>[a, b, c] = [args..., b, c]</code></p>
 
@@ -5396,11 +5418,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-217">
+        <li id="section-218">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-217">&#182;</a>
+                <a class="pilcrow" href="#section-218">&#182;</a>
               </div>
               <p>Add new expressions to the function body</p>
 
@@ -5417,11 +5439,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-218">
+        <li id="section-219">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-218">&#182;</a>
+                <a class="pilcrow" href="#section-219">&#182;</a>
               </div>
               <p>Assemble the output</p>
 
@@ -5438,18 +5460,38 @@ <h3 id="code">Code</h3>
     signature = [@makeCode <span class="hljs-string">'('</span>]
     <span class="hljs-keyword">for</span> param, i <span class="hljs-keyword">in</span> params
       signature.push @makeCode <span class="hljs-string">', '</span> <span class="hljs-keyword">if</span> i <span class="hljs-keyword">isnt</span> <span class="hljs-number">0</span>
-      signature.push @makeCode <span class="hljs-string">'...'</span> <span class="hljs-keyword">if</span> haveSplatParam <span class="hljs-keyword">and</span> i <span class="hljs-keyword">is</span> params.length - <span class="hljs-number">1</span>
+      signature.push @makeCode <span class="hljs-string">'...'</span> <span class="hljs-keyword">if</span> haveSplatParam <span class="hljs-keyword">and</span> i <span class="hljs-keyword">is</span> params.length - <span class="hljs-number">1</span></pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-220">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-220">&#182;</a>
+              </div>
+              <p>Compile this parameter, but if any generated variables get created
+(e.g. <code>ref</code>), shift those into the parent scope since we can’t put a
+<code>var</code> line inside a function parameter list.</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>      scopeVariablesCount = o.scope.variables.length
       signature.push param.compileToFragments(o)...
+      <span class="hljs-keyword">if</span> scopeVariablesCount <span class="hljs-keyword">isnt</span> o.scope.variables.length
+        generatedVariables = o.scope.variables.splice scopeVariablesCount
+        o.scope.parent.variables.push generatedVariables...
     signature.push @makeCode <span class="hljs-string">')'</span></pre></div></div>
             
         </li>
         
         
-        <li id="section-219">
+        <li id="section-221">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-219">&#182;</a>
+                <a class="pilcrow" href="#section-221">&#182;</a>
               </div>
               <p>Block comments between <code>)</code> and <code>-&gt;</code>/<code>=&gt;</code> get output between <code>)</code> and <code>{</code>.</p>
 
@@ -5464,11 +5506,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-220">
+        <li id="section-222">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-220">&#182;</a>
+                <a class="pilcrow" href="#section-222">&#182;</a>
               </div>
               <p>We need to compile the body before method names to ensure <code>super</code>
 references are handled.</p>
@@ -5499,11 +5541,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-221">
+        <li id="section-223">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-221">&#182;</a>
+                <a class="pilcrow" href="#section-223">&#182;</a>
               </div>
               <p>Short-circuit <code>traverseChildren</code> method to prevent it from crossing scope
 boundaries unless <code>crossScope</code> is <code>true</code>.</p>
@@ -5516,11 +5558,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-222">
+        <li id="section-224">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-222">&#182;</a>
+                <a class="pilcrow" href="#section-224">&#182;</a>
               </div>
               <p>Short-circuit <code>replaceInContext</code> method to prevent it from crossing context boundaries. Bound
 functions have the same context.</p>
@@ -5553,11 +5595,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-223">
+        <li id="section-225">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-223">&#182;</a>
+                <a class="pilcrow" href="#section-225">&#182;</a>
               </div>
               <p>Find all super calls in the given context node
 Returns <code>true</code> if <code>iterator</code> is called</p>
@@ -5577,11 +5619,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-224">
+        <li id="section-226">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-224">&#182;</a>
+                <a class="pilcrow" href="#section-226">&#182;</a>
               </div>
               <p><code>super</code> has the same target in bound (arrow) functions, so check them too</p>
 
@@ -5594,11 +5636,11 @@ <h3 id="code">Code</h3>
         </li>
         
         
-        <li id="section-225">
+        <li id="section-227">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-225">&#182;</a>
+                <a class="pilcrow" href="#section-227">&#182;</a>
               </div>
               <h3 id="param">Param</h3>
 
@@ -5607,11 +5649,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-226">
+        <li id="section-228">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-226">&#182;</a>
+                <a class="pilcrow" href="#section-228">&#182;</a>
               </div>
               <p>A parameter in a function definition. Beyond a typical JavaScript parameter,
 these parameters can also attach themselves to the context of the function,
@@ -5634,6 +5676,9 @@ <h3 id="param">Param</h3>
   compileToFragments: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
     @name.compileToFragments o, LEVEL_LIST
 
+  compileToFragmentsWithoutComments: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
+    @name.compileToFragmentsWithoutComments o, LEVEL_LIST
+
   asReference: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
     <span class="hljs-keyword">return</span> @reference <span class="hljs-keyword">if</span> @reference
     node = @name
@@ -5653,11 +5698,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-227">
+        <li id="section-229">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-227">&#182;</a>
+                <a class="pilcrow" href="#section-229">&#182;</a>
               </div>
               <p>Iterates the name or names of a <code>Param</code>.
 In a sense, a destructured parameter represents multiple JS parameters. This
@@ -5674,11 +5719,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-228">
+        <li id="section-230">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-228">&#182;</a>
+                <a class="pilcrow" href="#section-230">&#182;</a>
               </div>
               <ul>
 <li>simple literals <code>foo</code></li>
@@ -5691,11 +5736,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-229">
+        <li id="section-231">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-229">&#182;</a>
+                <a class="pilcrow" href="#section-231">&#182;</a>
               </div>
               <ul>
 <li>at-params <code>@foo</code></li>
@@ -5709,11 +5754,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-230">
+        <li id="section-232">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-230">&#182;</a>
+                <a class="pilcrow" href="#section-232">&#182;</a>
               </div>
               <ul>
 <li>destructured parameter with default value</li>
@@ -5727,11 +5772,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-231">
+        <li id="section-233">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-231">&#182;</a>
+                <a class="pilcrow" href="#section-233">&#182;</a>
               </div>
               <ul>
 <li>assignments within destructured parameters <code>{foo:bar}</code></li>
@@ -5744,11 +5789,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-232">
+        <li id="section-234">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-232">&#182;</a>
+                <a class="pilcrow" href="#section-234">&#182;</a>
               </div>
               <p>… possibly with a default value</p>
 
@@ -5763,11 +5808,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-233">
+        <li id="section-235">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-233">&#182;</a>
+                <a class="pilcrow" href="#section-235">&#182;</a>
               </div>
               <ul>
 <li>splats within destructured parameters <code>[xs...]</code></li>
@@ -5783,11 +5828,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-234">
+        <li id="section-236">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-234">&#182;</a>
+                <a class="pilcrow" href="#section-236">&#182;</a>
               </div>
               <ul>
 <li>destructured parameters within destructured parameters <code>[{a}]</code></li>
@@ -5801,11 +5846,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-235">
+        <li id="section-237">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-235">&#182;</a>
+                <a class="pilcrow" href="#section-237">&#182;</a>
               </div>
               <ul>
 <li>at-params within destructured parameters <code>{@foo}</code></li>
@@ -5819,11 +5864,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-236">
+        <li id="section-238">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-236">&#182;</a>
+                <a class="pilcrow" href="#section-238">&#182;</a>
               </div>
               <ul>
 <li>simple destructured parameters {foo}</li>
@@ -5839,11 +5884,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-237">
+        <li id="section-239">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-237">&#182;</a>
+                <a class="pilcrow" href="#section-239">&#182;</a>
               </div>
               <p>Rename a param by replacing the given AST node for a name with a new node.
 This needs to ensure that the the source for object destructuring does not change.</p>
@@ -5865,11 +5910,11 @@ <h3 id="param">Param</h3>
         </li>
         
         
-        <li id="section-238">
+        <li id="section-240">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-238">&#182;</a>
+                <a class="pilcrow" href="#section-240">&#182;</a>
               </div>
               <h3 id="splat">Splat</h3>
 
@@ -5878,11 +5923,11 @@ <h3 id="splat">Splat</h3>
         </li>
         
         
-        <li id="section-239">
+        <li id="section-241">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-239">&#182;</a>
+                <a class="pilcrow" href="#section-241">&#182;</a>
               </div>
               <p>A splat, either as a parameter to a function, an argument to a call,
 or as part of a destructuring assignment.</p>
@@ -5890,33 +5935,31 @@ <h3 id="splat">Splat</h3>
             </div>
             
             <div class="content"><div class='highlight'><pre>exports.Splat = <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Splat</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Base</span></span>
+  constructor: <span class="hljs-function"><span class="hljs-params">(name)</span> -&gt;</span>
+    <span class="hljs-keyword">super</span>()
+    @name = <span class="hljs-keyword">if</span> name.compile <span class="hljs-keyword">then</span> name <span class="hljs-keyword">else</span> <span class="hljs-keyword">new</span> Literal name
 
   children: [<span class="hljs-string">'name'</span>]
 
   isAssignable: <span class="hljs-function">-&gt;</span>
     @name.isAssignable() <span class="hljs-keyword">and</span> (<span class="hljs-keyword">not</span> @name.isAtomic <span class="hljs-keyword">or</span> @name.isAtomic())
 
-  constructor: <span class="hljs-function"><span class="hljs-params">(name)</span> -&gt;</span>
-    <span class="hljs-keyword">super</span>()
-    @name = <span class="hljs-keyword">if</span> name.compile <span class="hljs-keyword">then</span> name <span class="hljs-keyword">else</span> <span class="hljs-keyword">new</span> Literal name
-
   assigns: <span class="hljs-function"><span class="hljs-params">(name)</span> -&gt;</span>
     @name.assigns name
 
-  compileToFragments: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
-    [ @makeCode(<span class="hljs-string">'...'</span>)
-      @name.compileToFragments(o)... ]
+  compileNode: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
+    [@makeCode(<span class="hljs-string">'...'</span>), @name.compileToFragments(o, LEVEL_OP)...]
 
   unwrap: <span class="hljs-function">-&gt;</span> @name</pre></div></div>
             
         </li>
         
         
-        <li id="section-240">
+        <li id="section-242">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-240">&#182;</a>
+                <a class="pilcrow" href="#section-242">&#182;</a>
               </div>
               <h3 id="expansion">Expansion</h3>
 
@@ -5925,11 +5968,11 @@ <h3 id="expansion">Expansion</h3>
         </li>
         
         
-        <li id="section-241">
+        <li id="section-243">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-241">&#182;</a>
+                <a class="pilcrow" href="#section-243">&#182;</a>
               </div>
               <p>Used to skip values inside an array destructuring (pattern matching) or
 parameter list.</p>
@@ -5951,11 +5994,11 @@ <h3 id="expansion">Expansion</h3>
         </li>
         
         
-        <li id="section-242">
+        <li id="section-244">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-242">&#182;</a>
+                <a class="pilcrow" href="#section-244">&#182;</a>
               </div>
               <h3 id="while">While</h3>
 
@@ -5964,11 +6007,11 @@ <h3 id="while">While</h3>
         </li>
         
         
-        <li id="section-243">
+        <li id="section-245">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-243">&#182;</a>
+                <a class="pilcrow" href="#section-245">&#182;</a>
               </div>
               <p>A while loop, the only sort of low-level loop exposed by CoffeeScript. From
 it, all other loops can be manufactured. Useful in cases where you need more
@@ -6007,11 +6050,11 @@ <h3 id="while">While</h3>
         </li>
         
         
-        <li id="section-244">
+        <li id="section-246">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-244">&#182;</a>
+                <a class="pilcrow" href="#section-246">&#182;</a>
               </div>
               <p>The main difference from a JavaScript <em>while</em> is that the CoffeeScript
 <em>while</em> can be used as a part of a larger expression – while loops may
@@ -6044,11 +6087,11 @@ <h3 id="while">While</h3>
         </li>
         
         
-        <li id="section-245">
+        <li id="section-247">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-245">&#182;</a>
+                <a class="pilcrow" href="#section-247">&#182;</a>
               </div>
               <h3 id="op">Op</h3>
 
@@ -6057,11 +6100,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-246">
+        <li id="section-248">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-246">&#182;</a>
+                <a class="pilcrow" href="#section-248">&#182;</a>
               </div>
               <p>Simple Arithmetic and logical operations. Performs some conversion from
 CoffeeScript operations into their JavaScript equivalents.</p>
@@ -6089,11 +6132,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-247">
+        <li id="section-249">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-247">&#182;</a>
+                <a class="pilcrow" href="#section-249">&#182;</a>
               </div>
               <p>The map of conversions from CoffeeScript to JavaScript symbols.</p>
 
@@ -6108,11 +6151,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-248">
+        <li id="section-250">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-248">&#182;</a>
+                <a class="pilcrow" href="#section-250">&#182;</a>
               </div>
               <p>The map of invertible operators.</p>
 
@@ -6143,11 +6186,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-249">
+        <li id="section-251">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-249">&#182;</a>
+                <a class="pilcrow" href="#section-251">&#182;</a>
               </div>
               <p>Am I capable of
 <a href="https://docs.python.org/3/reference/expressions.html#not-in">Python-style comparison chaining</a>?</p>
@@ -6209,11 +6252,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-250">
+        <li id="section-252">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-250">&#182;</a>
+                <a class="pilcrow" href="#section-252">&#182;</a>
               </div>
               <p>In chains, there’s no need to wrap bare obj literals in parens,
 as the chained expression is wrapped.</p>
@@ -6243,11 +6286,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-251">
+        <li id="section-253">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-251">&#182;</a>
+                <a class="pilcrow" href="#section-253">&#182;</a>
               </div>
               <p>Mimic Python’s chained comparisons when multiple comparison operators are
 used sequentially. For example:</p>
@@ -6266,11 +6309,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-252">
+        <li id="section-254">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-252">&#182;</a>
+                <a class="pilcrow" href="#section-254">&#182;</a>
               </div>
               <p>Keep reference to the left expression, unless this an existential assignment</p>
 
@@ -6288,11 +6331,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-253">
+        <li id="section-255">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-253">&#182;</a>
+                <a class="pilcrow" href="#section-255">&#182;</a>
               </div>
               <p>Compile a unary <strong>Op</strong>.</p>
 
@@ -6338,11 +6381,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-254">
+        <li id="section-256">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-254">&#182;</a>
+                <a class="pilcrow" href="#section-256">&#182;</a>
               </div>
               <p>Make a Math.pow call</p>
 
@@ -6367,11 +6410,11 @@ <h3 id="op">Op</h3>
         </li>
         
         
-        <li id="section-255">
+        <li id="section-257">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-255">&#182;</a>
+                <a class="pilcrow" href="#section-257">&#182;</a>
               </div>
               <h3 id="in">In</h3>
 
@@ -6394,11 +6437,11 @@ <h3 id="in">In</h3>
         </li>
         
         
-        <li id="section-256">
+        <li id="section-258">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-256">&#182;</a>
+                <a class="pilcrow" href="#section-258">&#182;</a>
               </div>
               <p><code>compileOrTest</code> only if we have an array literal with no splats</p>
 
@@ -6430,11 +6473,11 @@ <h3 id="in">In</h3>
         </li>
         
         
-        <li id="section-257">
+        <li id="section-259">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-257">&#182;</a>
+                <a class="pilcrow" href="#section-259">&#182;</a>
               </div>
               <h3 id="try">Try</h3>
 
@@ -6443,11 +6486,11 @@ <h3 id="try">Try</h3>
         </li>
         
         
-        <li id="section-258">
+        <li id="section-260">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-258">&#182;</a>
+                <a class="pilcrow" href="#section-260">&#182;</a>
               </div>
               <p>A classic <em>try/catch/finally</em> block.</p>
 
@@ -6471,11 +6514,11 @@ <h3 id="try">Try</h3>
         </li>
         
         
-        <li id="section-259">
+        <li id="section-261">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-259">&#182;</a>
+                <a class="pilcrow" href="#section-261">&#182;</a>
               </div>
               <p>Compilation is more or less as you would expect – the <em>finally</em> clause
 is optional, the <em>catch</em> is not.</p>
@@ -6511,11 +6554,11 @@ <h3 id="try">Try</h3>
         </li>
         
         
-        <li id="section-260">
+        <li id="section-262">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-260">&#182;</a>
+                <a class="pilcrow" href="#section-262">&#182;</a>
               </div>
               <h3 id="throw">Throw</h3>
 
@@ -6524,11 +6567,11 @@ <h3 id="throw">Throw</h3>
         </li>
         
         
-        <li id="section-261">
+        <li id="section-263">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-261">&#182;</a>
+                <a class="pilcrow" href="#section-263">&#182;</a>
               </div>
               <p>Simple node to throw an exception.</p>
 
@@ -6546,11 +6589,11 @@ <h3 id="throw">Throw</h3>
         </li>
         
         
-        <li id="section-262">
+        <li id="section-264">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-262">&#182;</a>
+                <a class="pilcrow" href="#section-264">&#182;</a>
               </div>
               <p>A <strong>Throw</strong> is already a return, of sorts…</p>
 
@@ -6559,7 +6602,7 @@ <h3 id="throw">Throw</h3>
             <div class="content"><div class='highlight'><pre>  makeReturn: THIS
 
   compileNode: <span class="hljs-function"><span class="hljs-params">(o)</span> -&gt;</span>
-    fragments = @expression.compileToFragments o
+    fragments = @expression.compileToFragments o, LEVEL_LIST
     unshiftAfterComments fragments, @makeCode <span class="hljs-string">'throw '</span>
     fragments.unshift @makeCode @tab
     fragments.push @makeCode <span class="hljs-string">';'</span>
@@ -6568,11 +6611,11 @@ <h3 id="throw">Throw</h3>
         </li>
         
         
-        <li id="section-263">
+        <li id="section-265">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-263">&#182;</a>
+                <a class="pilcrow" href="#section-265">&#182;</a>
               </div>
               <h3 id="existence">Existence</h3>
 
@@ -6581,11 +6624,11 @@ <h3 id="existence">Existence</h3>
         </li>
         
         
-        <li id="section-264">
+        <li id="section-266">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-264">&#182;</a>
+                <a class="pilcrow" href="#section-266">&#182;</a>
               </div>
               <p>Checks a variable for existence – not <code>null</code> and not <code>undefined</code>. This is
 similar to <code>.nil?</code> in Ruby, and avoids having to consult a JavaScript truth
@@ -6625,11 +6668,11 @@ <h3 id="existence">Existence</h3>
         </li>
         
         
-        <li id="section-265">
+        <li id="section-267">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-265">&#182;</a>
+                <a class="pilcrow" href="#section-267">&#182;</a>
               </div>
               <p>We explicity want to use loose equality (<code>==</code>) when comparing against <code>null</code>,
 so that an existence check roughly corresponds to a check for truthiness.
@@ -6650,11 +6693,11 @@ <h3 id="existence">Existence</h3>
         </li>
         
         
-        <li id="section-266">
+        <li id="section-268">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-266">&#182;</a>
+                <a class="pilcrow" href="#section-268">&#182;</a>
               </div>
               <h3 id="parens">Parens</h3>
 
@@ -6663,11 +6706,11 @@ <h3 id="parens">Parens</h3>
         </li>
         
         
-        <li id="section-267">
+        <li id="section-269">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-267">&#182;</a>
+                <a class="pilcrow" href="#section-269">&#182;</a>
               </div>
               <p>An extra set of parentheses, specified explicitly in the source. At one time
 we tried to clean up the results by detecting and removing redundant
@@ -6701,11 +6744,11 @@ <h3 id="parens">Parens</h3>
         </li>
         
         
-        <li id="section-268">
+        <li id="section-270">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-268">&#182;</a>
+                <a class="pilcrow" href="#section-270">&#182;</a>
               </div>
               <h3 id="stringwithinterpolations">StringWithInterpolations</h3>
 
@@ -6721,11 +6764,11 @@ <h3 id="stringwithinterpolations">StringWithInterpolations</h3>
         </li>
         
         
-        <li id="section-269">
+        <li id="section-271">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-269">&#182;</a>
+                <a class="pilcrow" href="#section-271">&#182;</a>
               </div>
               <p><code>unwrap</code> returns <code>this</code> to stop ancestor nodes reaching in to grab @body,
 and using @body.compileNode. <code>StringWithInterpolations.compileNode</code> is
@@ -6746,11 +6789,11 @@ <h3 id="stringwithinterpolations">StringWithInterpolations</h3>
         </li>
         
         
-        <li id="section-270">
+        <li id="section-272">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-270">&#182;</a>
+                <a class="pilcrow" href="#section-272">&#182;</a>
               </div>
               <p>Assumes that <code>expr</code> is <code>Value</code> » <code>StringLiteral</code> or <code>Op</code></p>
 
@@ -6780,11 +6823,11 @@ <h3 id="stringwithinterpolations">StringWithInterpolations</h3>
         </li>
         
         
-        <li id="section-271">
+        <li id="section-273">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-271">&#182;</a>
+                <a class="pilcrow" href="#section-273">&#182;</a>
               </div>
               <p>This node is getting discarded, but salvage its comments.</p>
 
@@ -6804,17 +6847,17 @@ <h3 id="stringwithinterpolations">StringWithInterpolations</h3>
     fragments.push @makeCode <span class="hljs-string">'`'</span> <span class="hljs-keyword">unless</span> @csx
     <span class="hljs-keyword">for</span> element <span class="hljs-keyword">in</span> elements
       <span class="hljs-keyword">if</span> element <span class="hljs-keyword">instanceof</span> StringLiteral
-        element.value = element.unquote @csx
+        element.value = element.unquote <span class="hljs-literal">yes</span>, @csx
         <span class="hljs-keyword">unless</span> @csx</pre></div></div>
             
         </li>
         
         
-        <li id="section-272">
+        <li id="section-274">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-272">&#182;</a>
+                <a class="pilcrow" href="#section-274">&#182;</a>
               </div>
               <p>Backticks and <code>${</code> inside template literals must be escaped.</p>
 
@@ -6835,11 +6878,11 @@ <h3 id="stringwithinterpolations">StringWithInterpolations</h3>
         </li>
         
         
-        <li id="section-273">
+        <li id="section-275">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-273">&#182;</a>
+                <a class="pilcrow" href="#section-275">&#182;</a>
               </div>
               <p>Flag the <code>{</code> and <code>}</code> fragments as having been generated by this
 <code>StringWithInterpolations</code> node, so that <code>compileComments</code> knows
@@ -6862,11 +6905,11 @@ <h3 id="stringwithinterpolations">StringWithInterpolations</h3>
         </li>
         
         
-        <li id="section-274">
+        <li id="section-276">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-274">&#182;</a>
+                <a class="pilcrow" href="#section-276">&#182;</a>
               </div>
               <h3 id="for">For</h3>
 
@@ -6875,11 +6918,11 @@ <h3 id="for">For</h3>
         </li>
         
         
-        <li id="section-275">
+        <li id="section-277">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-275">&#182;</a>
+                <a class="pilcrow" href="#section-277">&#182;</a>
               </div>
               <p>CoffeeScript’s replacement for the <em>for</em> loop is our array and object
 comprehensions, that compile into <em>for</em> loops here. They also act as an
@@ -6911,11 +6954,11 @@ <h3 id="for">For</h3>
         </li>
         
         
-        <li id="section-276">
+        <li id="section-278">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-276">&#182;</a>
+                <a class="pilcrow" href="#section-278">&#182;</a>
               </div>
               <p>Move up any comments in the “<code>for</code> line”, i.e. the line of code with <code>for</code>,
 from any child nodes of that line up to the <code>for</code> node itself so that these
@@ -6930,11 +6973,11 @@ <h3 id="for">For</h3>
         </li>
         
         
-        <li id="section-277">
+        <li id="section-279">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-277">&#182;</a>
+                <a class="pilcrow" href="#section-279">&#182;</a>
               </div>
               <p>These comments are buried pretty deeply, so if they happen to be
 trailing comments the line they trail will be unrecognizable when
@@ -6952,11 +6995,11 @@ <h3 id="for">For</h3>
         </li>
         
         
-        <li id="section-278">
+        <li id="section-280">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-278">&#182;</a>
+                <a class="pilcrow" href="#section-280">&#182;</a>
               </div>
               <p>Welcome to the hairiest method in all of CoffeeScript. Handles the inner
 loop, filtering, stepping, and result saving for array, object, and range
@@ -7075,11 +7118,11 @@ <h3 id="for">For</h3>
         </li>
         
         
-        <li id="section-279">
+        <li id="section-281">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-279">&#182;</a>
+                <a class="pilcrow" href="#section-281">&#182;</a>
               </div>
               <h3 id="switch">Switch</h3>
 
@@ -7088,11 +7131,11 @@ <h3 id="switch">Switch</h3>
         </li>
         
         
-        <li id="section-280">
+        <li id="section-282">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-280">&#182;</a>
+                <a class="pilcrow" href="#section-282">&#182;</a>
               </div>
               <p>A JavaScript <em>switch</em> statement. Converts into a returnable expression on-demand.</p>
 
@@ -7140,11 +7183,11 @@ <h3 id="switch">Switch</h3>
         </li>
         
         
-        <li id="section-281">
+        <li id="section-283">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-281">&#182;</a>
+                <a class="pilcrow" href="#section-283">&#182;</a>
               </div>
               <h3 id="if">If</h3>
 
@@ -7153,11 +7196,11 @@ <h3 id="if">If</h3>
         </li>
         
         
-        <li id="section-282">
+        <li id="section-284">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-282">&#182;</a>
+                <a class="pilcrow" href="#section-284">&#182;</a>
               </div>
               <p><em>If/else</em> statements. Acts as an expression by pushing down requested returns
 to the last line of each clause.</p>
@@ -7183,11 +7226,11 @@ <h3 id="if">If</h3>
         </li>
         
         
-        <li id="section-283">
+        <li id="section-285">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-283">&#182;</a>
+                <a class="pilcrow" href="#section-285">&#182;</a>
               </div>
               <p>Rewrite a chain of <strong>Ifs</strong> to add a default case as the final <em>else</em>.</p>
 
@@ -7205,11 +7248,11 @@ <h3 id="if">If</h3>
         </li>
         
         
-        <li id="section-284">
+        <li id="section-286">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-284">&#182;</a>
+                <a class="pilcrow" href="#section-286">&#182;</a>
               </div>
               <p>The <strong>If</strong> only compiles into a statement if either of its bodies needs
 to be a statement. Otherwise a conditional operator is safe.</p>
@@ -7237,11 +7280,11 @@ <h3 id="if">If</h3>
         </li>
         
         
-        <li id="section-285">
+        <li id="section-287">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-285">&#182;</a>
+                <a class="pilcrow" href="#section-287">&#182;</a>
               </div>
               <p>Compile the <code>If</code> as a regular <em>if-else</em> statement. Flattened chains
 force inner <em>else</em> bodies into statement form.</p>
@@ -7272,11 +7315,11 @@ <h3 id="if">If</h3>
         </li>
         
         
-        <li id="section-286">
+        <li id="section-288">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-286">&#182;</a>
+                <a class="pilcrow" href="#section-288">&#182;</a>
               </div>
               <p>Compile the <code>If</code> as a conditional operator.</p>
 
@@ -7295,11 +7338,11 @@ <h3 id="if">If</h3>
         </li>
         
         
-        <li id="section-287">
+        <li id="section-289">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-287">&#182;</a>
+                <a class="pilcrow" href="#section-289">&#182;</a>
               </div>
               <h2 id="constants">Constants</h2>
 
@@ -7308,11 +7351,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-288">
+        <li id="section-290">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-288">&#182;</a>
+                <a class="pilcrow" href="#section-290">&#182;</a>
               </div>
               
             </div>
@@ -7333,16 +7376,29 @@ <h2 id="constants">Constants</h2>
         throw new Error('Bound instance method accessed before binding');
       }
     }
+  "</span>
+  _extends: <span class="hljs-function">-&gt;</span> <span class="hljs-string">"
+    Object.assign || function (target) {
+      for (var i = 1; i &lt; arguments.length; i++) {
+        var source = arguments[i];
+        for (var key in source) {
+          if (Object.prototype.hasOwnProperty.call(source, key)) {
+            target[key] = source[key];
+          }
+        }
+      }
+      return target;
+    }
   "</span></pre></div></div>
             
         </li>
         
         
-        <li id="section-289">
+        <li id="section-291">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-289">&#182;</a>
+                <a class="pilcrow" href="#section-291">&#182;</a>
               </div>
               <p>Shortcuts to speed up the lookup time for native functions.</p>
 
@@ -7356,11 +7412,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-290">
+        <li id="section-292">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-290">&#182;</a>
+                <a class="pilcrow" href="#section-292">&#182;</a>
               </div>
               <p>Levels indicate a node’s position in the AST. Useful for knowing if
 parens are necessary or superfluous.</p>
@@ -7377,11 +7433,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-291">
+        <li id="section-293">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-291">&#182;</a>
+                <a class="pilcrow" href="#section-293">&#182;</a>
               </div>
               <p>Tabs are two spaces for pretty printing.</p>
 
@@ -7394,11 +7450,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-292">
+        <li id="section-294">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-292">&#182;</a>
+                <a class="pilcrow" href="#section-294">&#182;</a>
               </div>
               <h2 id="helper-functions">Helper Functions</h2>
 
@@ -7407,11 +7463,11 @@ <h2 id="helper-functions">Helper Functions</h2>
         </li>
         
         
-        <li id="section-293">
+        <li id="section-295">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-293">&#182;</a>
+                <a class="pilcrow" href="#section-295">&#182;</a>
               </div>
               
             </div>
@@ -7419,11 +7475,11 @@ <h2 id="helper-functions">Helper Functions</h2>
         </li>
         
         
-        <li id="section-294">
+        <li id="section-296">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-294">&#182;</a>
+                <a class="pilcrow" href="#section-296">&#182;</a>
               </div>
               <p>Helper for ensuring that utility functions are assigned at the top level.</p>
 
@@ -7448,11 +7504,11 @@ <h2 id="helper-functions">Helper Functions</h2>
         </li>
         
         
-        <li id="section-295">
+        <li id="section-297">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-295">&#182;</a>
+                <a class="pilcrow" href="#section-297">&#182;</a>
               </div>
               <p>Wherever in CoffeeScript 1 we might’ve inserted a <code>makeCode &quot;#{@tab}&quot;</code> to
 indent a line of code, now we must account for the possibility of comments
@@ -7479,11 +7535,11 @@ <h2 id="helper-functions">Helper Functions</h2>
         </li>
         
         
-        <li id="section-296">
+        <li id="section-298">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-296">&#182;</a>
+                <a class="pilcrow" href="#section-298">&#182;</a>
               </div>
               <p>Move the <code>comments</code> property from one object to another, deleting it from
 the first object.</p>
@@ -7498,11 +7554,11 @@ <h2 id="helper-functions">Helper Functions</h2>
         </li>
         
         
-        <li id="section-297">
+        <li id="section-299">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-297">&#182;</a>
+                <a class="pilcrow" href="#section-299">&#182;</a>
               </div>
               <p>Sometimes when compiling a node, we want to insert a fragment at the start
 of an array of fragments; but if the start has one or more comment fragments,
@@ -7530,11 +7586,11 @@ <h2 id="helper-functions">Helper Functions</h2>
         </li>
         
         
-        <li id="section-298">
+        <li id="section-300">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-298">&#182;</a>
+                <a class="pilcrow" href="#section-300">&#182;</a>
               </div>
               <p>Unfold a node’s child if soak, then tuck the node under created <code>If</code></p>
 
diff --git a/docs/v2/annotated-source/public/fonts/roboto-black.eot b/docs/v2/annotated-source/public/fonts/roboto-black.eot
old mode 100755
new mode 100644
diff --git a/docs/v2/annotated-source/public/fonts/roboto-black.ttf b/docs/v2/annotated-source/public/fonts/roboto-black.ttf
old mode 100755
new mode 100644
diff --git a/docs/v2/annotated-source/public/fonts/roboto-black.woff b/docs/v2/annotated-source/public/fonts/roboto-black.woff
old mode 100755
new mode 100644
diff --git a/docs/v2/annotated-source/repl.html b/docs/v2/annotated-source/repl.html
index f0c5b5ed29..ee1b1961d2 100644
--- a/docs/v2/annotated-source/repl.html
+++ b/docs/v2/annotated-source/repl.html
@@ -306,9 +306,9 @@ <h1>repl.coffee</h1>
             </div>
             
             <div class="content"><div class='highlight'><pre>      <span class="hljs-keyword">if</span> isAsync
-        result = <span class="hljs-keyword">await</span> result
-        cb <span class="hljs-literal">null</span>, result <span class="hljs-keyword">unless</span> sawSIGINT
-        sawSIGINT = <span class="hljs-literal">false</span>
+        result.<span class="hljs-keyword">then</span> (resolvedResult) -&gt;
+          cb <span class="hljs-literal">null</span>, resolvedResult <span class="hljs-keyword">unless</span> sawSIGINT
+        sawSIGINT = <span class="hljs-literal">no</span>
       <span class="hljs-keyword">else</span>
         cb <span class="hljs-literal">null</span>, result
     <span class="hljs-keyword">catch</span> err</pre></div></div>
diff --git a/docs/v2/annotated-source/rewriter.html b/docs/v2/annotated-source/rewriter.html
index 51f969d95d..34c1a756a4 100644
--- a/docs/v2/annotated-source/rewriter.html
+++ b/docs/v2/annotated-source/rewriter.html
@@ -234,6 +234,7 @@ <h1>rewriter.coffee</h1>
     @normalizeLines()
     @tagPostfixConditionals()
     @addImplicitBracesAndParens()
+    @addParensToChainedDoIife()
     @rescueStowawayComments()
     @addLocationDataToGeneratedTokens()
     @enforceValidCSXAttributes()
@@ -694,7 +695,8 @@ <h1>rewriter.coffee</h1>
             
             <div class="content"><div class='highlight'><pre>      <span class="hljs-keyword">if</span> (tag <span class="hljs-keyword">in</span> IMPLICIT_FUNC <span class="hljs-keyword">and</span> token.spaced <span class="hljs-keyword">or</span>
           tag <span class="hljs-keyword">is</span> <span class="hljs-string">'?'</span> <span class="hljs-keyword">and</span> i &gt; <span class="hljs-number">0</span> <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> tokens[i - <span class="hljs-number">1</span>].spaced) <span class="hljs-keyword">and</span>
-         (nextTag <span class="hljs-keyword">in</span> IMPLICIT_CALL <span class="hljs-keyword">or</span> nextTag <span class="hljs-keyword">is</span> <span class="hljs-string">'...'</span> <span class="hljs-keyword">or</span>
+         (nextTag <span class="hljs-keyword">in</span> IMPLICIT_CALL <span class="hljs-keyword">or</span>
+         (nextTag <span class="hljs-keyword">is</span> <span class="hljs-string">'...'</span> <span class="hljs-keyword">and</span> @tag(i + <span class="hljs-number">2</span>) <span class="hljs-keyword">in</span> IMPLICIT_CALL <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> @findTagsBackwards(i, [<span class="hljs-string">'INDEX_START'</span>, <span class="hljs-string">'['</span>])) <span class="hljs-keyword">or</span>
           nextTag <span class="hljs-keyword">in</span> IMPLICIT_UNSPACED_CALL <span class="hljs-keyword">and</span>
           <span class="hljs-keyword">not</span> nextToken.spaced <span class="hljs-keyword">and</span> <span class="hljs-keyword">not</span> nextToken.newLine)
         tag = token[<span class="hljs-number">0</span>] = <span class="hljs-string">'FUNC_EXIST'</span> <span class="hljs-keyword">if</span> tag <span class="hljs-keyword">is</span> <span class="hljs-string">'?'</span>
@@ -767,7 +769,7 @@ <h1>rewriter.coffee</h1>
           <span class="hljs-keyword">when</span> @tag(i - <span class="hljs-number">2</span>) <span class="hljs-keyword">is</span> <span class="hljs-string">'@'</span> <span class="hljs-keyword">then</span> i - <span class="hljs-number">2</span>
           <span class="hljs-keyword">else</span> i - <span class="hljs-number">1</span>
 
-        startsLine = s <span class="hljs-keyword">is</span> <span class="hljs-number">0</span> <span class="hljs-keyword">or</span> @tag(s - <span class="hljs-number">1</span>) <span class="hljs-keyword">in</span> LINEBREAKS <span class="hljs-keyword">or</span> tokens[s - <span class="hljs-number">1</span>].newLine</pre></div></div>
+        startsLine = s &lt;= <span class="hljs-number">0</span> <span class="hljs-keyword">or</span> @tag(s - <span class="hljs-number">1</span>) <span class="hljs-keyword">in</span> LINEBREAKS <span class="hljs-keyword">or</span> tokens[s - <span class="hljs-number">1</span>].newLine</pre></div></div>
             
         </li>
         
@@ -1197,6 +1199,42 @@ <h1>rewriter.coffee</h1>
               <div class="pilwrap ">
                 <a class="pilcrow" href="#section-48">&#182;</a>
               </div>
+              <p>Add parens around a <code>do</code> IIFE followed by a chained <code>.</code> so that the
+chaining applies to the executed function rather than the function
+object (see #3736)</p>
+
+            </div>
+            
+            <div class="content"><div class='highlight'><pre>  addParensToChainedDoIife: <span class="hljs-function">-&gt;</span>
+<span class="hljs-function">    <span class="hljs-title">condition</span> = <span class="hljs-params">(token, i)</span> -&gt;</span>
+      @tag(i - <span class="hljs-number">1</span>) <span class="hljs-keyword">is</span> <span class="hljs-string">'OUTDENT'</span>
+<span class="hljs-function">    <span class="hljs-title">action</span> = <span class="hljs-params">(token, i)</span> -&gt;</span>
+      <span class="hljs-keyword">return</span> <span class="hljs-keyword">unless</span> token[<span class="hljs-number">0</span>] <span class="hljs-keyword">in</span> CALL_CLOSERS
+      @tokens.splice doIndex, <span class="hljs-number">0</span>, generate <span class="hljs-string">'('</span>, <span class="hljs-string">'('</span>, @tokens[doIndex]
+      @tokens.splice i + <span class="hljs-number">1</span>, <span class="hljs-number">0</span>, generate <span class="hljs-string">')'</span>, <span class="hljs-string">')'</span>, @tokens[i]
+    doIndex = <span class="hljs-literal">null</span>
+    @scanTokens (token, i, tokens) -&gt;
+      <span class="hljs-keyword">return</span> <span class="hljs-number">1</span> <span class="hljs-keyword">unless</span> token[<span class="hljs-number">1</span>] <span class="hljs-keyword">is</span> <span class="hljs-string">'do'</span>
+      doIndex = i
+      glyphIndex = i + <span class="hljs-number">1</span>
+      <span class="hljs-keyword">if</span> @tag(i + <span class="hljs-number">1</span>) <span class="hljs-keyword">is</span> <span class="hljs-string">'PARAM_START'</span>
+        glyphIndex = <span class="hljs-literal">null</span>
+        @detectEnd i + <span class="hljs-number">1</span>,
+          <span class="hljs-function"><span class="hljs-params">(token, i)</span> -&gt;</span> @tag(i - <span class="hljs-number">1</span>) <span class="hljs-keyword">is</span> <span class="hljs-string">'PARAM_END'</span>
+          (token, i) -&gt; glyphIndex = i
+      <span class="hljs-keyword">return</span> <span class="hljs-number">1</span> <span class="hljs-keyword">unless</span> glyphIndex? <span class="hljs-keyword">and</span> @tag(glyphIndex) <span class="hljs-keyword">in</span> [<span class="hljs-string">'-&gt;'</span>, <span class="hljs-string">'=&gt;'</span>] <span class="hljs-keyword">and</span> @tag(glyphIndex + <span class="hljs-number">1</span>) <span class="hljs-keyword">is</span> <span class="hljs-string">'INDENT'</span>
+      @detectEnd glyphIndex + <span class="hljs-number">1</span>, condition, action
+      <span class="hljs-keyword">return</span> <span class="hljs-number">2</span></pre></div></div>
+            
+        </li>
+        
+        
+        <li id="section-49">
+            <div class="annotation">
+              
+              <div class="pilwrap ">
+                <a class="pilcrow" href="#section-49">&#182;</a>
+              </div>
               <p>Because our grammar is LALR(1), it can’t handle some single-line
 expressions that lack ending delimiters. The <strong>Rewriter</strong> adds the implicit
 blocks, so it doesn’t need to. To keep the grammar clean and tidy, trailing
@@ -1250,11 +1288,11 @@ <h1>rewriter.coffee</h1>
         </li>
         
         
-        <li id="section-49">
+        <li id="section-50">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-49">&#182;</a>
+                <a class="pilcrow" href="#section-50">&#182;</a>
               </div>
               <p>Tag postfix conditionals as such, so that we can parse them with a
 different precedence.</p>
@@ -1282,11 +1320,11 @@ <h1>rewriter.coffee</h1>
         </li>
         
         
-        <li id="section-50">
+        <li id="section-51">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-50">&#182;</a>
+                <a class="pilcrow" href="#section-51">&#182;</a>
               </div>
               <p>Generate the indentation tokens, based on another token on the same line.</p>
 
@@ -1307,11 +1345,11 @@ <h1>rewriter.coffee</h1>
         </li>
         
         
-        <li id="section-51">
+        <li id="section-52">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-51">&#182;</a>
+                <a class="pilcrow" href="#section-52">&#182;</a>
               </div>
               <p>Look up a tag by token index.</p>
 
@@ -1322,11 +1360,11 @@ <h1>rewriter.coffee</h1>
         </li>
         
         
-        <li id="section-52">
+        <li id="section-53">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-52">&#182;</a>
+                <a class="pilcrow" href="#section-53">&#182;</a>
               </div>
               <h2 id="constants">Constants</h2>
 
@@ -1335,11 +1373,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-53">
+        <li id="section-54">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-53">&#182;</a>
+                <a class="pilcrow" href="#section-54">&#182;</a>
               </div>
               
             </div>
@@ -1347,11 +1385,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-54">
+        <li id="section-55">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-54">&#182;</a>
+                <a class="pilcrow" href="#section-55">&#182;</a>
               </div>
               <p>List of the token pairs that must be balanced.</p>
 
@@ -1372,11 +1410,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-55">
+        <li id="section-56">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-55">&#182;</a>
+                <a class="pilcrow" href="#section-56">&#182;</a>
               </div>
               <p>The inverse mappings of <code>BALANCED_PAIRS</code> we’re trying to fix up, so we can
 look things up from either end.</p>
@@ -1388,11 +1426,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-56">
+        <li id="section-57">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-56">&#182;</a>
+                <a class="pilcrow" href="#section-57">&#182;</a>
               </div>
               <p>The tokens that signal the start/end of a balanced pair.</p>
 
@@ -1408,11 +1446,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-57">
+        <li id="section-58">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-57">&#182;</a>
+                <a class="pilcrow" href="#section-58">&#182;</a>
               </div>
               <p>Tokens that indicate the close of a clause of an expression.</p>
 
@@ -1423,11 +1461,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-58">
+        <li id="section-59">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-58">&#182;</a>
+                <a class="pilcrow" href="#section-59">&#182;</a>
               </div>
               <p>Tokens that, if followed by an <code>IMPLICIT_CALL</code>, indicate a function invocation.</p>
 
@@ -1438,11 +1476,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-59">
+        <li id="section-60">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-59">&#182;</a>
+                <a class="pilcrow" href="#section-60">&#182;</a>
               </div>
               <p>If preceded by an <code>IMPLICIT_FUNC</code>, indicates a function invocation.</p>
 
@@ -1462,11 +1500,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-60">
+        <li id="section-61">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-60">&#182;</a>
+                <a class="pilcrow" href="#section-61">&#182;</a>
               </div>
               <p>Tokens that always mark the end of an implicit call for single-liners.</p>
 
@@ -1478,11 +1516,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-61">
+        <li id="section-62">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-61">&#182;</a>
+                <a class="pilcrow" href="#section-62">&#182;</a>
               </div>
               <p>Single-line flavors of block expressions that have unclosed endings.
 The grammar can’t disambiguate them, so we insert the implicit indentation.</p>
@@ -1495,11 +1533,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-62">
+        <li id="section-63">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-62">&#182;</a>
+                <a class="pilcrow" href="#section-63">&#182;</a>
               </div>
               <p>Tokens that end a line.</p>
 
@@ -1510,11 +1548,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-63">
+        <li id="section-64">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-63">&#182;</a>
+                <a class="pilcrow" href="#section-64">&#182;</a>
               </div>
               <p>Tokens that close open calls when they follow a newline.</p>
 
@@ -1525,11 +1563,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-64">
+        <li id="section-65">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-64">&#182;</a>
+                <a class="pilcrow" href="#section-65">&#182;</a>
               </div>
               <p>Tokens that prevent a subsequent indent from ending implicit calls/objects</p>
 
@@ -1540,11 +1578,11 @@ <h2 id="constants">Constants</h2>
         </li>
         
         
-        <li id="section-65">
+        <li id="section-66">
             <div class="annotation">
               
               <div class="pilwrap ">
-                <a class="pilcrow" href="#section-65">&#182;</a>
+                <a class="pilcrow" href="#section-66">&#182;</a>
               </div>
               <p>Tokens that are swallowed up by the parser, never leading to code generation.
 You can spot these in <code>grammar.coffee</code> because the <code>o</code> function second
diff --git a/docs/v2/annotated-source/sourcemap.html b/docs/v2/annotated-source/sourcemap.html
index 3a51418ffa..1a561249c6 100644
--- a/docs/v2/annotated-source/sourcemap.html
+++ b/docs/v2/annotated-source/sourcemap.html
@@ -370,11 +370,18 @@ <h2 id="v3-sourcemap-generation">V3 SourceMap Generation</h2>
 
             </div>
             
-            <div class="content"><div class='highlight'><pre>    v3 =
+            <div class="content"><div class='highlight'><pre>    sources = <span class="hljs-keyword">if</span> options.sourceFiles
+      options.sourceFiles
+    <span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> options.filename
+      [options.filename]
+    <span class="hljs-keyword">else</span>
+      [<span class="hljs-string">'&lt;anonymous&gt;'</span>]
+
+    v3 =
       version:    <span class="hljs-number">3</span>
       file:       options.generatedFile <span class="hljs-keyword">or</span> <span class="hljs-string">''</span>
       sourceRoot: options.sourceRoot <span class="hljs-keyword">or</span> <span class="hljs-string">''</span>
-      sources:    options.sourceFiles <span class="hljs-keyword">or</span> [<span class="hljs-string">''</span>]
+      sources:    sources
       names:      []
       mappings:   buffer
 
diff --git a/docs/v2/browser-compiler/coffeescript.js b/docs/v2/browser-compiler/coffeescript.js
index ca71ad5323..00fee27a7b 100644
--- a/docs/v2/browser-compiler/coffeescript.js
+++ b/docs/v2/browser-compiler/coffeescript.js
@@ -1,8 +1,8 @@
 /**
- * CoffeeScript Compiler v2.0.0-beta4
+ * CoffeeScript Compiler v2.0.0-beta5
  * http://coffeescript.org
  *
  * Copyright 2011, Jeremy Ashkenas
  * Released under the MIT License
  */
-var _get=function e(a,t,o){null===a&&(a=Function.prototype);var n=Object.getOwnPropertyDescriptor(a,t);if(n===void 0){var r=Object.getPrototypeOf(a);return null===r?void 0:e(r,t,o)}if("value"in n)return n.value;var i=n.get;return void 0===i?void 0:i.call(o)},_slicedToArray=function(){function e(e,a){var t=[],o=!0,n=!1,r;try{for(var i=e[Symbol.iterator](),s;!(o=(s=i.next()).done)&&(t.push(s.value),!(a&&t.length===a));o=!0);}catch(e){n=!0,r=e}finally{try{!o&&i["return"]&&i["return"]()}finally{if(n)throw r}}return t}return function(a,t){if(Array.isArray(a))return a;if(Symbol.iterator in Object(a))return e(a,t);throw new TypeError("Invalid attempt to destructure non-iterable instance")}}(),_createClass=function(){function e(e,a){for(var t=0,o;t<a.length;t++)o=a[t],o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(e,o.key,o)}return function(a,t,o){return t&&e(a.prototype,t),o&&e(a,o),a}}();function _possibleConstructorReturn(e,a){if(!e)throw 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a={};return function(){var t=[].indexOf,n=e("./rewriter"),r,i,s,l,d,p,c,u,m,h,g,f,y,k,T,v,N,b,$,_,C,D,E,x,I,S,A,R,O,L,w,F,P,j,M,U,V,B,G,X,H,W,Y,q,z,K,J,Z,Q,ee,ae,te,oe,ne,re,ie,se,le,de,pe,ce,ue,me,he,ge,fe,ye,ke,Te,ve,Ne,be,$e;z=n.Rewriter,S=n.INVERSES;var _e=e("./helpers");he=_e.count,be=_e.starts,me=_e.compact,Ne=_e.repeat,ge=_e.invertLiterate,ve=_e.merge,ue=_e.attachCommentsToNode,Te=_e.locationDataToString,$e=_e.throwSyntaxError,a.Lexer=F=function(){function e(){_classCallCheck(this,e)}return _createClass(e,[{key:"tokenize",value:function(e){var a=1<arguments.length&&void 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z().rewrite(this.tokens)}},{key:"clean",value:function(e){return e.charCodeAt(0)===r&&(e=e.slice(1)),e=e.replace(/\r/g,"").replace(re,""),ce.test(e)&&(e="\n"+e,this.chunkLine--),this.literate&&(e=ge(e)),e}},{key:"identifierToken",value:function(){var e,a,o,n,r,i,l,u,m,h,g,y,k,T,v,N,b,$,_,C,E,x,I,S,A;if(l=this.atCSXTag(),x=l?f:D,!(m=x.exec(this.chunk)))return 0;var O=m,w=_slicedToArray(O,3);if(u=w[0],r=w[1],a=w[2],i=r.length,h=void 0,"own"===r&&"FOR"===this.tag())return this.token("OWN",r),r.length;if("from"===r&&"YIELD"===this.tag())return this.token("FROM",r),r.length;if("as"===r&&this.seenImport&&("*"===this.value()?this.tokens[this.tokens.length-1][0]="IMPORT_ALL":(k=this.value(),0<=t.call(c,k))&&(this.tokens[this.tokens.length-1][0]="IDENTIFIER"),"DEFAULT"===(T=this.tag())||"IMPORT_ALL"===T||"IDENTIFIER"===T))return this.token("AS",r),r.length;if("as"===r&&this.seenExport&&("IDENTIFIER"===(v=this.tag())||"DEFAULT"===v))return this.token("AS",r),r.length;if("default"===r&&this.seenExport&&("EXPORT"===(N=this.tag())||"AS"===N))return this.token("DEFAULT",r),r.length;if("do"===r&&(E=/^(\s*super)(?!\(\))/.exec(this.chunk.slice(3)))){this.token("SUPER","super"),this.token("CALL_START","("),this.token("CALL_END",")");var F=E,P=_slicedToArray(F,2);return u=P[0],I=P[1],I.length+3}if(g=this.prev(),S=a||null!=g&&("."===(b=g[0])||"?."===b||"::"===b||"?::"===b||!g.spaced&&"@"===g[0])?"PROPERTY":"IDENTIFIER","IDENTIFIER"===S&&(0<=t.call(R,r)||0<=t.call(c,r))&&!(this.exportSpecifierList&&0<=t.call(c,r))?(S=r.toUpperCase(),"WHEN"===S&&($=this.tag(),0<=t.call(L,$))?S="LEADING_WHEN":"FOR"===S?this.seenFor=!0:"UNLESS"===S?S="IF":"IMPORT"===S?this.seenImport=!0:"EXPORT"===S?this.seenExport=!0:0<=t.call(ie,S)?S="UNARY":0<=t.call(Y,S)&&("INSTANCEOF"!==S&&this.seenFor?(S="FOR"+S,this.seenFor=!1):(S="RELATION","!"===this.value()&&(h=this.tokens.pop(),r="!"+r)))):"IDENTIFIER"===S&&this.seenFor&&"from"===r&&fe(g)?(S="FORFROM",this.seenFor=!1):"PROPERTY"===S&&g&&(g.spaced&&(_=g[0],0<=t.call(s,_))&&/^[gs]et$/.test(g[1])?this.error("'"+g[1]+"' cannot be used as a keyword, or as a function call without parentheses",g[2]):(y=this.tokens[this.tokens.length-2],("@"===(C=g[0])||"THIS"===C)&&y&&y.spaced&&/^[gs]et$/.test(y[1])&&"."!==this.tokens[this.tokens.length-3][0]&&this.error("'"+y[1]+"' cannot be used as a keyword, or as a function call without parentheses",y[2]))),"IDENTIFIER"===S&&0<=t.call(q,r)&&this.error("reserved word '"+r+"'",{length:r.length}),"PROPERTY"!==S&&(0<=t.call(d,r)&&(e=r,r=p[r]),S=function(){return"!"===r?"UNARY":"=="===r||"!="===r?"COMPARE":"true"===r||"false"===r?"BOOL":"break"===r||"continue"===r||"debugger"===r?"STATEMENT":"&&"===r||"||"===r?r:S}()),A=this.token(S,r,0,i),e&&(A.origin=[S,e,A[2]]),h){var j=[h[2].first_line,h[2].first_column];A[2].first_line=j[0],A[2].first_column=j[1]}return a&&(o=u.lastIndexOf(l?"=":":"),n=this.token(":",":",o,a.length),l&&(n.csxColon=!0)),l&&"IDENTIFIER"===S&&":"!==g[0]&&this.token(",",",",0,0,A),u.length}},{key:"numberToken",value:function(){var e,a,t,o,n,r;if(!(t=U.exec(this.chunk)))return 0;switch(o=t[0],a=o.length,!1){case!/^0[BOX]/.test(o):this.error("radix prefix in '"+o+"' must be lowercase",{offset:1});break;case!/^(?!0x).*E/.test(o):this.error("exponential notation in '"+o+"' must be indicated with a lowercase 'e'",{offset:o.indexOf("E")});break;case!/^0\d*[89]/.test(o):this.error("decimal literal '"+o+"' must not be prefixed with '0'",{length:a});break;case!/^0\d+/.test(o):this.error("octal literal '"+o+"' must be prefixed with '0o'",{length:a});}return e=function(){switch(o.charAt(1)){case"b":return 2;case"o":return 8;case"x":return 16;default:return null;}}(),n=null==e?parseFloat(o):parseInt(o.slice(2),e),r=2e308===n?"INFINITY":"NUMBER",this.token(r,o,0,a),a}},{key:"stringToken",value:function(){var e=this,a=oe.exec(this.chunk)||[],t=_slicedToArray(a,1),o,n,r,s,l,d,p,i,c,u,m,h,g,f,y,k;if(h=t[0],!h)return 0;m=this.prev(),m&&"from"===this.value()&&(this.seenImport||this.seenExport)&&(m[0]="FROM"),f=function(){return"'"===h?te:"\""===h?Q:"'''"===h?b:"\"\"\""===h?v:void 0}(),d=3===h.length;var T=this.matchWithInterpolations(f,h);if(k=T.tokens,l=T.index,o=k.length-1,r=h.charAt(0),d){for(i=null,s=function(){var e,a,t;for(t=[],p=e=0,a=k.length;e<a;p=++e)y=k[p],"NEOSTRING"===y[0]&&t.push(y[1]);return t}().join("#{}");u=N.exec(s);)n=u[1],(null===i||0<(g=n.length)&&g<i.length)&&(i=n);i&&(c=RegExp("\\n"+i,"g")),this.mergeInterpolationTokens(k,{delimiter:r},function(a,t){return a=e.formatString(a,{delimiter:h}),c&&(a=a.replace(c,"\n")),0===t&&(a=a.replace(O,"")),t===o&&(a=a.replace(ne,"")),a})}else this.mergeInterpolationTokens(k,{delimiter:r},function(a,t){return a=e.formatString(a,{delimiter:h}),a=a.replace(J,function(e,n){return 0===t&&0===n||t===o&&n+e.length===a.length?"":" "}),a});return this.atCSXTag()&&this.token(",",",",0,0,this.prev),l}},{key:"commentToken",value:function(){var e=0<arguments.length&&void 0!==arguments[0]?arguments[0]:this.chunk,a,o,n,r,s,l,i,d,p,c,m;if(!(i=e.match(u)))return 0;var h=i,g=_slicedToArray(h,2);return a=g[0],s=g[1],r=null,p=/^\s*\n+\s*#/.test(a),s?(d=T.exec(a),d&&this.error("block comments cannot contain "+d[0],{offset:d.index,length:d[0].length}),e=e.replace("###"+s+"###",""),e=e.replace(/^\n+/,""),this.lineToken(e),n=s,0<=t.call(n,"\n")&&(n=n.replace(RegExp("\\n"+Ne(" ",this.indent),"g"),"\n")),r=[n]):(n=a.replace(/^(\n*)/,""),n=n.replace(/^([ |\t]*)#/gm,""),r=n.split("\n")),o=function(){var e,a,t;for(t=[],l=e=0,a=r.length;e<a;l=++e)n=r[l],t.push({content:n,here:null!=s,newLine:p||0!==l});return t}(),m=this.prev(),m?ue(o,m):(o[0].newLine=!0,this.lineToken(this.chunk.slice(a.length)),c=this.makeToken("JS",""),c.generated=!0,c.comments=o,this.tokens.push(c),this.newlineToken(0)),a.length}},{key:"jsToken",value:function(){var e,a;return"`"===this.chunk.charAt(0)&&(e=C.exec(this.chunk)||A.exec(this.chunk))?(a=e[1].replace(/\\+(`|$)/g,function(e){return e.slice(-Math.ceil(e.length/2))}),this.token("JS",a,0,e[0].length),e[0].length):0}},{key:"regexToken",value:function(){var e=this,a,o,n,r,i,l,d,p,c,u,m,h,g,f,y,k;switch(!1){case!(u=H.exec(this.chunk)):this.error("regular expressions cannot begin with "+u[2],{offset:u.index+u[1].length});break;case!(u=this.matchWithInterpolations($,"///")):var T=u;if(k=T.tokens,d=T.index,r=this.chunk.slice(0,d).match(/\s+(#(?!{).*)/g),r)for(p=0,c=r.length;p<c;p++)n=r[p],this.commentToken(n);break;case!(u=G.exec(this.chunk)):var v=u,N=_slicedToArray(v,3);if(y=N[0],a=N[1],o=N[2],this.validateEscapes(a,{isRegex:!0,offsetInChunk:1}),d=y.length,h=this.prev(),h)if(h.spaced&&(g=h[0],0<=t.call(s,g))){if(!o||B.test(y))return 0;}else if(f=h[0],0<=t.call(M,f))return 0;o||this.error("missing / (unclosed regex)");break;default:return 0;}var b=X.exec(this.chunk.slice(d)),_=_slicedToArray(b,1);switch(l=_[0],i=d+l.length,m=this.makeToken("REGEX",null,0,i),!1){case!!pe.test(l):this.error("invalid regular expression flags "+l,{offset:d,length:l.length});break;case!(y||1===k.length):a=a?this.formatRegex(a,{flags:l,delimiter:"/"}):this.formatHeregex(k[0][1],{flags:l}),this.token("REGEX",""+this.makeDelimitedLiteral(a,{delimiter:"/"})+l,0,i,m);break;default:this.token("REGEX_START","(",0,0,m),this.token("IDENTIFIER","RegExp",0,0),this.token("CALL_START","(",0,0),this.mergeInterpolationTokens(k,{delimiter:"\"",double:!0},function(a){return e.formatHeregex(a,{flags:l})}),l&&(this.token(",",",",d-1,0),this.token("STRING","\""+l+"\"",d-1,l.length)),this.token(")",")",i-1,0),this.token("REGEX_END",")",i-1,0);}return i}},{key:"lineToken",value:function(){var e=0<arguments.length&&void 0!==arguments[0]?arguments[0]:this.chunk,a,t,o,n,r,i,s;if(!(o=j.exec(e)))return 0;if(t=o[0],this.seenFor=!1,this.importSpecifierList||(this.seenImport=!1),this.exportSpecifierList||(this.seenExport=!1),s=t.length-1-t.lastIndexOf("\n"),i=this.unfinished(),r=0<s?t.slice(-s):"",!/^(.?)\1*$/.exec(r))return this.error("mixed indentation",{offset:t.length}),t.length;if(n=Math.min(r.length,this.indentLiteral.length),r.slice(0,n)!==this.indentLiteral.slice(0,n))return this.error("indentation mismatch",{offset:t.length}),t.length;if(s-this.indebt===this.indent)return i?this.suppressNewlines():this.newlineToken(0),t.length;if(s>this.indent){if(i)return this.indebt=s-this.indent,this.suppressNewlines(),t.length;if(!this.tokens.length)return this.baseIndent=this.indent=s,this.indentLiteral=r,t.length;a=s-this.indent+this.outdebt,this.token("INDENT",a,t.length-s,s),this.indents.push(a),this.ends.push({tag:"OUTDENT"}),this.outdebt=this.indebt=0,this.indent=s,this.indentLiteral=r}else s<this.baseIndent?this.error("missing indentation",{offset:t.length}):(this.indebt=0,this.outdentToken(this.indent-s,i,t.length));return t.length}},{key:"outdentToken",value:function(e,a,o){var n,r,i,s;for(n=this.indent-e;0<e;)i=this.indents[this.indents.length-1],i?this.outdebt&&e<=this.outdebt?(this.outdebt-=e,e=0):(r=this.indents.pop()+this.outdebt,o&&(s=this.chunk[o],0<=t.call(E,s))&&(n-=r-e,e=r),this.outdebt=0,this.pair("OUTDENT"),this.token("OUTDENT",e,0,o),e-=r):this.outdebt=e=0;for(r&&(this.outdebt-=e);";"===this.value();)this.tokens.pop();return"TERMINATOR"===this.tag()||a||this.token("TERMINATOR","\n",o,0),this.indent=n,this.indentLiteral=this.indentLiteral.slice(0,n),this}},{key:"whitespaceToken",value:function(){var e,a,t;return(e=ce.exec(this.chunk))||(a="\n"===this.chunk.charAt(0))?(t=this.prev(),t&&(t[e?"spaced":"newLine"]=!0),e?e[0].length:0):0}},{key:"newlineToken",value:function(e){for(;";"===this.value();)this.tokens.pop();return"TERMINATOR"!==this.tag()&&this.token("TERMINATOR","\n",e,0),this}},{key:"suppressNewlines",value:function(){var e;return e=this.prev(),"\\"===e[1]&&(e.comments&&1<this.tokens.length&&ue(e.comments,this.tokens[this.tokens.length-2]),this.tokens.pop()),this}},{key:"csxToken",value:function(){var e=this,a,o,n,r,i,s,l,d,p,c,u,h,g,f;if(i=this.chunk[0],u=0<this.tokens.length?this.tokens[this.tokens.length-1][0]:"","<"===i){if(d=y.exec(this.chunk.slice(1)),!(d&&(0<this.csxDepth||!(c=this.prev())||c.spaced||(h=c[0],0>t.call(m,h)))))return 0;var T=d,v=_slicedToArray(T,3);return l=v[0],s=v[1],o=v[2],p=this.token("CSX_TAG",s,1,s.length),this.token("CALL_START","("),this.token("[","["),this.ends.push({tag:"/>",origin:p,name:s}),this.csxDepth++,s.length+1}if(n=this.atCSXTag()){if("/>"===this.chunk.slice(0,2))return this.pair("/>"),this.token("]","]",0,2),this.token("CALL_END",")",0,2),this.csxDepth--,2;if("{"===i)return":"===u?(g=this.token("(","("),this.csxObjAttribute[this.csxDepth]=!1):(g=this.token("{","{"),this.csxObjAttribute[this.csxDepth]=!0),this.ends.push({tag:"}",origin:g}),1;if(">"===i){this.pair("/>"),p=this.token("]","]"),this.token(",",",");var N=this.matchWithInterpolations(I,">","</",k);return f=N.tokens,r=N.index,this.mergeInterpolationTokens(f,{delimiter:"\""},function(a){return e.formatString(a,{delimiter:">"})}),d=y.exec(this.chunk.slice(r)),d&&d[0]===n.name||this.error("expected corresponding CSX closing tag for "+n.name,n.origin[2]),a=r+n.name.length,">"!==this.chunk[a]&&this.error("missing closing > after tag name",{offset:a,length:1}),this.token("CALL_END",")",r,n.name.length+1),this.csxDepth--,a+1}return 0}return this.atCSXTag(1)?"}"===i?(this.pair(i),this.csxObjAttribute[this.csxDepth]?(this.token("}","}"),this.csxObjAttribute[this.csxDepth]=!1):this.token(")",")"),this.token(",",","),1):0:0}},{key:"atCSXTag",value:function(){var e=0<arguments.length&&void 0!==arguments[0]?arguments[0]:0,a,t,o;if(0===this.csxDepth)return!1;for(a=this.ends.length-1;"OUTDENT"===(null==(o=this.ends[a])?void 0:o.tag)||0<e--;)a--;return t=this.ends[a],"/>"===(null==t?void 0:t.tag)&&t}},{key:"literalToken",value:function(){var e,a,o,n,r,i,d,p,c,u,m,f;if(e=V.exec(this.chunk)){var y=e,k=_slicedToArray(y,1);f=k[0],l.test(f)&&this.tagParameters()}else f=this.chunk.charAt(0);if(u=f,n=this.prev(),n&&0<=t.call(["="].concat(_toConsumableArray(g)),f)&&(c=!1,"="!==f||"||"!==(r=n[1])&&"&&"!==r||n.spaced||(n[0]="COMPOUND_ASSIGN",n[1]+="=",n=this.tokens[this.tokens.length-2],c=!0),n&&"PROPERTY"!==n[0]&&(o=null==(i=n.origin)?n:i,a=ye(n[1],o[1]),a&&this.error(a,o[2])),c))return f.length;if("{"===f&&this.seenImport?this.importSpecifierList=!0:this.importSpecifierList&&"}"===f?this.importSpecifierList=!1:"{"===f&&"EXPORT"===(null==n?void 0:n[0])?this.exportSpecifierList=!0:this.exportSpecifierList&&"}"===f&&(this.exportSpecifierList=!1),";"===f)this.seenFor=this.seenImport=this.seenExport=!1,u="TERMINATOR";else if("*"===f&&"EXPORT"===n[0])u="EXPORT_ALL";else if(0<=t.call(P,f))u="MATH";else if(0<=t.call(h,f))u="COMPARE";else if(0<=t.call(g,f))u="COMPOUND_ASSIGN";else if(0<=t.call(ie,f))u="UNARY";else if(0<=t.call(se,f))u="UNARY_MATH";else if(0<=t.call(K,f))u="SHIFT";else if("?"===f&&(null==n?void 0:n.spaced))u="BIN?";else if(n&&!n.spaced)if("("===f&&(d=n[0],0<=t.call(s,d)))"?"===n[0]&&(n[0]="FUNC_EXIST"),u="CALL_START";else if("["===f&&(p=n[0],0<=t.call(x,p)))switch(u="INDEX_START",n[0]){case"?":n[0]="INDEX_SOAK";}return m=this.makeToken(u,f),"("===f||"{"===f||"["===f?this.ends.push({tag:S[f],origin:m}):")"===f||"}"===f||"]"===f?this.pair(f):void 0,(this.tokens.push(this.makeToken(u,f)),f.length)}},{key:"tagParameters",value:function(){var e,a,t,o,n;if(")"!==this.tag())return this;for(t=[],n=this.tokens,e=n.length,a=n[--e],a[0]="PARAM_END";o=n[--e];)switch(o[0]){case")":t.push(o);break;case"(":case"CALL_START":if(t.length)t.pop();else return"("===o[0]?(o[0]="PARAM_START",this):(a[0]="CALL_END",this);}return this}},{key:"closeIndentation",value:function(){return this.outdentToken(this.indent)}},{key:"matchWithInterpolations",value:function(a,t,o,n){var r,i,s,l,d,p,c,u,m,h,g,f,y,k,T,v,N,b;if(null==o&&(o=t),null==n&&(n=/^#\{/),b=[],f=t.length,this.chunk.slice(0,f)!==t)return 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55:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Assign(o.addDataToNode(o,i[s-4])(new o.Value(r[s-4])),r[s-1],"object",{operatorToken:o.addDataToNode(o,i[s-3])(new o.Literal(r[s-3]))}));break;case 56:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Assign(o.addDataToNode(o,i[s-2])(new o.Value(r[s-2])),r[s],null,{operatorToken:o.addDataToNode(o,i[s-1])(new o.Literal(r[s-1]))}));break;case 57:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Assign(o.addDataToNode(o,i[s-4])(new o.Value(r[s-4])),r[s-1],null,{operatorToken:o.addDataToNode(o,i[s-3])(new o.Literal(r[s-3]))}));break;case 63:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(new o.Value(r[s-1])));break;case 64:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(new o.Value(r[s])));break;case 65:case 106:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(r[s-1]));break;case 66:case 107:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(r[s]));break;case 72:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.SuperCall(o.addDataToNode(o,i[s-1])(new 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87:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Code([],r[s],r[s-1]));break;case 88:case 89:this.$=o.addDataToNode(o,i[s],i[s])(new o.FuncGlyph(r[s]));break;case 92:case 134:this.$=o.addDataToNode(o,i[s],i[s])([]);break;case 93:case 135:case 154:case 174:case 203:case 246:this.$=o.addDataToNode(o,i[s],i[s])([r[s]]);break;case 94:case 136:case 155:case 175:case 204:this.$=o.addDataToNode(o,i[s-2],i[s])(r[s-2].concat(r[s]));break;case 95:case 137:case 156:case 176:case 205:this.$=o.addDataToNode(o,i[s-3],i[s])(r[s-3].concat(r[s]));break;case 96:case 138:case 158:case 178:case 207:this.$=o.addDataToNode(o,i[s-5],i[s])(r[s-5].concat(r[s-2]));break;case 97:this.$=o.addDataToNode(o,i[s],i[s])(new o.Param(r[s]));break;case 98:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Param(r[s-1],null,!0));break;case 99:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Param(r[s],null,!0));break;case 100:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Param(r[s-2],r[s]));break;case 101:case 210:this.$=o.addDataToNode(o,i[s],i[s])(new o.Expansion);break;case 109:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s-1].add(r[s]));break;case 121:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Super(o.addDataToNode(o,i[s])(new o.Access(r[s])),[],!1,r[s-2]));break;case 122:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Super(o.addDataToNode(o,i[s-1])(new o.Index(r[s-1])),[],!1,r[s-3]));break;case 124:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Access(r[s],"soak"));break;case 125:this.$=o.addDataToNode(o,i[s-1],i[s])([o.addDataToNode(o,i[s-1])(new o.Access(new o.PropertyName("prototype"))),o.addDataToNode(o,i[s])(new o.Access(r[s]))]);break;case 126:this.$=o.addDataToNode(o,i[s-1],i[s])([o.addDataToNode(o,i[s-1])(new o.Access(new o.PropertyName("prototype"),"soak")),o.addDataToNode(o,i[s])(new o.Access(r[s]))]);break;case 127:this.$=o.addDataToNode(o,i[s],i[s])(new o.Access(new o.PropertyName("prototype")));break;case 130:this.$=o.addDataToNode(o,i[s-1],i[s])(o.extend(r[s],{soak:!0}));break;case 131:this.$=o.addDataToNode(o,i[s],i[s])(new o.Index(r[s]));break;case 132:this.$=o.addDataToNode(o,i[s],i[s])(new o.Slice(r[s]));break;case 133:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Obj(r[s-2],r[s-3].generated));break;case 139:this.$=o.addDataToNode(o,i[s],i[s])(new o.Class);break;case 140:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Class(null,null,r[s]));break;case 141:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Class(null,r[s]));break;case 142:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Class(null,r[s-1],r[s]));break;case 143:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Class(r[s]));break;case 144:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Class(r[s-1],null,r[s]));break;case 145:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Class(r[s-2],r[s]));break;case 146:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Class(r[s-3],r[s-1],r[s]));break;case 147:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.ImportDeclaration(null,r[s]));break;case 148:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ImportDeclaration(new o.ImportClause(r[s-2],null),r[s]));break;case 149:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ImportDeclaration(new o.ImportClause(null,r[s-2]),r[s]));break;case 150:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.ImportDeclaration(new o.ImportClause(null,new o.ImportSpecifierList([])),r[s]));break;case 151:this.$=o.addDataToNode(o,i[s-6],i[s])(new o.ImportDeclaration(new o.ImportClause(null,new o.ImportSpecifierList(r[s-4])),r[s]));break;case 152:this.$=o.addDataToNode(o,i[s-5],i[s])(new o.ImportDeclaration(new o.ImportClause(r[s-4],r[s-2]),r[s]));break;case 153:this.$=o.addDataToNode(o,i[s-8],i[s])(new o.ImportDeclaration(new o.ImportClause(r[s-7],new o.ImportSpecifierList(r[s-4])),r[s]));break;case 157:case 177:case 190:case 206:this.$=o.addDataToNode(o,i[s-3],i[s])(r[s-2]);break;case 159:this.$=o.addDataToNode(o,i[s],i[s])(new o.ImportSpecifier(r[s]));break;case 160:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ImportSpecifier(r[s-2],r[s]));break;case 161:this.$=o.addDataToNode(o,i[s],i[s])(new o.ImportSpecifier(new o.Literal(r[s])));break;case 162:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ImportSpecifier(new o.Literal(r[s-2]),r[s]));break;case 163:this.$=o.addDataToNode(o,i[s],i[s])(new o.ImportDefaultSpecifier(r[s]));break;case 164:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ImportNamespaceSpecifier(new o.Literal(r[s-2]),r[s]));break;case 165:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportNamedDeclaration(new o.ExportSpecifierList([])));break;case 166:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.ExportNamedDeclaration(new o.ExportSpecifierList(r[s-2])));break;case 167:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.ExportNamedDeclaration(r[s]));break;case 168:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ExportNamedDeclaration(new o.Assign(r[s-2],r[s],null,{moduleDeclaration:"export"})));break;case 169:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.ExportNamedDeclaration(new o.Assign(r[s-3],r[s],null,{moduleDeclaration:"export"})));break;case 170:this.$=o.addDataToNode(o,i[s-5],i[s])(new o.ExportNamedDeclaration(new o.Assign(r[s-4],r[s-1],null,{moduleDeclaration:"export"})));break;case 171:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportDefaultDeclaration(r[s]));break;case 172:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ExportAllDeclaration(new o.Literal(r[s-2]),r[s]));break;case 173:this.$=o.addDataToNode(o,i[s-6],i[s])(new o.ExportNamedDeclaration(new o.ExportSpecifierList(r[s-4]),r[s]));break;case 179:this.$=o.addDataToNode(o,i[s],i[s])(new o.ExportSpecifier(r[s]));break;case 180:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportSpecifier(r[s-2],r[s]));break;case 181:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportSpecifier(r[s-2],new o.Literal(r[s])));break;case 182:this.$=o.addDataToNode(o,i[s],i[s])(new o.ExportSpecifier(new o.Literal(r[s])));break;case 183:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportSpecifier(new o.Literal(r[s-2]),r[s]));break;case 184:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.TaggedTemplateCall(r[s-2],r[s],r[s-1]));break;case 185:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Call(r[s-2],r[s],r[s-1]));break;case 186:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.SuperCall(o.addDataToNode(o,i[s-2])(new o.Super),r[s],r[s-1],r[s-2]));break;case 187:this.$=o.addDataToNode(o,i[s],i[s])(!1);break;case 188:this.$=o.addDataToNode(o,i[s],i[s])(!0);break;case 189:this.$=o.addDataToNode(o,i[s-1],i[s])([]);break;case 191:case 192:this.$=o.addDataToNode(o,i[s],i[s])(new o.Value(new o.ThisLiteral(r[s])));break;case 193:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Value(o.addDataToNode(o,i[s-1])(new o.ThisLiteral(r[s-1])),[o.addDataToNode(o,i[s])(new o.Access(r[s]))],"this"));break;case 194:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Arr([]));break;case 195:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Arr(r[s-2]));break;case 196:this.$=o.addDataToNode(o,i[s],i[s])("inclusive");break;case 197:this.$=o.addDataToNode(o,i[s],i[s])("exclusive");break;case 198:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Range(r[s-3],r[s-1],r[s-2]));break;case 199:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Range(r[s-2],r[s],r[s-1]));break;case 200:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Range(r[s-1],null,r[s]));break;case 201:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Range(null,r[s],r[s-1]));break;case 202:this.$=o.addDataToNode(o,i[s],i[s])(new o.Range(null,null,r[s]));break;case 212:this.$=o.addDataToNode(o,i[s-2],i[s])([].concat(r[s-2],r[s]));break;case 213:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Try(r[s]));break;case 214:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Try(r[s-1],r[s][0],r[s][1]));break;case 215:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Try(r[s-2],null,null,r[s]));break;case 216:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Try(r[s-3],r[s-2][0],r[s-2][1],r[s]));break;case 217:this.$=o.addDataToNode(o,i[s-2],i[s])([r[s-1],r[s]]);break;case 218:this.$=o.addDataToNode(o,i[s-2],i[s])([o.addDataToNode(o,i[s-1])(new o.Value(r[s-1])),r[s]]);break;case 219:this.$=o.addDataToNode(o,i[s-1],i[s])([null,r[s]]);break;case 220:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Throw(r[s]));break;case 221:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Throw(new o.Value(r[s-1])));break;case 222:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Parens(r[s-1]));break;case 223:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Parens(r[s-2]));break;case 224:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(r[s]));break;case 225:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.While(r[s-2],{guard:r[s]}));break;case 226:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(r[s],{invert:!0}));break;case 227:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.While(r[s-2],{invert:!0,guard:r[s]}));break;case 228:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s-1].addBody(r[s]));break;case 229:case 230:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s].addBody(o.addDataToNode(o,i[s-1])(o.Block.wrap([r[s-1]]))));break;case 231:this.$=o.addDataToNode(o,i[s],i[s])(r[s]);break;case 232:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(o.addDataToNode(o,i[s-1])(new o.BooleanLiteral("true"))).addBody(r[s]));break;case 233:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(o.addDataToNode(o,i[s-1])(new o.BooleanLiteral("true"))).addBody(o.addDataToNode(o,i[s])(o.Block.wrap([r[s]]))));break;case 234:case 235:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.For(r[s-1],r[s]));break;case 236:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.For(r[s],r[s-1]));break;case 237:this.$=o.addDataToNode(o,i[s-1],i[s])({source:o.addDataToNode(o,i[s])(new o.Value(r[s]))});break;case 238:this.$=o.addDataToNode(o,i[s-3],i[s])({source:o.addDataToNode(o,i[s-2])(new o.Value(r[s-2])),step:r[s]});break;case 239:this.$=o.addDataToNode(o,i[s-1],i[s])(function(){return r[s].own=r[s-1].own,r[s].ownTag=r[s-1].ownTag,r[s].name=r[s-1][0],r[s].index=r[s-1][1],r[s]}());break;case 240:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s]);break;case 241:this.$=o.addDataToNode(o,i[s-2],i[s])(function(){return r[s].own=!0,r[s].ownTag=o.addDataToNode(o,i[s-1])(new o.Literal(r[s-1])),r[s]}());break;case 247:this.$=o.addDataToNode(o,i[s-2],i[s])([r[s-2],r[s]]);break;case 248:this.$=o.addDataToNode(o,i[s-1],i[s])({source:r[s]});break;case 249:this.$=o.addDataToNode(o,i[s-1],i[s])({source:r[s],object:!0});break;case 250:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],guard:r[s]});break;case 251:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],guard:r[s],object:!0});break;case 252:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],step:r[s]});break;case 253:this.$=o.addDataToNode(o,i[s-5],i[s])({source:r[s-4],guard:r[s-2],step:r[s]});break;case 254:this.$=o.addDataToNode(o,i[s-5],i[s])({source:r[s-4],step:r[s-2],guard:r[s]});break;case 255:this.$=o.addDataToNode(o,i[s-1],i[s])({source:r[s],from:!0});break;case 256:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],guard:r[s],from:!0});break;case 257:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Switch(r[s-3],r[s-1]));break;case 258:this.$=o.addDataToNode(o,i[s-6],i[s])(new o.Switch(r[s-5],r[s-3],r[s-1]));break;case 259:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Switch(null,r[s-1]));break;case 260:this.$=o.addDataToNode(o,i[s-5],i[s])(new o.Switch(null,r[s-3],r[s-1]));break;case 262:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s-1].concat(r[s]));break;case 263:this.$=o.addDataToNode(o,i[s-2],i[s])([[r[s-1],r[s]]]);break;case 264:this.$=o.addDataToNode(o,i[s-3],i[s])([[r[s-2],r[s-1]]]);break;case 265:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.If(r[s-1],r[s],{type:r[s-2]}));break;case 266:this.$=o.addDataToNode(o,i[s-4],i[s])(r[s-4].addElse(o.addDataToNode(o,i[s-2],i[s])(new o.If(r[s-1],r[s],{type:r[s-2]}))));break;case 268:this.$=o.addDataToNode(o,i[s-2],i[s])(r[s-2].addElse(r[s]));break;case 269:case 270:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.If(r[s],o.addDataToNode(o,i[s-2])(o.Block.wrap([r[s-2]])),{type:r[s-1],statement:!0}));break;case 273:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("-",r[s]));break;case 274:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("+",r[s]));break;case 276:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("--",r[s]));break;case 277:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("++",r[s]));break;case 278:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("--",r[s-1],null,!0));break;case 279:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("++",r[s-1],null,!0));break;case 280:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Existence(r[s-1]));break;case 281:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Op("+",r[s-2],r[s]));break;case 282:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Op("-",r[s-2],r[s]));break;case 283:case 284:case 285:case 286:case 287:case 288:case 289:case 290:case 291:case 292:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Op(r[s-1],r[s-2],r[s]));break;case 293:this.$=o.addDataToNode(o,i[s-2],i[s])(function(){return"!"===r[s-1].charAt(0)?new o.Op(r[s-1].slice(1),r[s-2],r[s]).invert():new o.Op(r[s-1],r[s-2],r[s])}());break;case 294:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Assign(r[s-2],r[s],r[s-1]));break;case 295:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Assign(r[s-4],r[s-1],r[s-3]));break;case 296:this.$=o.addDataToNode(o,i[s-3],i[s])(new 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55:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Assign(o.addDataToNode(o,i[s-4])(new o.Value(r[s-4])),r[s-1],"object",{operatorToken:o.addDataToNode(o,i[s-3])(new o.Literal(r[s-3]))}));break;case 56:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Assign(o.addDataToNode(o,i[s-2])(new o.Value(r[s-2])),r[s],null,{operatorToken:o.addDataToNode(o,i[s-1])(new o.Literal(r[s-1]))}));break;case 57:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Assign(o.addDataToNode(o,i[s-4])(new o.Value(r[s-4])),r[s-1],null,{operatorToken:o.addDataToNode(o,i[s-3])(new o.Literal(r[s-3]))}));break;case 63:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(new o.Value(r[s-1])));break;case 64:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(new o.Value(r[s])));break;case 65:case 106:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(r[s-1]));break;case 66:case 107:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Splat(r[s]));break;case 72:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.SuperCall(o.addDataToNode(o,i[s-1])(new o.Super),r[s],!1,r[s-1]));break;case 73:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Call(new o.Value(r[s-1]),r[s]));break;case 74:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Call(r[s-1],r[s]));break;case 75:case 76:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Value(r[s-1]).add(r[s]));break;case 77:case 124:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Access(r[s]));break;case 79:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Return(r[s]));break;case 80:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Return(new o.Value(r[s-1])));break;case 81:this.$=o.addDataToNode(o,i[s],i[s])(new o.Return);break;case 82:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.YieldReturn(r[s]));break;case 83:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.YieldReturn);break;case 84:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.AwaitReturn(r[s]));break;case 85:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.AwaitReturn);break;case 86:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Code(r[s-3],r[s],r[s-1]));break;case 87:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Code([],r[s],r[s-1]));break;case 88:case 89:this.$=o.addDataToNode(o,i[s],i[s])(new o.FuncGlyph(r[s]));break;case 92:case 135:this.$=o.addDataToNode(o,i[s],i[s])([]);break;case 93:case 136:case 155:case 175:case 204:case 247:this.$=o.addDataToNode(o,i[s],i[s])([r[s]]);break;case 94:case 137:case 156:case 176:case 205:this.$=o.addDataToNode(o,i[s-2],i[s])(r[s-2].concat(r[s]));break;case 95:case 138:case 157:case 177:case 206:this.$=o.addDataToNode(o,i[s-3],i[s])(r[s-3].concat(r[s]));break;case 96:case 139:case 159:case 179:case 208:this.$=o.addDataToNode(o,i[s-5],i[s])(r[s-5].concat(r[s-2]));break;case 97:this.$=o.addDataToNode(o,i[s],i[s])(new o.Param(r[s]));break;case 98:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Param(r[s-1],null,!0));break;case 99:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Param(r[s],null,!0));break;case 100:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Param(r[s-2],r[s]));break;case 101:case 211:this.$=o.addDataToNode(o,i[s],i[s])(new o.Expansion);break;case 109:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s-1].add(r[s]));break;case 110:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Value(r[s-1]).add(r[s]));break;case 122:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Super(o.addDataToNode(o,i[s])(new o.Access(r[s])),[],!1,r[s-2]));break;case 123:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Super(o.addDataToNode(o,i[s-1])(new o.Index(r[s-1])),[],!1,r[s-3]));break;case 125:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Access(r[s],"soak"));break;case 126:this.$=o.addDataToNode(o,i[s-1],i[s])([o.addDataToNode(o,i[s-1])(new o.Access(new o.PropertyName("prototype"))),o.addDataToNode(o,i[s])(new o.Access(r[s]))]);break;case 127:this.$=o.addDataToNode(o,i[s-1],i[s])([o.addDataToNode(o,i[s-1])(new o.Access(new o.PropertyName("prototype"),"soak")),o.addDataToNode(o,i[s])(new o.Access(r[s]))]);break;case 128:this.$=o.addDataToNode(o,i[s],i[s])(new o.Access(new o.PropertyName("prototype")));break;case 131:this.$=o.addDataToNode(o,i[s-1],i[s])(o.extend(r[s],{soak:!0}));break;case 132:this.$=o.addDataToNode(o,i[s],i[s])(new o.Index(r[s]));break;case 133:this.$=o.addDataToNode(o,i[s],i[s])(new o.Slice(r[s]));break;case 134:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Obj(r[s-2],r[s-3].generated));break;case 140:this.$=o.addDataToNode(o,i[s],i[s])(new o.Class);break;case 141:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Class(null,null,r[s]));break;case 142:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Class(null,r[s]));break;case 143:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Class(null,r[s-1],r[s]));break;case 144:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Class(r[s]));break;case 145:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Class(r[s-1],null,r[s]));break;case 146:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Class(r[s-2],r[s]));break;case 147:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Class(r[s-3],r[s-1],r[s]));break;case 148:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.ImportDeclaration(null,r[s]));break;case 149:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ImportDeclaration(new o.ImportClause(r[s-2],null),r[s]));break;case 150:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ImportDeclaration(new o.ImportClause(null,r[s-2]),r[s]));break;case 151:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.ImportDeclaration(new o.ImportClause(null,new o.ImportSpecifierList([])),r[s]));break;case 152:this.$=o.addDataToNode(o,i[s-6],i[s])(new o.ImportDeclaration(new o.ImportClause(null,new o.ImportSpecifierList(r[s-4])),r[s]));break;case 153:this.$=o.addDataToNode(o,i[s-5],i[s])(new o.ImportDeclaration(new o.ImportClause(r[s-4],r[s-2]),r[s]));break;case 154:this.$=o.addDataToNode(o,i[s-8],i[s])(new o.ImportDeclaration(new o.ImportClause(r[s-7],new o.ImportSpecifierList(r[s-4])),r[s]));break;case 158:case 178:case 191:case 207:this.$=o.addDataToNode(o,i[s-3],i[s])(r[s-2]);break;case 160:this.$=o.addDataToNode(o,i[s],i[s])(new o.ImportSpecifier(r[s]));break;case 161:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ImportSpecifier(r[s-2],r[s]));break;case 162:this.$=o.addDataToNode(o,i[s],i[s])(new o.ImportSpecifier(new o.Literal(r[s])));break;case 163:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ImportSpecifier(new o.Literal(r[s-2]),r[s]));break;case 164:this.$=o.addDataToNode(o,i[s],i[s])(new o.ImportDefaultSpecifier(r[s]));break;case 165:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ImportNamespaceSpecifier(new o.Literal(r[s-2]),r[s]));break;case 166:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportNamedDeclaration(new o.ExportSpecifierList([])));break;case 167:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.ExportNamedDeclaration(new o.ExportSpecifierList(r[s-2])));break;case 168:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.ExportNamedDeclaration(r[s]));break;case 169:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ExportNamedDeclaration(new o.Assign(r[s-2],r[s],null,{moduleDeclaration:"export"})));break;case 170:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.ExportNamedDeclaration(new o.Assign(r[s-3],r[s],null,{moduleDeclaration:"export"})));break;case 171:this.$=o.addDataToNode(o,i[s-5],i[s])(new o.ExportNamedDeclaration(new o.Assign(r[s-4],r[s-1],null,{moduleDeclaration:"export"})));break;case 172:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportDefaultDeclaration(r[s]));break;case 173:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.ExportAllDeclaration(new o.Literal(r[s-2]),r[s]));break;case 174:this.$=o.addDataToNode(o,i[s-6],i[s])(new o.ExportNamedDeclaration(new o.ExportSpecifierList(r[s-4]),r[s]));break;case 180:this.$=o.addDataToNode(o,i[s],i[s])(new o.ExportSpecifier(r[s]));break;case 181:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportSpecifier(r[s-2],r[s]));break;case 182:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportSpecifier(r[s-2],new o.Literal(r[s])));break;case 183:this.$=o.addDataToNode(o,i[s],i[s])(new o.ExportSpecifier(new o.Literal(r[s])));break;case 184:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.ExportSpecifier(new o.Literal(r[s-2]),r[s]));break;case 185:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.TaggedTemplateCall(r[s-2],r[s],r[s-1]));break;case 186:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Call(r[s-2],r[s],r[s-1]));break;case 187:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.SuperCall(o.addDataToNode(o,i[s-2])(new o.Super),r[s],r[s-1],r[s-2]));break;case 188:this.$=o.addDataToNode(o,i[s],i[s])(!1);break;case 189:this.$=o.addDataToNode(o,i[s],i[s])(!0);break;case 190:this.$=o.addDataToNode(o,i[s-1],i[s])([]);break;case 192:case 193:this.$=o.addDataToNode(o,i[s],i[s])(new o.Value(new o.ThisLiteral(r[s])));break;case 194:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Value(o.addDataToNode(o,i[s-1])(new o.ThisLiteral(r[s-1])),[o.addDataToNode(o,i[s])(new o.Access(r[s]))],"this"));break;case 195:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Arr([]));break;case 196:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Arr(r[s-2]));break;case 197:this.$=o.addDataToNode(o,i[s],i[s])("inclusive");break;case 198:this.$=o.addDataToNode(o,i[s],i[s])("exclusive");break;case 199:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Range(r[s-3],r[s-1],r[s-2]));break;case 200:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Range(r[s-2],r[s],r[s-1]));break;case 201:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Range(r[s-1],null,r[s]));break;case 202:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Range(null,r[s],r[s-1]));break;case 203:this.$=o.addDataToNode(o,i[s],i[s])(new o.Range(null,null,r[s]));break;case 213:this.$=o.addDataToNode(o,i[s-2],i[s])([].concat(r[s-2],r[s]));break;case 214:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Try(r[s]));break;case 215:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Try(r[s-1],r[s][0],r[s][1]));break;case 216:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Try(r[s-2],null,null,r[s]));break;case 217:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Try(r[s-3],r[s-2][0],r[s-2][1],r[s]));break;case 218:this.$=o.addDataToNode(o,i[s-2],i[s])([r[s-1],r[s]]);break;case 219:this.$=o.addDataToNode(o,i[s-2],i[s])([o.addDataToNode(o,i[s-1])(new o.Value(r[s-1])),r[s]]);break;case 220:this.$=o.addDataToNode(o,i[s-1],i[s])([null,r[s]]);break;case 221:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Throw(r[s]));break;case 222:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Throw(new o.Value(r[s-1])));break;case 223:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Parens(r[s-1]));break;case 224:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Parens(r[s-2]));break;case 225:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(r[s]));break;case 226:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.While(r[s-2],{guard:r[s]}));break;case 227:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(r[s],{invert:!0}));break;case 228:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.While(r[s-2],{invert:!0,guard:r[s]}));break;case 229:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s-1].addBody(r[s]));break;case 230:case 231:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s].addBody(o.addDataToNode(o,i[s-1])(o.Block.wrap([r[s-1]]))));break;case 232:this.$=o.addDataToNode(o,i[s],i[s])(r[s]);break;case 233:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(o.addDataToNode(o,i[s-1])(new o.BooleanLiteral("true"))).addBody(r[s]));break;case 234:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.While(o.addDataToNode(o,i[s-1])(new o.BooleanLiteral("true"))).addBody(o.addDataToNode(o,i[s])(o.Block.wrap([r[s]]))));break;case 235:case 236:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.For(r[s-1],r[s]));break;case 237:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.For(r[s],r[s-1]));break;case 238:this.$=o.addDataToNode(o,i[s-1],i[s])({source:o.addDataToNode(o,i[s])(new o.Value(r[s]))});break;case 239:this.$=o.addDataToNode(o,i[s-3],i[s])({source:o.addDataToNode(o,i[s-2])(new o.Value(r[s-2])),step:r[s]});break;case 240:this.$=o.addDataToNode(o,i[s-1],i[s])(function(){return r[s].own=r[s-1].own,r[s].ownTag=r[s-1].ownTag,r[s].name=r[s-1][0],r[s].index=r[s-1][1],r[s]}());break;case 241:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s]);break;case 242:this.$=o.addDataToNode(o,i[s-2],i[s])(function(){return r[s].own=!0,r[s].ownTag=o.addDataToNode(o,i[s-1])(new o.Literal(r[s-1])),r[s]}());break;case 248:this.$=o.addDataToNode(o,i[s-2],i[s])([r[s-2],r[s]]);break;case 249:this.$=o.addDataToNode(o,i[s-1],i[s])({source:r[s]});break;case 250:this.$=o.addDataToNode(o,i[s-1],i[s])({source:r[s],object:!0});break;case 251:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],guard:r[s]});break;case 252:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],guard:r[s],object:!0});break;case 253:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],step:r[s]});break;case 254:this.$=o.addDataToNode(o,i[s-5],i[s])({source:r[s-4],guard:r[s-2],step:r[s]});break;case 255:this.$=o.addDataToNode(o,i[s-5],i[s])({source:r[s-4],step:r[s-2],guard:r[s]});break;case 256:this.$=o.addDataToNode(o,i[s-1],i[s])({source:r[s],from:!0});break;case 257:this.$=o.addDataToNode(o,i[s-3],i[s])({source:r[s-2],guard:r[s],from:!0});break;case 258:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Switch(r[s-3],r[s-1]));break;case 259:this.$=o.addDataToNode(o,i[s-6],i[s])(new o.Switch(r[s-5],r[s-3],r[s-1]));break;case 260:this.$=o.addDataToNode(o,i[s-3],i[s])(new o.Switch(null,r[s-1]));break;case 261:this.$=o.addDataToNode(o,i[s-5],i[s])(new o.Switch(null,r[s-3],r[s-1]));break;case 263:this.$=o.addDataToNode(o,i[s-1],i[s])(r[s-1].concat(r[s]));break;case 264:this.$=o.addDataToNode(o,i[s-2],i[s])([[r[s-1],r[s]]]);break;case 265:this.$=o.addDataToNode(o,i[s-3],i[s])([[r[s-2],r[s-1]]]);break;case 266:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.If(r[s-1],r[s],{type:r[s-2]}));break;case 267:this.$=o.addDataToNode(o,i[s-4],i[s])(r[s-4].addElse(o.addDataToNode(o,i[s-2],i[s])(new o.If(r[s-1],r[s],{type:r[s-2]}))));break;case 269:this.$=o.addDataToNode(o,i[s-2],i[s])(r[s-2].addElse(r[s]));break;case 270:case 271:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.If(r[s],o.addDataToNode(o,i[s-2])(o.Block.wrap([r[s-2]])),{type:r[s-1],statement:!0}));break;case 274:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("-",r[s]));break;case 275:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("+",r[s]));break;case 277:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("--",r[s]));break;case 278:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("++",r[s]));break;case 279:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("--",r[s-1],null,!0));break;case 280:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Op("++",r[s-1],null,!0));break;case 281:this.$=o.addDataToNode(o,i[s-1],i[s])(new o.Existence(r[s-1]));break;case 282:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Op("+",r[s-2],r[s]));break;case 283:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Op("-",r[s-2],r[s]));break;case 284:case 285:case 286:case 287:case 288:case 289:case 290:case 291:case 292:case 293:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Op(r[s-1],r[s-2],r[s]));break;case 294:this.$=o.addDataToNode(o,i[s-2],i[s])(function(){return"!"===r[s-1].charAt(0)?new o.Op(r[s-1].slice(1),r[s-2],r[s]).invert():new o.Op(r[s-1],r[s-2],r[s])}());break;case 295:this.$=o.addDataToNode(o,i[s-2],i[s])(new o.Assign(r[s-2],r[s],r[s-1]));break;case 296:this.$=o.addDataToNode(o,i[s-4],i[s])(new o.Assign(r[s-4],r[s-1],r[s-3]));break;case 297:this.$=o.addDataToNode(o,i[s-3],i[s])(new 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diff --git a/docs/v2/index.html b/docs/v2/index.html
index a65f43c740..397a7e15ca 100644
--- a/docs/v2/index.html
+++ b/docs/v2/index.html
@@ -13,7 +13,7 @@
 <link rel="mask-icon" href="/safari-pinned-tab.svg" color="#5bbad5">
 <meta name="theme-color" content="#ffffff">
 
-<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.5/css/bootstrap.min.css" integrity="sha384-AysaV+vQoT3kOAXZkl02PThvDr8HYKPZhNT5h/CXfBThSRXQ6jW5DO2ekP5ViFdi" crossorigin="anonymous">
+<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
 <!-- The CoffeeScript logo font is Google’s Galada -->
 <link href="https://fonts.googleapis.com/css?family=Alegreya+Sans:400,800|Lato:300,300i,400,700|Roboto+Mono:400,400i" rel="stylesheet" crossorigin="anonymous">
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/codemirror/4.5.0/codemirror.css" crossorigin="anonymous">
@@ -47,7 +47,12 @@
   text-decoration: none;
 }
 
-.bg-inverse {
+button:focus, .navbar-dark .navbar-toggler:focus {
+  outline: none;
+  border: thin solid rgba(248, 243, 240, 0.3);
+}
+
+.bg-dark {
   background-color: #3e2723 !important;
 }
 
@@ -64,92 +69,35 @@
 /*
  * Header
  */
-.navbar-fixed-top {
+.site-navbar {
   height: 3.5rem;
+  font-family: Lato;
+  font-weight: 400;
+  font-size: 1.1em;
 }
 
 .navbar-brand {
-  height: 2em;
-  margin-right: 2em;
+  height: 2.2em;
+  margin-right: 1em;
 }
 
 .navbar-dark path {
   fill: #fff;
 }
 
-.navbar-nav {
-  font-family: Lato;
-  font-weight: 400;
-  font-size: 1.1em;
-}
-
-.navbar-nav .nav-link {
-  padding-left: 0.6em;
-  padding-right: 0.6em;
+.navbar-nav .nav-item {
+  margin-left: 0.6em;
+  margin-right: 0.6em;
   border-radius: 0.4em;
 }
-.navbar-nav .nav-link:hover,
-.navbar-nav .nav-link:active,
-.navbar-nav .nav-link.active {
+.navbar-nav .nav-item:hover,
+.navbar-nav .nav-item:active,
+.navbar-nav .nav-item.show {
   background-color: #4e342e;
 }
 
-/* Adapted from https://codepen.io/GeoffreyBooth/pen/QGzwYK */
-.navbar-menu-button,
-.navbar-menu-button:focus {
-  float: right;
-  width: 2.3em;
-  padding: 0;
-  margin-top: 0.25em;
-  background: transparent;
-  border: 0;
-  outline: 0;
-}
-.menu-button {
-  width: 2em;
-  height: 1.5em;
-  position: relative;
-  transform: rotate(0deg);
-  transition: .25s ease-in-out;
-  cursor: pointer;
-}
-.menu-button span {
-  display: block;
-  position: absolute;
-  height: 4px;
-  width: 100%;
-  background: #efebe9;
-  border-radius: 4px;
-  opacity: 1;
-  left: 0;
-  transform: rotate(0deg);
-  transition: .25s ease-in-out;
-}
-.menu-button span:nth-child(1) {
-  top: 0;
-}
-.menu-button span:nth-child(2),
-.menu-button span:nth-child(3) {
-  top: 0.7em;
-}
-.menu-button span:nth-child(4) {
-  top: 1.4em;
-}
-.menu-button.active span:nth-child(1) {
-  top: 0.7em;
-  width: 0%;
-  left: 50%;
-}
-.menu-button.active span:nth-child(2) {
-  transform: rotate(45deg);
-}
-.menu-button.active span:nth-child(3) {
-  transform: rotate(-45deg);
-}
-.menu-button.active span:nth-child(4) {
-  top: 0.7em;
-  width: 0%;
-  left: 50%;
+.navbar-toggler {
+  transition: all 0.1s ease-in-out;
 }
 
 
@@ -172,40 +120,44 @@
   /* Scrollable contents if viewport is shorter than content */
   overflow-y: auto;
   overflow-x: hidden;
+  padding: 0.5em 0 0.5em 0.3em;
   font-family: 'Alegreya Sans';
   font-weight: 400;
   font-size: 1.2em;
-  line-height: 2;
+  align-items: normal;
+}
+.sidebar .contents::-webkit-scrollbar {
+  display: none;
 }
 @media screen and (max-width: 991px) {
   .sidebar .contents {
     position: fixed;
     height: calc(100% - 3.5rem);
-    padding: 1em 1.6em;
   }
 }
 @media screen and (min-width: 992px) {
   .sidebar {
     position: fixed;
   }
-  .sidebar .contents {
-    padding: 1.3em;
-  }
-  .sidebar .contents::-webkit-scrollbar {
-    display: none;
-  }
 }
 
-.sidebar .nav-link.active,
-.sidebar .nav-link.active a:hover,
-.sidebar .nav-link.active a:focus {
-  font-weight: 800;
+.contents-column {
+  display: block;
 }
 
-.nav .nav {
+.contents .nav .nav {
   margin-left: 1em;
   font-size: 0.9em;
-  line-height: 1.7;
+}
+
+.contents .nav-link {
+  padding: 0.2em 0.7em;
+}
+
+.contents .nav-link.active,
+.contents .nav-link.active a:hover,
+.contents .nav-link.active a:focus {
+  font-weight: 800;
 }
 
 
@@ -229,7 +181,7 @@
   .row-offcanvas-left .sidebar-offcanvas {
     left: -100%;
   }
-  .row-offcanvas-left.active {
+  .row-offcanvas-left.show {
     left: calc(100% + 30px)
   }
 }
@@ -238,7 +190,7 @@
     left: calc(-66.667% - 15px);
     width: 66.667%;
   }
-  .row-offcanvas-left.active {
+  .row-offcanvas-left.show {
     left: calc(66.667% + 30px);
   }
   .row-offcanvas-left .sidebar-offcanvas .contents {
@@ -271,8 +223,19 @@
 
 .main p, .main li, .main td, .main th {
   font-family: Lato;
-  font-size: 1.3rem;
   font-weight: 300;
+  font-size: 1.1em;
+}
+.main blockquote {
+  font-size: 1.1em;
+}
+@media (min-width: 768px) {
+  .main p, .main li, .main td, .main th {
+    font-size: 1.3em;
+  }
+  .main blockquote {
+    font-size: 1.3em;
+  }
 }
 .main td {
   vertical-align: top;
@@ -288,9 +251,6 @@
 .main a:focus, .main a:hover, .main a:active {
   border-bottom: 2px solid rgba(56, 142, 60, 0.2);
 }
-.main blockquote {
-  font-size: 1.3rem;
-}
 .main blockquote pre {
   background-color: #f8f3f0;
   color: #2f2625;
@@ -328,8 +288,11 @@
   font-family: 'Roboto Mono';
   font-weight: 400;
 }
-code {
+code, a > code {
   background-color: #f8f3f0;
+  padding: 0.2rem 0.4rem;
+}
+code {
   color: #2f2625;
 }
 
@@ -375,7 +338,18 @@
   font-family: 'Roboto Mono';
   font-weight: 400;
   line-height: 1.25;
+  font-size: 0.9em;
+}
+@media (min-width: 768px) {
+  .CodeMirror {
+    font-size: 1em;
+  }
 }
+
+.CodeMirror-code:focus {
+  outline: none;
+}
+
 .javascript-output-column .CodeMirror-cursor {
   /* https://github.com/codemirror/CodeMirror/issues/2568 */
   display: none;
@@ -393,7 +367,7 @@
   opacity: 0;
   transition: opacity 0.15s ease-in-out;
 }
-.try-coffeescript.active {
+.try-coffeescript.show {
   opacity: 1;
   z-index: 1001;
 }
@@ -516,7 +490,7 @@
 </head>
 <body>
 
-<nav class="navbar navbar-dark navbar-fixed-top bg-inverse bg-ribbed-dark">
+<nav class="navbar navbar-expand-lg fixed-top navbar-dark bg-dark bg-ribbed-dark site-navbar">
   <a class="navbar-brand" href="#" data-close="try"><svg xmlns="http://www.w3.org/2000/svg" viewBox="-22 347 566 100">
 	<title>
 		CoffeeScript Logo
@@ -524,20 +498,18 @@
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 </svg>
 </a>
-  <nav class="nav navbar-nav float-xs-left hidden-md-down">
-    <a href="#try" id="try-link" class="nav-item nav-link" data-toggle="try">Try CoffeeScript</a>
-    <a href="#language" class="nav-item nav-link" data-close="try">Language Reference</a>
-    <a href="#resources" class="nav-item nav-link" data-close="try">Resources</a>
-    <a href="http://github.com/jashkenas/coffeescript/" class="nav-item nav-link" data-close="try">GitHub</a>
-  </nav>
-  <button type="button" class="navbar-menu-button hidden-lg-up" data-toggle="offcanvas" aria-label="Toggle sidebar">
-    <div class="menu-button">
-      <span></span>
-      <span></span>
-      <span></span>
-      <span></span>
-    </div>
+  <button class="navbar-toggler" type="button" data-toggle="offcanvas" data-close="try" aria-label="Toggle sidebar">
+    <span class="navbar-toggler-icon"></span>
   </button>
+
+  <nav class="collapse navbar-collapse">
+    <ul class="navbar-nav mr-auto d-none d-lg-flex">
+      <a href="#try" id="try-link" class="nav-item nav-link" data-toggle="try">Try CoffeeScript</a>
+      <a href="#language" class="nav-item nav-link" data-close="try">Language Reference</a>
+      <a href="#resources" class="nav-item nav-link" data-close="try">Resources</a>
+      <a href="http://github.com/jashkenas/coffeescript/" class="nav-item nav-link" data-close="try">GitHub
+        </a>
+  </nav>
 </nav>
 
 
@@ -551,7 +523,7 @@
     </div>
   </div>
   <div class="row">
-    <div class="col-xs-12 text-xs-right try-buttons">
+    <div class="col text-right try-buttons">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="try-coffeescript" data-run="true">▶</button>&emsp;
     </div>
   </div>
@@ -561,211 +533,89 @@
 <div class="container-fluid" id="top">
   <div class="row row-offcanvas row-offcanvas-left">
     <nav class="sidebar sidebar-offcanvas col-xs-12 col-lg-3 bg-ribbed-light">
-      <nav class="contents" id="contents">
-  <ul class="nav">
-    <li class="nav-item">
-      <a href="#top" class="nav-link" data-action="sidebar-nav">Overview</a>
-    </li>
-    <li class="nav-item">
-      <a href="#coffeescript-2" class="nav-link" data-action="sidebar-nav">CoffeeScript 2</a>
-    </li>
-    <li class="nav-item">
-      <a href="#installation" class="nav-link" data-action="sidebar-nav">Installation</a>
-    </li>
-    <li class="nav-item">
-      <a href="#usage" class="nav-link" data-action="sidebar-nav">Usage</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#cli" class="nav-link" data-action="sidebar-nav">Command Line</a>
-        </li>
-        <li class="nav-item">
-          <a href="#es2015plus-output" class="nav-link" data-action="sidebar-nav">ES2015+ Output</a>
-        </li>
-        <li class="nav-item">
-          <a href="#nodejs-usage" class="nav-link" data-action="sidebar-nav">Node.js</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#language" class="nav-link" data-action="sidebar-nav">Language Reference</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#functions" class="nav-link" data-action="sidebar-nav">Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#strings" class="nav-link" data-action="sidebar-nav">Strings</a>
-        </li>
-        <li class="nav-item">
-          <a href="#objects-and-arrays" class="nav-link" data-action="sidebar-nav">Objects and Arrays</a>
-        </li>
-        <li class="nav-item">
-          <a href="#comments" class="nav-link" data-action="sidebar-nav">Comments</a>
-        </li>
-        <li class="nav-item">
-          <a href="#lexical-scope" class="nav-link" data-action="sidebar-nav">Lexical Scoping and Variable Safety</a>
-        </li>
-        <li class="nav-item">
-          <a href="#conditionals" class="nav-link" data-action="sidebar-nav">If, Else, Unless, and Conditional Assignment</a>
-        </li>
-        <li class="nav-item">
-          <a href="#splats" class="nav-link" data-action="sidebar-nav">Splats, or Rest Parameters/Spread Syntax</a>
-        </li>
-        <li class="nav-item">
-          <a href="#loops" class="nav-link" data-action="sidebar-nav">Loops and Comprehensions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#slices" class="nav-link" data-action="sidebar-nav">Array Slicing and Splicing</a>
-        </li>
-        <li class="nav-item">
-          <a href="#expressions" class="nav-link" data-action="sidebar-nav">Everything is an Expression</a>
-        </li>
-        <li class="nav-item">
-          <a href="#operators" class="nav-link" data-action="sidebar-nav">Operators and Aliases</a>
-        </li>
-        <li class="nav-item">
-          <a href="#existential-operator" class="nav-link" data-action="sidebar-nav">Existential Operator</a>
-        </li>
-        <li class="nav-item">
-          <a href="#destructuring" class="nav-link" data-action="sidebar-nav">Destructuring Assignment</a>
-        </li>
-        <li class="nav-item">
-          <a href="#chaining" class="nav-link" data-action="sidebar-nav">Chaining Function Calls</a>
-        </li>
-        <li class="nav-item">
-          <a href="#fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#generators" class="nav-link" data-action="sidebar-nav">Generator Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#async-functions" class="nav-link" data-action="sidebar-nav">Async Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#classes" class="nav-link" data-action="sidebar-nav">Classes</a>
-        </li>
-        <li class="nav-item">
-          <a href="#prototypal-inheritance" class="nav-link" data-action="sidebar-nav">Prototypal Inheritance</a>
-        </li>
-        <li class="nav-item">
-          <a href="#switch" class="nav-link" data-action="sidebar-nav">Switch and Try/Catch</a>
-        </li>
-        <li class="nav-item">
-          <a href="#comparisons" class="nav-link" data-action="sidebar-nav">Chained Comparisons</a>
-        </li>
-        <li class="nav-item">
-          <a href="#regexes" class="nav-link" data-action="sidebar-nav">Block Regular Expressions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#tagged-template-literals" class="nav-link" data-action="sidebar-nav">Tagged Template Literals</a>
-        </li>
-        <li class="nav-item">
-          <a href="#modules" class="nav-link" data-action="sidebar-nav">Modules</a>
-        </li>
-        <li class="nav-item">
-          <a href="#embedded" class="nav-link" data-action="sidebar-nav">Embedded JavaScript</a>
-        </li>
-        <li class="nav-item">
-          <a href="#jsx" class="nav-link" data-action="sidebar-nav">JSX</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#type-annotations" class="nav-link" data-action="sidebar-nav">Type Annotations</a>
-    </li>
-    <li class="nav-item">
-      <a href="#literate" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript</a>
-    </li>
-    <li class="nav-item">
-      <a href="#source-maps" class="nav-link" data-action="sidebar-nav">Source Maps</a>
-    </li>
-    <li class="nav-item">
-      <a href="#cake" class="nav-link" data-action="sidebar-nav">Cake, and Cakefiles</a>
-    </li>
-    <li class="nav-item">
-      <a href="#scripts" class="nav-link" data-action="sidebar-nav"><code>"text/coffeescript"</code> Script Tags</a>
-    </li>
-    <li class="nav-item">
-      <a href="test.html" class="nav-link" data-action="sidebar-nav">Browser-Based Tests</a>
-    </li>
-    <li class="nav-item">
-      <a href="#resources" class="nav-link" data-action="sidebar-nav">Resources</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#books" class="nav-link" data-action="sidebar-nav">Books</a>
-        </li>
-        <li class="nav-item">
-          <a href="#screencasts" class="nav-link" data-action="sidebar-nav">Screencasts</a>
-        </li>
-        <li class="nav-item">
-          <a href="#examples" class="nav-link" data-action="sidebar-nav">Examples</a>
-        </li>
-        <li class="nav-item">
-          <a href="#chat" class="nav-link" data-action="sidebar-nav">Chat</a>
-        </li>
-        <li class="nav-item">
-          <a href="#annotated-source" class="nav-link" data-action="sidebar-nav">Annotated Source</a>
-        </li>
-        <li class="nav-item">
-          <a href="#contributing" class="nav-link" data-action="sidebar-nav">Contributing</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#unsupported" class="nav-link" data-action="sidebar-nav">Unsupported ECMAScript Features</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#unsupported-let-const" class="nav-link" data-action="sidebar-nav"><code>let</code> and <code>const</code></a>
-        </li>
-        <li class="nav-item">
-          <a href="#unsupported-named-functions" class="nav-link" data-action="sidebar-nav">Named Functions and Function Declarations</a>
-        </li>
-        <li class="nav-item">
-          <a href="#unsupported-get-set" class="nav-link" data-action="sidebar-nav"><code>get</code> and <code>set</code> Shorthand Syntax</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#breaking-changes" class="nav-link" data-action="sidebar-nav">Breaking Changes From 1.x</a>
-      <ul class="nav">
-        <li class="nav-item">
-          <a href="#breaking-change-fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-default-values" class="nav-link" data-action="sidebar-nav">Default Values</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-bound-generator-functions" class="nav-link" data-action="sidebar-nav">Bound Generator Functions</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-classes" class="nav-link" data-action="sidebar-nav">Classes</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-super-extends" class="nav-link" data-action="sidebar-nav"><code>super</code> and <code>extends</code></a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-jsx-and-the-less-than-and-greater-than-operators" class="nav-link" data-action="sidebar-nav">JSX and the <code>&lt;</code> and <code>&gt;</code> Operators</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-literate-coffeescript" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript Parsing</a>
-        </li>
-        <li class="nav-item">
-          <a href="#breaking-changes-argument-parsing-and-shebang-lines" class="nav-link" data-action="sidebar-nav">Argument Parsing and <code>#!</code> Lines</a>
-        </li>
-      </ul>
-    </li>
-    <li class="nav-item">
-      <a href="#changelog" class="nav-link" data-action="sidebar-nav">Changelog</a>
-    </li>
-    <li class="nav-item">
-      <a href="/v1/" class="nav-link" data-action="sidebar-nav">Version 1.x Documentation</a>
-    </li>
-  </ul>
+      <nav id="contents" class="navbar contents">
+  <nav class="nav flex-column contents-column">
+    <a href="#try" class="nav-link d-md-none" data-action="sidebar-nav" data-toggle="try">Try CoffeeScript</a>
+    <a href="#top" class="nav-link" data-action="sidebar-nav">Overview</a>
+    <a href="#coffeescript-2" class="nav-link" data-action="sidebar-nav">CoffeeScript 2</a>
+    <a href="#installation" class="nav-link" data-action="sidebar-nav">Installation</a>
+    <a href="#usage" class="nav-link" data-action="sidebar-nav">Usage</a>
+    <nav class="nav flex-column">
+      <a href="#cli" class="nav-link" data-action="sidebar-nav">Command Line</a>
+      <a href="#es2015plus-output" class="nav-link" data-action="sidebar-nav">ES2015+ Output</a>
+      <a href="#nodejs-usage" class="nav-link" data-action="sidebar-nav">Node.js</a>
+    </nav>
+    <a href="#language" class="nav-link" data-action="sidebar-nav">Language Reference</a>
+      <nav class="nav flex-column">
+        <a href="#functions" class="nav-link" data-action="sidebar-nav">Functions</a>
+        <a href="#strings" class="nav-link" data-action="sidebar-nav">Strings</a>
+        <a href="#objects-and-arrays" class="nav-link" data-action="sidebar-nav">Objects and Arrays</a>
+        <a href="#comments" class="nav-link" data-action="sidebar-nav">Comments</a>
+        <a href="#lexical-scope" class="nav-link" data-action="sidebar-nav">Lexical Scoping and Variable Safety</a>
+        <a href="#conditionals" class="nav-link" data-action="sidebar-nav">If, Else, Unless, and Conditional Assignment</a>
+        <a href="#splats" class="nav-link" data-action="sidebar-nav">Splats, or Rest Parameters/Spread Syntax</a>
+        <a href="#loops" class="nav-link" data-action="sidebar-nav">Loops and Comprehensions</a>
+        <a href="#slices" class="nav-link" data-action="sidebar-nav">Array Slicing and Splicing</a>
+        <a href="#expressions" class="nav-link" data-action="sidebar-nav">Everything is an Expression</a>
+        <a href="#operators" class="nav-link" data-action="sidebar-nav">Operators and Aliases</a>
+        <a href="#existential-operator" class="nav-link" data-action="sidebar-nav">Existential Operator</a>
+        <a href="#destructuring" class="nav-link" data-action="sidebar-nav">Destructuring Assignment</a>
+        <a href="#chaining" class="nav-link" data-action="sidebar-nav">Chaining Function Calls</a>
+        <a href="#fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
+        <a href="#generators" class="nav-link" data-action="sidebar-nav">Generator Functions</a>
+        <a href="#async-functions" class="nav-link" data-action="sidebar-nav">Async Functions</a>
+        <a href="#classes" class="nav-link" data-action="sidebar-nav">Classes</a>
+        <a href="#prototypal-inheritance" class="nav-link" data-action="sidebar-nav">Prototypal Inheritance</a>
+        <a href="#switch" class="nav-link" data-action="sidebar-nav">Switch and Try/Catch</a>
+        <a href="#comparisons" class="nav-link" data-action="sidebar-nav">Chained Comparisons</a>
+        <a href="#regexes" class="nav-link" data-action="sidebar-nav">Block Regular Expressions</a>
+        <a href="#tagged-template-literals" class="nav-link" data-action="sidebar-nav">Tagged Template Literals</a>
+        <a href="#modules" class="nav-link" data-action="sidebar-nav">Modules</a>
+        <a href="#embedded" class="nav-link" data-action="sidebar-nav">Embedded JavaScript</a>
+        <a href="#jsx" class="nav-link" data-action="sidebar-nav">JSX</a>
+      </nav>
+    <a href="#type-annotations" class="nav-link" data-action="sidebar-nav">Type Annotations</a>
+    <a href="#literate" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript</a>
+    <a href="#source-maps" class="nav-link" data-action="sidebar-nav">Source Maps</a>
+    <a href="#cake" class="nav-link" data-action="sidebar-nav">Cake, and Cakefiles</a>
+    <a href="#scripts" class="nav-link" data-action="sidebar-nav"><code>"text/coffeescript"</code> Script Tags</a>
+    <a href="test.html" class="nav-link" data-action="sidebar-nav">Browser-Based Tests</a>
+    <a href="#resources" class="nav-link" data-action="sidebar-nav">Resources</a>
+      <nav class="nav flex-column">
+        <a href="#books" class="nav-link" data-action="sidebar-nav">Books</a>
+        <a href="#screencasts" class="nav-link" data-action="sidebar-nav">Screencasts</a>
+        <a href="#examples" class="nav-link" data-action="sidebar-nav">Examples</a>
+        <a href="#chat" class="nav-link" data-action="sidebar-nav">Chat</a>
+        <a href="#annotated-source" class="nav-link" data-action="sidebar-nav">Annotated Source</a>
+        <a href="#contributing" class="nav-link" data-action="sidebar-nav">Contributing</a>
+      </nav>
+    <a href="http://github.com/jashkenas/coffeescript/" class="nav-item nav-link d-md-none" data-action="sidebar-nav">GitHub</a>
+    <a href="#unsupported" class="nav-link" data-action="sidebar-nav">Unsupported ECMAScript Features</a>
+      <nav class="nav flex-column">
+        <a href="#unsupported-let-const" class="nav-link" data-action="sidebar-nav"><code>let</code> and <code>const</code></a>
+        <a href="#unsupported-named-functions" class="nav-link" data-action="sidebar-nav">Named Functions and Function Declarations</a>
+        <a href="#unsupported-get-set" class="nav-link" data-action="sidebar-nav"><code>get</code> and <code>set</code> Shorthand Syntax</a>
+      </nav>
+    <a href="#breaking-changes" class="nav-link" data-action="sidebar-nav">Breaking Changes From 1.x</a>
+      <nav class="nav flex-column">
+        <a href="#breaking-change-fat-arrow" class="nav-link" data-action="sidebar-nav">Bound (Fat Arrow) Functions</a>
+        <a href="#breaking-changes-default-values" class="nav-link" data-action="sidebar-nav">Default Values</a>
+        <a href="#breaking-changes-bound-generator-functions" class="nav-link" data-action="sidebar-nav">Bound Generator Functions</a>
+        <a href="#breaking-changes-classes" class="nav-link" data-action="sidebar-nav">Classes</a>
+        <a href="#breaking-changes-super-extends" class="nav-link" data-action="sidebar-nav"><code>super</code> and <code>extends</code></a>
+        <a href="#breaking-changes-jsx-and-the-less-than-and-greater-than-operators" class="nav-link" data-action="sidebar-nav">JSX and the <code>&lt;</code> and <code>&gt;</code> Operators</a>
+        <a href="#breaking-changes-literate-coffeescript" class="nav-link" data-action="sidebar-nav">Literate CoffeeScript Parsing</a>
+        <a href="#breaking-changes-argument-parsing-and-shebang-lines" class="nav-link" data-action="sidebar-nav">Argument Parsing and <code>#!</code> Lines</a>
+      </nav>
+    <a href="#changelog" class="nav-link" data-action="sidebar-nav">Changelog</a>
+    <a href="/v1/" class="nav-link" data-action="sidebar-nav">Version 1.x Documentation</a>
+  </nav>
 </nav>
 
     </nav>
-    <main class="main col-xs-12 col-lg-9 offset-lg-3">
+    <main class="main col-lg-9 ml-auto">
 
-      <header class="title-logo hidden-md-down">
+      <header class="title-logo d-none d-lg-block">
         <svg xmlns="http://www.w3.org/2000/svg" viewBox="-22 347 566 100">
 	<title>
 		CoffeeScript Logo
@@ -778,12 +628,12 @@
       <section id="overview">
         <p><strong>CoffeeScript is a little language that compiles into JavaScript.</strong> Underneath that awkward Java-esque patina, JavaScript has always had a gorgeous heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way.</p>
 <p>The golden rule of CoffeeScript is: <em>“It’s just JavaScript.”</em> The code compiles one-to-one into the equivalent JS, and there is no interpretation at runtime. You can use any existing JavaScript library seamlessly from CoffeeScript (and vice-versa). The compiled output is readable, pretty-printed, and tends to run as fast or faster than the equivalent handwritten JavaScript.</p>
-<p><strong>Latest Version:</strong> <a href="https://github.com/jashkenas/coffeescript/tarball/2.0.0-beta4">2.0.0-beta4</a></p>
+<p><strong>Latest Version:</strong> <a href="https://github.com/jashkenas/coffeescript/tarball/2.0.0-beta5">2.0.0-beta5</a></p>
 <blockquote class="uneditable-code-block"><pre><code class="language-bash">npm install -g coffeescript@next
 </code></pre>
 </blockquote>
         <h2>Overview</h2>
-<p><em>CoffeeScript on the <span class="hidden-md-up">top</span><span class="hidden-sm-down">left</span>, compiled JavaScript output on the <span class="hidden-md-up">bottom</span><span class="hidden-sm-down">right</span>. The CoffeeScript is editable!</em></p>
+<p><em>CoffeeScript on the <span class="d-md-none">top</span><span class="d-none d-md-inline">left</span>, compiled JavaScript output on the <span class="d-md-none">bottom</span><span class="d-none d-md-inline">right</span>. The CoffeeScript is editable!</em></p>
 <aside class="code-example container-fluid bg-ribbed-dark" data-example="overview">
   <div class="row">
     <div class="col-md-6 coffeescript-input-column">
@@ -872,7 +722,7 @@ <h2>Overview</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="overview" data-run="cubes"><small>▶</small>&ensp;cubes</button>
     </div>
   </div>
@@ -1011,7 +861,8 @@ <h3>ES2015+ Output</h3>
 npm install --save-dev coffeescript@next babel-cli babel-preset-env
 coffee --<span class="built_in">print</span> *.coffee | babel --presets env &gt; app.js
 </code></pre>
-</blockquote>
+</blockquote><p>Note that <a href="https://babeljs.io/docs/plugins/preset-env/">babel-preset-env</a> doesn’t automatically supply polyfills for your code. CoffeeScript itself will output <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf"><code>Array.indexOf</code></a> if you use the <code>in</code> operator, or destructuring or spread/rest syntax; and <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind"><code>Function.bind</code></a> if you use a bound (<code>=&gt;</code>) method in a class. Both are supported in Internet Explorer 9+ and all more recent browsers, but you will need to supply polyfills if you need to support Internet Explorer 8 or below and are using features that would cause these methods to be output, or in your own code are using similarly modern methods. One option is <a href="https://babeljs.io/docs/usage/polyfill/"><code>babel-polyfill</code></a>, though there are many <a href="https://hackernoon.com/polyfills-everything-you-ever-wanted-to-know-or-maybe-a-bit-less-7c8de164e423">other</a> <a href="https://philipwalton.com/articles/loading-polyfills-only-when-needed/">strategies</a>.</p>
+
         </section>
         <section id="nodejs-usage">
           <h3>Node.js</h3>
@@ -1029,7 +880,7 @@ <h3>Node.js</h3>
 <ul>
 <li><code>options.sourceMap</code>, boolean: if true, a source map will be generated; and instead of returning a string, <code>compile</code> will return an object of the form <code>{js, v3SourceMap, sourceMap}</code>.</li>
 <li><code>options.inlineMap</code>, boolean: if true, output the source map as a base64-encoded string in a comment at the bottom.</li>
-<li><code>options.filename</code>, string: the filename to use for the source map.</li>
+<li><code>options.filename</code>, string: the filename to use for the source map. It can include a path (relative or absolute).</li>
 <li><code>options.bare</code>, boolean: if true, output without the <a href="#lexical-scope">top-level function safety wrapper</a>.</li>
 <li><code>options.header</code>, boolean: if true, output the <code>Generated by CoffeeScript</code> header.</li>
 </ul>
@@ -1069,7 +920,7 @@ <h2>Functions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="functions" data-run="cube%285%29"><small>▶</small>&ensp;cube(5)</button>
     </div>
   </div>
@@ -1094,7 +945,7 @@ <h2>Functions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="default_args" data-run="fill%28%22cup%22%29"><small>▶</small>&ensp;fill(&quot;cup&quot;)</button>
     </div>
   </div>
@@ -1127,7 +978,7 @@ <h2>Strings</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="interpolation" data-run="sentence"><small>▶</small>&ensp;sentence</button>
     </div>
   </div>
@@ -1154,7 +1005,7 @@ <h2>Strings</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="strings" data-run="mobyDick"><small>▶</small>&ensp;mobyDick</button>
     </div>
   </div>
@@ -1180,7 +1031,7 @@ <h2>Strings</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="heredocs" data-run="html"><small>▶</small>&ensp;html</button>
     </div>
   </div>
@@ -1241,7 +1092,7 @@ <h2>Objects and Arrays</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="objects_and_arrays" data-run="song.join%28%22%20%u2026%20%22%29"><small>▶</small>&ensp;song.join(&quot; … &quot;)</button>
     </div>
   </div>
@@ -1360,7 +1211,7 @@ <h2>Lexical Scoping and Variable Safety</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="scope" data-run="inner"><small>▶</small>&ensp;inner</button>
     </div>
   </div>
@@ -1469,7 +1320,7 @@ <h2>Splats, or Rest Parameters/Spread Syntax</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="splats" data-run="true">▶</button>
     </div>
   </div>
@@ -1499,7 +1350,7 @@ <h2>Splats, or Rest Parameters/Spread Syntax</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="array_spread" data-run="all"><small>▶</small>&ensp;all</button>
     </div>
   </div>
@@ -1518,14 +1369,15 @@ <h2>Splats, or Rest Parameters/Spread Syntax</h2>
 </textarea>
     </div>
     <div class="col-md-6 javascript-output-column">
-      <textarea class="javascript-output" id="object_spread-js">var currentUser, user;
+      <textarea class="javascript-output" id="object_spread-js">var currentUser, user,
+  _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
 
 user = {
   name: 'Werner Heisenberg',
   occupation: 'theoretical physicist'
 };
 
-currentUser = Object.assign({}, user, {
+currentUser = _extends({}, user, {
   status: 'Uncertain'
 });
 </textarea>
@@ -1533,7 +1385,7 @@ <h2>Splats, or Rest Parameters/Spread Syntax</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="object_spread" data-run="JSON.stringify%28currentUser%29"><small>▶</small>&ensp;JSON.stringify(currentUser)</button>
     </div>
   </div>
@@ -1549,10 +1401,12 @@ <h2>Loops and Comprehensions</h2>
   <div class="row">
     <div class="col-md-6 coffeescript-input-column">
       <textarea class="coffeescript-input" id="array_comprehensions-coffee"># Eat lunch.
+eat = (food) -> "#{food} eaten."
 eat food for food in ['toast', 'cheese', 'wine']
 
 # Fine five course dining.
 courses = ['greens', 'caviar', 'truffles', 'roast', 'cake']
+menu = (i, dish) -> "Menu Item #{i}: #{dish}" 
 menu i + 1, dish for dish, i in courses
 
 # Health conscious meal.
@@ -1562,7 +1416,11 @@ <h2>Loops and Comprehensions</h2>
     </div>
     <div class="col-md-6 javascript-output-column">
       <textarea class="javascript-output" id="array_comprehensions-js">// Eat lunch.
-var courses, dish, food, foods, i, j, k, l, len, len1, len2, ref;
+var courses, dish, eat, food, foods, i, j, k, l, len, len1, len2, menu, ref;
+
+eat = function(food) {
+  return `${food} eaten.`;
+};
 
 ref = ['toast', 'cheese', 'wine'];
 for (j = 0, len = ref.length; j < len; j++) {
@@ -1573,6 +1431,10 @@ <h2>Loops and Comprehensions</h2>
 // Fine five course dining.
 courses = ['greens', 'caviar', 'truffles', 'roast', 'cake'];
 
+menu = function(i, dish) {
+  return `Menu Item ${i}: ${dish}`;
+};
+
 for (i = k = 0, len1 = courses.length; k < len1; i = ++k) {
   dish = courses[i];
   menu(i + 1, dish);
@@ -1617,7 +1479,7 @@ <h2>Loops and Comprehensions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="range_comprehensions" data-run="countdown"><small>▶</small>&ensp;countdown</button>
     </div>
   </div>
@@ -1661,7 +1523,7 @@ <h2>Loops and Comprehensions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="object_comprehensions" data-run="ages.join%28%22%2C%20%22%29"><small>▶</small>&ensp;ages.join(&quot;, &quot;)</button>
     </div>
   </div>
@@ -1714,7 +1576,7 @@ <h2>Loops and Comprehensions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="while" data-run="lyrics.join%28%22%5Cn%22%29"><small>▶</small>&ensp;lyrics.join(&quot;\n&quot;)</button>
     </div>
   </div>
@@ -1787,7 +1649,7 @@ <h2>Array Slicing and Splicing with Ranges</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="slices" data-run="middle"><small>▶</small>&ensp;middle</button>
     </div>
   </div>
@@ -1814,7 +1676,7 @@ <h2>Array Slicing and Splicing with Ranges</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="splices" data-run="numbers"><small>▶</small>&ensp;numbers</button>
     </div>
   </div>
@@ -1863,7 +1725,7 @@ <h2>Everything is an Expression (at least, as much as possible)</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="expressions" data-run="eldest"><small>▶</small>&ensp;eldest</button>
     </div>
   </div>
@@ -1886,7 +1748,7 @@ <h2>Everything is an Expression (at least, as much as possible)</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="expressions_assignment" data-run="six"><small>▶</small>&ensp;six</button>
     </div>
   </div>
@@ -1918,7 +1780,7 @@ <h2>Everything is an Expression (at least, as much as possible)</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="expressions_comprehension" data-run="globals"><small>▶</small>&ensp;globals</button>
     </div>
   </div>
@@ -1952,7 +1814,7 @@ <h2>Everything is an Expression (at least, as much as possible)</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="expressions_try" data-run="true">▶</button>
     </div>
   </div>
@@ -2143,7 +2005,7 @@ <h2>The Existential Operator</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="existence" data-run="footprints"><small>▶</small>&ensp;footprints</button>
     </div>
   </div>
@@ -2250,13 +2112,13 @@ <h2>Chaining Function Calls</h2>
 .click (e) ->
   $ '.box'
   .fadeIn 'fast'
-  .addClass '.active'
+  .addClass 'show'
 .css 'background', 'white'
 </textarea>
     </div>
     <div class="col-md-6 javascript-output-column">
       <textarea class="javascript-output" id="chaining-js">$('body').click(function(e) {
-  return $('.box').fadeIn('fast').addClass('.active');
+  return $('.box').fadeIn('fast').addClass('show');
 }).css('background', 'white');
 </textarea>
     </div>
@@ -2290,7 +2152,7 @@ <h2>Destructuring Assignment</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="parallel_assignment" data-run="theBait"><small>▶</small>&ensp;theBait</button>
     </div>
   </div>
@@ -2321,7 +2183,7 @@ <h2>Destructuring Assignment</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="multiple_return_values" data-run="forecast"><small>▶</small>&ensp;forecast</button>
     </div>
   </div>
@@ -2371,7 +2233,7 @@ <h2>Destructuring Assignment</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="object_extraction" data-run="name%20+%20%22-%22%20+%20street"><small>▶</small>&ensp;name + &quot;-&quot; + street</button>
     </div>
   </div>
@@ -2398,7 +2260,7 @@ <h2>Destructuring Assignment</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="patterns_and_splats" data-run="contents.join%28%22%22%29"><small>▶</small>&ensp;contents.join(&quot;&quot;)</button>
     </div>
   </div>
@@ -2425,7 +2287,7 @@ <h2>Destructuring Assignment</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="expansion" data-run="first%20+%20%22%20%22%20+%20last"><small>▶</small>&ensp;first + &quot; &quot; + last</button>
     </div>
   </div>
@@ -2461,7 +2323,7 @@ <h2>Destructuring Assignment</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="constructor_destructuring" data-run="tim.age%20+%20%22%20%22%20+%20tim.height"><small>▶</small>&ensp;tim.age + &quot; &quot; + tim.height</button>
     </div>
   </div>
@@ -2538,7 +2400,7 @@ <h2>Generator Functions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="generators" data-run="ps.next%28%29.value"><small>▶</small>&ensp;ps.next().value</button>
     </div>
   </div>
@@ -2594,7 +2456,7 @@ <h2>Generator Functions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="generator_iteration" data-run="getFibonacciNumbers%2810%29"><small>▶</small>&ensp;getFibonacciNumbers(10)</button>
     </div>
   </div>
@@ -2660,7 +2522,7 @@ <h2>Async Functions</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="async" data-run="true">▶</button>
     </div>
   </div>
@@ -2739,7 +2601,7 @@ <h2>Classes</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="classes" data-run="true">▶</button>
     </div>
   </div>
@@ -2785,7 +2647,7 @@ <h2>Classes</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="static" data-run="Teenager.say%28%22Are%20we%20there%20yet%3F%22%29"><small>▶</small>&ensp;Teenager.say(&quot;Are we there yet?&quot;)</button>
     </div>
   </div>
@@ -2813,7 +2675,7 @@ <h2>Prototypal Inheritance</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="prototypes" data-run="%22one_two%22.dasherize%28%29"><small>▶</small>&ensp;&quot;one_two&quot;.dasherize()</button>
     </div>
   </div>
@@ -2967,7 +2829,7 @@ <h2>Chained Comparisons</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="comparisons" data-run="healthy"><small>▶</small>&ensp;healthy</button>
     </div>
   </div>
@@ -3036,7 +2898,7 @@ <h2>Tagged Template Literals</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="tagged_template_literals" data-run="greet%28%22greg%22%2C%20%22awesome%22%29"><small>▶</small>&ensp;greet(&quot;greg&quot;, &quot;awesome&quot;)</button>
     </div>
   </div>
@@ -3168,7 +3030,7 @@ <h2>Embedded JavaScript</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="embedded" data-run="hi%28%29"><small>▶</small>&ensp;hi()</button>
     </div>
   </div>
@@ -3195,7 +3057,7 @@ <h2>Embedded JavaScript</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="embedded_escaped" data-run="markdown%28%29"><small>▶</small>&ensp;markdown()</button>
     </div>
   </div>
@@ -3224,7 +3086,7 @@ <h2>Embedded JavaScript</h2>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="embedded_block" data-run="time%28%29"><small>▶</small>&ensp;time()</button>
     </div>
   </div>
@@ -3444,7 +3306,7 @@ <h2>Web Chat (IRC)</h2>
         </section>
         <section id="annotated-source">
           <h2>Annotated Source</h2>
-<p>You can browse the CoffeeScript 2.0.0-beta4 source in readable, annotated form <a href="http://coffeescript.org/v2/annotated-source/">here</a>. You can also jump directly to a particular source file:</p>
+<p>You can browse the CoffeeScript 2.0.0-beta5 source in readable, annotated form <a href="http://coffeescript.org/v2/annotated-source/">here</a>. You can also jump directly to a particular source file:</p>
 <ul>
 <li><a href="http://coffeescript.org/v2/annotated-source/grammar.html">Grammar Rules — src/grammar</a></li>
 <li><a href="http://coffeescript.org/v2/annotated-source/lexer.html">Lexing Tokens — src/lexer</a></li>
@@ -3495,7 +3357,7 @@ <h3><code>let</code> and <code>const</code>: block-scoped and reassignment-prote
         <section id="unsupported-named-functions">
           <h3>Named functions and function declarations</h3>
 <p>Newcomers to CoffeeScript often wonder how to generate the JavaScript <code>function foo() {}</code>, as opposed to the <code>foo = function() {}</code> that CoffeeScript produces. The first form is a <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function">function declaration</a>, and the second is a <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/function">function expression</a>. As stated above, in CoffeeScript <a href="#expressions">everything is an expression</a>, so naturally we favor the expression form. Supporting only one variant helps avoid confusing bugs that can arise from the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function#Function_declaration_hoisting">subtle differences between the two forms</a>.</p>
-<p>Technically, <code>foo = function() {}</code> is creating an anonymous function that gets assigned to a variable named <code>foo</code>. Some very early versions of CoffeeScript named this function, e.g. <code>foo = function foo() {}</code>, but this was dropped because of compatibility issues with Internet Explorer. For a while this annoyed people, as these functions would be unnamed in stack traces; but modern JavaScript runtimes <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name">infer the names of such anonymous functions</a> from the names of the variables to which they’re assigned. Given that this is the case, and given that not all functions in function expressions can be named (for example, the functions in <code>first.fn = -&gt;; second.fn = -&gt;</code> can’t both be named <code>fn</code>) it’s simplest to just preserve the current behavior.</p>
+<p>Technically, <code>foo = function() {}</code> is creating an anonymous function that gets assigned to a variable named <code>foo</code>. Some very early versions of CoffeeScript named this function, e.g. <code>foo = function foo() {}</code>, but this was dropped because of compatibility issues with Internet Explorer. For a while this annoyed people, as these functions would be unnamed in stack traces; but modern JavaScript runtimes <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name">infer the names of such anonymous functions</a> from the names of the variables to which they’re assigned. Given that this is the case, it’s simplest to just preserve the current behavior.</p>
 
         </section>
         <section id="unsupported-get-set">
@@ -3537,7 +3399,7 @@ <h3><code>get</code> and <code>set</code> keyword shorthand syntax</h3>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="get_set" data-run="screen.height"><small>▶</small>&ensp;screen.height</button>
     </div>
   </div>
@@ -3580,7 +3442,7 @@ <h3>Bound (fat arrow) functions</h3>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="breaking_change_fat_arrow" data-run="outer%281%2C%202%29"><small>▶</small>&ensp;outer(1, 2)</button>
     </div>
   </div>
@@ -3612,7 +3474,7 @@ <h3>Default values for function parameters and destructured elements</h3>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="breaking_change_function_parameter_default_values" data-run="f%28null%29"><small>▶</small>&ensp;f(null)</button>
     </div>
   </div>
@@ -3639,7 +3501,7 @@ <h3>Default values for function parameters and destructured elements</h3>
   </div>
   
   <div class="row">
-    <div class="col-xs-12 text-xs-right">
+    <div class="col text-right">
       <button type="button" class="btn btn-primary" data-action="run-code-example" data-example="breaking_change_destructuring_default_values" data-run="a"><small>▶</small>&ensp;a</button>
     </div>
   </div>
@@ -3893,6 +3755,23 @@ <h3>Argument parsing and shebang (<code>#!</code>) lines</h3>
       </section>
       <section id="changelog">
         <h2>Changelog</h2>
+<div class="anchor" id="2.0.0-beta5"></div>
+<h2 class="header">
+  <a href="https://github.com/jashkenas/coffeescript/compare/2.0.0-beta4...2.0.0-beta5">2.0.0-beta5</a>
+  <span class="timestamp"> &mdash; <time datetime="2017-09-02">September 2, 2017</time></span>
+</h2><ul>
+<li>Node 6 is now supported, and we will try to maintain that as the minimum required version for CoffeeScript 2 via the <code>coffee</code> command or Node API. Older versions of Node, or non-evergreen browsers, can compile via the <a href="./browser-compiler/coffeescript.js">browser compiler</a>.</li>
+<li>The command line <code>--output</code> flag now allows you to specify an output filename, not just an output folder.</li>
+<li>The command line <code>--require</code> flag now properly handles filenames or module names that are invalid identifiers (like an NPM module with a hyphen in the name).</li>
+<li><code>Object.assign</code>, output when object destructuring is used, is polyfilled using the same polyfill that Babel outputs. This means that polyfills shouldn’t be required unless support for Internet Explorer 8 or below is desired (or your own code uses a feature that requires a polyfill). See <a href="#es2015plus-output">ES2015+ Output</a>.</li>
+<li>A string or JSX interpolation that contains only a comment (<code>&quot;a#{### comment ###}b&quot;</code> or <code>&lt;div&gt;{### comment ###}&lt;/div&gt;</code>) is now output (<code>`a${/* comment */}b`</code>)</li>
+<li>Interpolated strings (ES2015 template literals) that contain quotation marks no longer have the quotation marks escaped: <code>`say &quot;${message}&quot;`</code></li>
+<li>It is now possible to chain after a function literal (for example, to define a function and then call <code>.call</code> on it).</li>
+<li>The results of the async tests are included in the output when you run <code>cake test</code>.</li>
+<li>Bugfixes for object destructuring; expansions in function parameters; generated reference variables in function parameters; chained functions after <code>do</code>; splats after existential operator soaks in arrays (<code>[a?.b...]</code>); trailing <code>if</code> with splat in arrays or function parameters (<code>[a if b...]</code>); attempting to <code>throw</code> an <code>if</code>, <code>for</code>, <code>switch</code>, <code>while</code> or other invalid construct.</li>
+<li>Bugfixes for syntactical edge cases: semicolons after <code>=</code> and other “mid-expression” tokens; spaces after <code>::</code>; and scripts that begin with <code>:</code> or <code>*</code>.</li>
+<li>Bugfixes for source maps generated via the Node API; and stack trace line numbers when compiling CoffeeScript via the Node API from within a <code>.coffee</code> file.</li>
+</ul>
 <div class="anchor" id="2.0.0-beta4"></div>
 <h2 class="header">
   <a href="https://github.com/jashkenas/coffeescript/compare/2.0.0-beta3...2.0.0-beta4">2.0.0-beta4</a>
@@ -4546,24 +4425,24 @@ <h2 class="header">
 </div>
 
 
-<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js" integrity="sha384-3ceskX3iaEnIogmQchP8opvBy3Mi7Ce34nWjpBIwVTHfGYWQS9jwHDVRnpKKHJg7" crossorigin="anonymous"></script>
+<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js" integrity="sha384-xBuQ/xzmlsLoJpyjoggmTEz8OWUFM0/RC5BsqQBDX2v5cMvDHcMakNTNrHIW2I5f" crossorigin="anonymous"></script>
 <script>
-  window.Tether = {}; // Remove if we want to use Bootstrap tooltips
+  window.Popper = {}; // Remove if we want to use Bootstrap tooltips
 </script>
-<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.5/js/bootstrap.min.js" integrity="sha384-BLiI7JTZm+JWlgKa0M0kGRpJbF2J8q+qreVrKBC47e3K6BW78kGLrCkeRX6I9RoK" crossorigin="anonymous"></script>
-<script src="https://cdn.jsdelivr.net/g/codemirror@4.5.0(codemirror.min.js+mode/coffeescript/coffeescript.js+addon/lint/coffeescript-lint.js+mode/javascript/javascript.js)" crossorigin="anonymous"></script>
+<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/combine/npm/codemirror@5.29.0/lib/codemirror.js,npm/codemirror@5.29.0/mode/coffeescript/coffeescript.js,npm/codemirror@5.29.0/addon/lint/coffeescript-lint.js,npm/codemirror@5.29.0/mode/javascript/javascript.js"></script>
 
 <script src="browser-compiler/coffeescript.js"></script>
 <script type="text/coffeescript">
 $(document).ready ->
   # Mobile navigation
   toggleSidebar = ->
-    $('.menu-button, .row-offcanvas').toggleClass 'active'
+    $('.navbar-toggler, .row-offcanvas').toggleClass 'show'
 
   $('[data-toggle="offcanvas"]').click toggleSidebar
 
   $('[data-action="sidebar-nav"]').click (event) ->
-    if $('.menu-button').is(':visible')
+    if $('.navbar-toggler').is(':visible')
       event.preventDefault()
       toggleSidebar()
       setTimeout ->
@@ -4577,12 +4456,12 @@ <h2 class="header">
     offset: Math.round $('main').css('padding-top').replace('px', '')
 
   initializeScrollspyFromHash = (hash) ->
-    $(".nav-link.active[href!='#{hash}']").removeClass 'active'
+    $("#contents a.active[href!='#{hash}']").removeClass 'show'
 
   $(window).on 'activate.bs.scrollspy', (event, target) -> # Why `window`? https://github.com/twbs/bootstrap/issues/20086
     # We only want one active link in the nav
-    $(".nav-link.active[href!='#{target.relatedTarget}']").removeClass 'active'
-    $target = $(".nav-link[href='#{target.relatedTarget}']")
+    $("#contents a.active[href!='#{target.relatedTarget}']").removeClass 'show'
+    $target = $("#contents a[href='#{target.relatedTarget}']")
     # Update the browser address bar on scroll or navigation
     window.history.pushState {}, $target.text(), $target.prop('href')
 
@@ -4615,7 +4494,7 @@ <h2 class="header">
           lastCompilationStartTime = Date.now()
           try
             coffee = editor.getValue()
-            if index is 0 and $('#try').hasClass('active') # If this is the editor in Try CoffeeScript and it’s still visible
+            if index is 0 and $('#try').hasClass('show') # If this is the editor in Try CoffeeScript and it’s still visible
               # Update the hash with the current code
               link = "try:#{encodeURIComponent coffee}"
               window.history.pushState {}, 'CoffeeScript', "#{location.href.split('#')[0]}##{link}"
@@ -4664,9 +4543,9 @@ <h2 class="header">
         if coffee?
           editors[0].setValue coffee
       catch exception
-    $('#try, #try-link').toggleClass 'active'
+    $('#try, #try-link').toggleClass 'show'
   closeTry = ->
-    $('#try, #try-link').removeClass 'active'
+    $('#try, #try-link').removeClass 'show'
 
   $('[data-toggle="try"]').click toggleTry
   $('[data-close="try"]').click closeTry
@@ -4681,8 +4560,9 @@ <h2 class="header">
       toggleTry()
     else
       initializeScrollspyFromHash window.location.hash
-      # Initializing the code editors might’ve thrown off our vertical scroll position
-      document.getElementById(window.location.hash.slice(1).replace(/try:.*/, '')).scrollIntoView()
+      if window.location.hash.length > 1
+        # Initializing the code editors might’ve thrown off our vertical scroll position
+        document.getElementById(window.location.hash.slice(1).replace(/try:.*/, '')).scrollIntoView()
 
 </script>
 
diff --git a/docs/v2/test.html b/docs/v2/test.html
index 5250e8bd62..ce19c8df90 100644
--- a/docs/v2/test.html
+++ b/docs/v2/test.html
@@ -52,16 +52,27 @@ <h1>CoffeeScript Test Suite</h1>
   stdout.appendChild div
   msg
 
+asyncTests = []
+onFail = (description, fn, err) ->
+  failures.push
+    error: err
+    description: description
+    source: fn.toString() if fn.toString?
+
 @test = (description, fn) ->
   ++total
   try
-    fn.call(fn)
-    ++passedTests
-  catch error
-    failures.push
-      error: error
-      description: description
-      source: fn.toString() if fn.toString?
+    result = fn.call(fn)
+    if result instanceof Promise # An async test.
+      asyncTests.push result
+      result.then ->
+        passedTests++
+      .catch (err) ->
+        onFail description, fn, err
+    else
+      passedTests++
+  catch err
+    onFail description, fn, err
 
 @failures =
   push: (failure) -> # Match function called by regular tests
@@ -74,11 +85,11 @@ <h1>CoffeeScript Test Suite</h1>
 @ok = (good, msg = 'Error') ->
   throw Error msg unless good
 
-# Polyfill Node assert's fail
+# Polyfill Node assert’s fail
 @fail = ->
   ok no
 
-# Polyfill Node assert's deepEqual with Underscore's isEqual
+# Polyfill Node assert’s deepEqual with Underscore’s isEqual
 @deepEqual = (a, b) ->
   ok _.isEqual(a, b), "Expected #{JSON.stringify a} to deep equal #{JSON.stringify b}"
 
@@ -113,7 +124,7 @@ <h1>CoffeeScript Test Suite</h1>
   "Expected #{reset}#{a}#{red} to equal #{reset}#{b}#{red}"
 
 @arrayEq = (a, b, msg) ->
-  ok arrayEgal(a,b), msg or
+  ok arrayEgal(a, b), msg or
   "Expected #{reset}#{a}#{red} to deep equal #{reset}#{b}#{red}"
 
 @eqJS = (input, expectedOutput, msg) ->
@@ -154,11 +165,14 @@ <h1>CoffeeScript Test Suite</h1>
   CoffeeScript.run test.innerHTML, options
 
 # Finish up
-yay = passedTests is total and not failedTests
-sec = (new Date - start) / 1000
-msg = "passed #{passedTests} tests in #{sec.toFixed 2} seconds"
-msg = "failed #{total - passedTests} tests and #{msg}" unless yay
-say msg, (if yay then 'good' else 'bad')
+done = ->
+  yay = passedTests is total and not failedTests
+  sec = (new Date - start) / 1000
+  msg = "passed #{passedTests} tests in #{sec.toFixed 2} seconds"
+  msg = "failed #{total - passedTests} tests and #{msg}" unless yay
+  say msg, (if yay then 'good' else 'bad')
+
+Promise.all(asyncTests).then(done).catch(done)
 </script>
 
 <script type="text/x-coffeescript" class="test" id="argument_parsing">
@@ -294,7 +308,7 @@ <h1>CoffeeScript Test Suite</h1>
   -n, --nodes        print out the parse tree that the parser produces
       --nodejs       pass options directly to the "node" binary
       --no-header    suppress the "Generated by" header
-  -o, --output       set the output directory for compiled JavaScript
+  -o, --output       set the output path or path/filename for compiled JavaScript
   -p, --print        print out the compiled JavaScript
   -r, --require      require the given module before eval or REPL
   -s, --stdio        listen for and compile scripts over stdio
@@ -347,7 +361,6 @@ <h1>CoffeeScript Test Suite</h1>
 
 
 test "mixed shorthand objects in array lists", ->
-
   arr = [
     a:1
     'b'
@@ -367,7 +380,6 @@ <h1>CoffeeScript Test Suite</h1>
   eq arr[2].b, 1
   eq arr[3], 'b'
 
-
 test "array splats with nested arrays", ->
   nonce = {}
   a = [nonce]
@@ -379,6 +391,54 @@ <h1>CoffeeScript Test Suite</h1>
   list = [1, 2, a...]
   arrayEq list, [1, 2, [nonce]]
 
+test "#4260: splat after existential operator soak", ->
+  a = {b: [3]}
+  foo = (a) -> [a]
+  arrayEq [a?.b...], [3]
+  arrayEq [c?.b ? []...], []
+  arrayEq [...a?.b], [3]
+  arrayEq [...c?.b ? []], []
+  arrayEq foo(a?.b...), [3]
+  arrayEq foo(...a?.b), [3]
+  arrayEq foo(c?.b ? []...), [undefined]
+  arrayEq foo(...c?.b ? []), [undefined]
+  e = yes
+  f = null
+  arrayEq [(a if e)?.b...], [3]
+  arrayEq [(a if f)?.b ? []...], []
+  arrayEq [...(a if e)?.b], [3]
+  arrayEq [...(a if f)?.b ? []], []
+  arrayEq foo((a if e)?.b...), [3]
+  arrayEq foo(...(a if e)?.b), [3]
+  arrayEq foo((a if f)?.b ? []...), [undefined]
+  arrayEq foo(...(a if f)?.b ? []), [undefined]
+
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  arrayEq [... a?.b], [3]
+  arrayEq [... c?.b ? []], []
+  arrayEq [a?.b ...], [3]
+  arrayEq [(a if e)?.b ...], [3]
+  arrayEq foo(a?.b ...), [3]
+  arrayEq foo(... a?.b), [3]
+
+test "#1349: trailing if after splat", ->
+  a = [3]
+  b = yes
+  c = null
+  foo = (a) -> [a]
+  arrayEq [a if b...], [3]
+  arrayEq [(a if c) ? []...], []
+  arrayEq [...a if b], [3]
+  arrayEq [...(a if c) ? []], []
+  arrayEq foo((a if b)...), [3]
+  arrayEq foo(...(a if b)), [3]
+  arrayEq foo((a if c) ? []...), [undefined]
+  arrayEq foo(...(a if c) ? []), [undefined]
+
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  arrayEq [... a if b], [3]
+  arrayEq [a if b ...], [3]
+
 test "#1274: `[] = a()` compiles to `false` instead of `a()`", ->
   a = false
   fn = -> a = true
@@ -652,6 +712,12 @@ <h1>CoffeeScript Test Suite</h1>
   arrayEq [b,c,d], y
   eq e, z
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  [x,y ...,z] = [a,b,c,d,e]
+  eq a, x
+  arrayEq [b,c,d], y
+  eq e, z
+
 test "deep destructuring assignment with splats", ->
   a={}; b={}; c={}; d={}; e={}; f={}; g={}; h={}; i={}
   [u, [v, w..., x], y..., z] = [a, [b, c, d, e], f, g, h, i]
@@ -696,6 +762,11 @@ <h1>CoffeeScript Test Suite</h1>
   eq a, y
   arrayEq [b,c,d], z
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  {a: b: [y, z ...]} = obj
+  eq a, y
+  arrayEq [b,c,d], z
+
 test "destructuring assignment against an expression", ->
   a={}; b={}
   [y, z] = if true then [a, b] else [b, a]
@@ -730,6 +801,15 @@ <h1>CoffeeScript Test Suite</h1>
   eq b, 1
   deepEqual d, {}
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  {
+    a: {b} = c
+    d ...
+  } = obj
+
+  eq b, 1
+  deepEqual d, {}
+
 test "destructuring assignment with splat with default value", ->
   obj = {}
   c = {val: 1}
@@ -743,6 +823,41 @@ <h1>CoffeeScript Test Suite</h1>
   deepEqual a, val: 1
   deepEqual b, val: 2
 
+  o = {
+    props: {
+      p: {
+        n: 1
+        m: 5
+      }
+      s: 6
+    }
+  }
+  {p: {m, q..., t = {obj...}}, r...} = o.props
+  eq m, o.props.p.m
+  deepEqual r, s: 6
+  deepEqual q, n: 1
+  deepEqual t, obj
+
+  @props = o.props
+  {p: {m}, r...} = @props
+  eq m, @props.p.m
+  deepEqual r, s: 6
+
+  {p: {m}, r...} = {o.props..., p:{m:9}}
+  eq m, 9
+
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  {
+    a: {
+      a ...
+    }
+    b: {
+      b ...
+    }
+  } = obj
+  deepEqual a, val: 1
+  deepEqual b, val: 2
+
 test "destructuring assignment with dynamic keys and splats", ->
   i = 0
   foo = -> ++i
@@ -766,6 +881,15 @@ <h1>CoffeeScript Test Suite</h1>
   n = { x, y, z... }
   deepEqual n, { x: 1, y: 2, a: 3, b: 4 }
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  { x, y, z ... } = { x: 1, y: 2, a: 3, b: 4 }
+  eq x, 1
+  eq y, 2
+  deepEqual z, { a: 3, b: 4 }
+
+  n = { x, y, z ... }
+  deepEqual n, { x: 1, y: 2, a: 3, b: 4 }
+
 test "deep destructuring assignment with objects: ES2015", ->
   a1={}; b1={}; c1={}; d1={}
   obj = {
@@ -787,6 +911,13 @@ <h1>CoffeeScript Test Suite</h1>
   eq bb, b1
   eq r2.b2, obj.b2
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  {a: w, b: {c: {d: {b1: bb, r1 ...}}}, r2 ...} = obj
+  eq r1.e, c1
+  eq r2.b, undefined
+  eq bb, b1
+  eq r2.b2, obj.b2
+
 test "deep destructuring assignment with defaults: ES2015", ->
   obj =
     b: { c: 1, baz: 'qux' }
@@ -810,16 +941,55 @@ <h1>CoffeeScript Test Suite</h1>
   eq hello, 'world'
   deepEqual h, some: 'prop'
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  {
+    a ...
+    b: {
+      c,
+      d ...
+    }
+    e: {
+      f: hello
+      g: {
+        h ...
+      } = i
+    } = j
+  } = obj
+
+  deepEqual a, foo: 'bar'
+  eq c, 1
+  deepEqual d, baz: 'qux'
+  eq hello, 'world'
+  deepEqual h, some: 'prop'
+
 test "object spread properties: ES2015", ->
   obj = {a: 1, b: 2, c: 3, d: 4, e: 5}
   obj2 = {obj..., c:9}
   eq obj2.c, 9
   eq obj.a, obj2.a
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  obj2 = {
+    obj ...
+    c:9
+  }
+  eq obj2.c, 9
+  eq obj.a, obj2.a
+
   obj2 = {obj..., a: 8, c: 9, obj...}
   eq obj2.c, 3
   eq obj.a, obj2.a
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  obj2 = {
+    obj ...
+    a: 8
+    c: 9
+    obj ...
+  }
+  eq obj2.c, 3
+  eq obj.a, obj2.a
+
   obj3 = {obj..., b: 7, g: {obj2..., c: 1}}
   eq obj3.g.c, 1
   eq obj3.b, 7
@@ -837,10 +1007,42 @@ <h1>CoffeeScript Test Suite</h1>
   eq obj4.f.g, 5
   deepEqual obj4.f, obj.c.f
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  (({
+    a
+    b
+    r ...
+    }) ->
+    eq 1, a
+    deepEqual r, {c: 3, d: 44, e: 55}
+  ) {
+    obj2 ...
+    d: 44
+    e: 55
+  }
+
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  obj4 = {
+    a: 10
+    obj.c ...
+  }
+  eq obj4.a, 10
+  eq obj4.d, 3
+  eq obj4.f.g, 5
+  deepEqual obj4.f, obj.c.f
+
   obj5 = {obj..., ((k) -> {b: k})(99)...}
   eq obj5.b, 99
   deepEqual obj5.c, obj.c
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  obj5 = {
+    obj ...
+    ((k) -> {b: k})(99) ...
+  }
+  eq obj5.b, 99
+  deepEqual obj5.c, obj.c
+
   fn = -> {c: {d: 33, e: 44, f: {g: 55}}}
   obj6 = {obj..., fn()...}
   eq obj6.c.d, 33
@@ -849,7 +1051,16 @@ <h1>CoffeeScript Test Suite</h1>
   obj7 = {obj..., fn()..., {c: {d: 55, e: 66, f: {77}}}...}
   eq obj7.c.d, 55
   deepEqual obj6.c, {d: 33, e: 44, f: {g: 55}}
-  
+
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  obj7 = {
+    obj ...
+    fn() ...
+    {c: {d: 55, e: 66, f: {77}}} ...
+  }
+  eq obj7.c.d, 55
+  deepEqual obj6.c, {d: 33, e: 44, f: {g: 55}}
+
   obj =
     a:
       b:
@@ -1214,33 +1425,38 @@ <h1>CoffeeScript Test Suite</h1>
   {e: {f = 5} = {}} = {}
   eq 5, f
 
+test "#4674: _extends utility for object spreads 1", ->
+  eqJS(
+    "{a, b..., c..., d}"
+    """
+      var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
+
+      _extends({a}, b, c, {d});
+    """
+  )
+
+test "#4674: _extends utility for object spreads 2", ->
+  _extends = -> 3
+  a = b: 1
+  c = d: 2
+  e = {a..., c...}
+  eq e.b, 1
+  eq e.d, 2
+
 </script>
 <script type="text/x-coffeescript" class="test" id="async">
-# Functions that contain the `await` keyword will compile into async
-# functions, which currently only Node 7+ in harmony mode can even
-# evaluate, much less run. Therefore we need to prevent runtimes
-# which will choke on such code from even loading it. This file is
-# only loaded by async-capable environments, so we redefine `test`
-# here even though it is based on `test` defined in `Cakefile`.
-# It replaces `test` for this file, and adds to the tracked
-# `passedTests` and `failures` arrays which are global objects.
-test = (description, fn) ->
-  try
-    fn.test = {description, currentFile}
-    await fn.call(fn)
-    ++passedTests
-  catch e
-    failures.push
-      filename: currentFile
-      error: e
-      description: description if description?
-      source: fn.toString() if fn.toString?
+# Functions that contain the `await` keyword will compile into async functions,
+# supported by Node 7.6+, Chrome 55+, Firefox 52+, Safari 10.1+ and Edge.
+# But runtimes that don’t support the `await` keyword will throw an error,
+# even if we put `return unless global.supportsAsync` at the top of this file.
+# Therefore we need to prevent runtimes which will choke on such code from even
+# parsing it, which is handled in `Cakefile`.
 
 
-# always fulfills
+# This is always fulfilled.
 winning = (val) -> Promise.resolve val
 
-# always is rejected
+# This is always rejected.
 failing = (val) -> Promise.reject new Error val
 
 
@@ -4032,6 +4248,26 @@ <h1>CoffeeScript Test Suite</h1>
     3;
   }'''
 
+test "Block comment in an interpolated string", ->
+  eqJS '"a#{### Comment ###}b"', "`a${/* Comment */''}b`;"
+  eqJS '"a#{### 1 ###}b#{### 2 ###}c"', "`a${/* 1 */''}b${/* 2 */''}c`;"
+
+test "#4629: Block comment in CSX interpolation", ->
+  eqJS '<div>{### Comment ###}</div>', '<div>{/* Comment */}</div>;'
+  eqJS '''
+  <div>
+  {###
+    Multiline
+    Comment
+  ###}
+  </div>''', '''
+  <div>
+  {/*
+    Multiline
+    Comment
+  */}
+  </div>;'''
+
 test "Line comment in an interpolated string", ->
   eqJS '''
   "a#{# Comment
@@ -6258,7 +6494,7 @@ <h1>CoffeeScript Test Suite</h1>
     finally
       fs.unlinkSync tempFile
 
-  test "#3890 Error.prepareStackTrace doesn't throw an error if a compiled file is deleted", ->
+  test "#3890: Error.prepareStackTrace doesn't throw an error if a compiled file is deleted", ->
     # Adapted from https://github.com/atom/coffee-cash/blob/master/spec/coffee-cash-spec.coffee
     filePath = path.join os.tmpdir(), 'PrepareStackTraceTestFile.coffee'
     fs.writeFileSync filePath, "module.exports = -> throw new Error('hello world')"
@@ -6273,7 +6509,10 @@ <h1>CoffeeScript Test Suite</h1>
     doesNotThrow(-> error.stack)
     notEqual error.stack.toString().indexOf(filePath), -1
 
-  test "#4418 stack traces for compiled files reference the correct line number", ->
+  test "#4418: stack traces for compiled files reference the correct line number", ->
+    # The browser is already compiling other anonymous scripts (the tests)
+    # which will conflict.
+    return if global.testingBrowser
     filePath = path.join os.tmpdir(), 'StackTraceLineNumberTestFile.coffee'
     fileContents = """
       testCompiledFileStackTraceLineNumber = ->
@@ -6294,15 +6533,18 @@ <h1>CoffeeScript Test Suite</h1>
     eq /StackTraceLineNumberTestFile.coffee:(\d)/.exec(error.stack.toString())[1], '3'
 
 
-test "#4418 stack traces for compiled strings reference the correct line number", ->
+test "#4418: stack traces for compiled strings reference the correct line number", ->
+  # The browser is already compiling other anonymous scripts (the tests)
+  # which will conflict.
+  return if global.testingBrowser
   try
-    CoffeeScript.run """
+    CoffeeScript.run '''
       testCompiledStringStackTraceLineNumber = ->
         # `a` on the next line is undefined and should throw a ReferenceError
         console.log a if true
 
       do testCompiledStringStackTraceLineNumber
-      """
+      '''
   catch error
 
   # Make sure the line number reported is line 3 (the original Coffee source)
@@ -6310,6 +6552,26 @@ <h1>CoffeeScript Test Suite</h1>
   eq /testCompiledStringStackTraceLineNumber.*:(\d):/.exec(error.stack.toString())[1], '3'
 
 
+test "#4558: compiling a string inside a script doesn’t screw up stack trace line number", ->
+  # The browser is already compiling other anonymous scripts (the tests)
+  # which will conflict.
+  return if global.testingBrowser
+  try
+    CoffeeScript.run '''
+      testCompilingInsideAScriptDoesntScrewUpStackTraceLineNumber = ->
+        if require?
+          CoffeeScript = require './lib/coffeescript'
+          CoffeeScript.compile ''
+        throw new Error 'Some Error'
+
+      do testCompilingInsideAScriptDoesntScrewUpStackTraceLineNumber
+      '''
+  catch error
+
+  # Make sure the line number reported is line 5 (the original Coffee source)
+  # and not line 10 (the generated JavaScript).
+  eq /testCompilingInsideAScriptDoesntScrewUpStackTraceLineNumber.*:(\d):/.exec(error.stack.toString())[1], '5'
+
 test "#1096: unexpected generated tokens", ->
   # Implicit ends
   assertErrorFormat 'a:, b', '''
@@ -7926,6 +8188,15 @@ <h1>CoffeeScript Test Suite</h1>
       ^
   '''
 
+test "#3098: suppressed newline should be unsuppressed by semicolon", ->
+  assertErrorFormat '''
+    a = ; 5
+  ''', '''
+    [stdin]:1:5: error: unexpected ;
+    a = ; 5
+        ^
+  '''
+
 </script>
 <script type="text/x-coffeescript" class="test" id="eval">
 if vm = require? 'vm'
@@ -8052,10 +8323,8 @@ <h1>CoffeeScript Test Suite</h1>
     catch err
   eq nonce, fn()
 
-
-# Catch leads to broken scoping: #1595
-
-test "try/catch with a reused variable name.", ->
+test "#1595: try/catch with a reused variable name", ->
+  # `catch` shouldn’t lead to broken scoping.
   do ->
     try
       inner = 5
@@ -8063,11 +8332,7 @@ <h1>CoffeeScript Test Suite</h1>
       # nothing
   eq typeof inner, 'undefined'
 
-
-# Allowed to destructure exceptions: #2580
-
-test "try/catch with destructuring the exception object", ->
-
+test "#2580: try/catch with destructuring the exception object", ->
   result = try
     missing.object
   catch {message}
@@ -8075,8 +8340,6 @@ <h1>CoffeeScript Test Suite</h1>
 
   eq message, 'missing is not defined'
 
-
-
 test "Try catch finally as implicit arguments", ->
   first = (x) -> x
 
@@ -8093,8 +8356,8 @@ <h1>CoffeeScript Test Suite</h1>
   catch e
   eq bar, yes
 
-# Catch Should Not Require Param: #2900
-test "parameter-less catch clause", ->
+test "#2900: parameter-less catch clause", ->
+  # `catch` should not require a parameter.
   try
     throw new Error 'failed'
   catch
@@ -8104,6 +8367,56 @@ <h1>CoffeeScript Test Suite</h1>
 
   ok try throw new Error 'failed' catch then true
 
+test "#3709: throwing an if statement", ->
+  # `throw if` should return a closure around the `if` block, so that the
+  # output is valid JavaScript.
+  try
+    throw if no
+        new Error 'drat!'
+      else
+        new Error 'no escape!'
+  catch err
+    eq err.message, 'no escape!'
+
+  try
+    throw if yes then new Error 'huh?' else null
+  catch err
+    eq err.message, 'huh?'
+
+test "#3709: throwing a switch statement", ->
+  i = 3
+  try
+    throw switch i
+      when 2
+        new Error 'not this one'
+      when 3
+        new Error 'oh no!'
+  catch err
+    eq err.message, 'oh no!'
+
+test "#3709: throwing a for loop", ->
+  # `throw for` should return a closure around the `for` block, so that the
+  # output is valid JavaScript.
+  try
+    throw for i in [0..3]
+      i * 2
+  catch err
+    arrayEq err, [0, 2, 4, 6]
+
+test "#3709: throwing a while loop", ->
+  i = 0
+  try
+    throw while i < 3
+      i++
+  catch err
+    eq i, 3
+
+test "#3789: throwing a throw", ->
+  try
+    throw throw throw new Error 'whoa!'
+  catch err
+    eq err.message, 'whoa!'
+
 </script>
 <script type="text/x-coffeescript" class="test" id="formatting">
 # Formatting
@@ -8195,6 +8508,9 @@ <h1>CoffeeScript Test Suite</h1>
   a?[b..c]
   """
 
+test "#1768: space between `::` and index is ignored", ->
+  eq 'function', typeof String:: ['toString']
+
 # Array Literals
 
 test "indented array literals don't trigger whitespace rewriting", ->
@@ -8516,6 +8832,44 @@ <h1>CoffeeScript Test Suite</h1>
       msg: 'b'
   eq undefined, y
 
+test "#4576: multiple row function chaining", ->
+  ->
+    eq @a, 3
+  .call a: 3
+
+test "#4576: function chaining on separate rows", ->
+  do ->
+    Promise
+    .resolve()
+    .then ->
+      yes
+    .then ok
+
+test "#3736: chaining after do IIFE", ->
+  eq 3,
+    do ->
+      a: 3
+    .a
+
+  eq 3,
+    do (b = (c) -> c) -> a: 3
+    ?.a
+
+  b = 3
+  eq 3,
+    do (
+      b
+      {d} = {}
+    ) ->
+      a: b
+    .a
+
+  # preserve existing chaining behavior for non-IIFE `do`
+  b = c: -> 4
+  eq 4,
+    do b
+    .c
+
 </script>
 <script type="text/x-coffeescript" class="test" id="function_invocation">
 # Function Invocation
@@ -8867,12 +9221,26 @@ <h1>CoffeeScript Test Suite</h1>
   arrayEq [2..6], others
   eq 7, last
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  arrayEq [0..4], id id [0..4] ...
+  fn = (a, b, c ..., d) -> [a, b, c, d]
+  range = [0..3]
+  [first, second, others, last] = fn range ..., 4, [5 ... 8] ...
+  eq 0, first
+  eq 1, second
+  arrayEq [2..6], others
+  eq 7, last
+
 test "splat variables are local to the function", ->
   outer = "x"
   clobber = (avar, outer...) -> outer
   clobber "foo", "bar"
   eq "x", outer
 
+test "Issue 4631: left and right spread dots with preceding space", ->
+  a = []
+  f = (a) -> a
+  eq yes, (f ...a) is (f ... a) is (f a...) is (f a ...) is f(a...) is f(...a) is f(a ...) is f(... a)
 
 test "Issue 894: Splatting against constructor-chained functions.", ->
 
@@ -8907,6 +9275,16 @@ <h1>CoffeeScript Test Suite</h1>
       super nums...
   ok (new Child).meth().join(' ') is '3 2 1'
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  class Parent
+    meth: (args ...) ->
+      args
+  class Child extends Parent
+    meth: ->
+      nums = [3, 2, 1]
+      super nums ...
+  ok (new Child).meth().join(' ') is '3 2 1'
+
 
 test "#1011: passing a splat to a method of a number", ->
   eq '1011', 11.toString [2]...
@@ -8914,12 +9292,21 @@ <h1>CoffeeScript Test Suite</h1>
   eq '1011', 69.0.toString [4]...
   eq '1011', (131.0).toString [5]...
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  eq '1011', 11.toString [2] ...
+  eq '1011', (31).toString [3] ...
+  eq '1011', 69.0.toString [4] ...
+  eq '1011', (131.0).toString [5] ...
 
 test "splats and the `new` operator: functions that return `null` should construct their instance", ->
   args = []
   child = new (constructor = -> null) args...
   ok child instanceof constructor
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  child = new (constructor = -> null) args ...
+  ok child instanceof constructor
+
 test "splats and the `new` operator: functions that return functions should construct their return value", ->
   args = []
   fn = ->
@@ -9427,6 +9814,12 @@ <h1>CoffeeScript Test Suite</h1>
   arrayEq [0, 1], (((splat..., _, _1) -> splat) 0, 1, 2, 3)
   arrayEq [2], (((_, _1, splat..., _2) -> splat) 0, 1, 2, 3)
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  arrayEq [0, 1, 2], (((splat ...) -> splat) 0, 1, 2)
+  arrayEq [2, 3], (((_, _1, splat ...) -> splat) 0, 1, 2, 3)
+  arrayEq [0, 1], (((splat ..., _, _1) -> splat) 0, 1, 2, 3)
+  arrayEq [2], (((_, _1, splat ..., _2) -> splat) 0, 1, 2, 3)
+
 test "destructured splatted parameters", ->
   arr = [0,1,2]
   splatArray = ([a...]) -> a
@@ -9434,6 +9827,10 @@ <h1>CoffeeScript Test Suite</h1>
   arrayEq splatArray(arr), arr
   arrayEq splatArrayRest(arr,0,1,2), arr
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  splatArray = ([a ...]) -> a
+  splatArrayRest = ([a ...],b ...) -> arrayEq(a,b); b
+
 test "@-parameters: automatically assign an argument's value to a property of the context", ->
   nonce = {}
 
@@ -9444,10 +9841,18 @@ <h1>CoffeeScript Test Suite</h1>
   ((splat..., @prop) ->).apply context = {}, [0, 0, nonce]
   eq nonce, context.prop
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  ((splat ..., @prop) ->).apply context = {}, [0, 0, nonce]
+  eq nonce, context.prop
+
   # Allow the argument itself to be a splat
   ((@prop...) ->).call context = {}, 0, nonce, 0
   eq nonce, context.prop[1]
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  ((@prop ...) ->).call context = {}, 0, nonce, 0
+  eq nonce, context.prop[1]
+
   # The argument should not be able to be referenced normally
   code = '((@prop) -> prop).call {}'
   doesNotThrow -> CoffeeScript.compile code
@@ -9466,12 +9871,26 @@ <h1>CoffeeScript Test Suite</h1>
   eq a, obj.first
   eq b, obj.last
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  class Klass
+    constructor: (@first, splat ..., @last) ->
+
+  obj = new Klass a, 0, 0, b
+  eq a, obj.first
+  eq b, obj.last
+
 test "destructuring in function definition", ->
   (([{a: [b], c}]...) ->
     eq 1, b
     eq 2, c
   ) {a: [1], c: 2}
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  (([{a: [b], c}] ...) ->
+    eq 1, b
+    eq 2, c
+  ) {a: [1], c: 2}
+
   context = {}
   (([{a: [b, c = 2], @d, e = 4}]...) ->
     eq 1, b
@@ -9515,6 +9934,17 @@ <h1>CoffeeScript Test Suite</h1>
     deepEqual r, {c: 3, d: 4, e: 5}
   ) {a:1, b:2, c:3, d:4, e:5}, 9
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  (({
+      a: p
+      b
+      r ...
+    }, q) ->
+    eq p, 1
+    eq q, 9
+    deepEqual r, {c: 3, d: 4, e: 5}
+  ) {a:1, b:2, c:3, d:4, e:5}, 9
+
   a1={}; b1={}; c1={}; d1={}
   obj1 = {
     a: a1
@@ -9573,6 +10003,10 @@ <h1>CoffeeScript Test Suite</h1>
   fn = ([a = {}]..., b) -> [a, b]
   deepEqual fn(5), [{}, 5]
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  fn = ([a = {}] ..., b) -> [a, b]
+  deepEqual fn(5), [{}, 5]
+
 test "default values", ->
   nonceA = {}
   nonceB = {}
@@ -9616,6 +10050,14 @@ <h1>CoffeeScript Test Suite</h1>
   eq  1, withSplats(1,1,1)
   eq  2, withSplats(1,1,1,1)
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  withSplats = (a = 2, b ..., c = 3, d = 5) -> a * (b.length + 1) * c * d
+  eq 30, withSplats()
+  eq 15, withSplats(1)
+  eq  5, withSplats(1,1)
+  eq  1, withSplats(1,1,1)
+  eq  2, withSplats(1,1,1,1)
+
 test "#156: parameter lists with expansion", ->
   expandArguments = (first, ..., lastButOne, last) ->
     eq 1, first
@@ -9645,6 +10087,12 @@ <h1>CoffeeScript Test Suite</h1>
   eq 0, a
   eq 0, b
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  f = (a, middle ..., b) -> [a, middle, b]
+  arrayEq [1, [2, 3, 4], 5], f 1, 2, 3, 4, 5
+  eq 0, a
+  eq 0, b
+
 test "default values with function calls", ->
   doesNotThrow -> CoffeeScript.compile "(x = f()) ->"
 
@@ -9671,6 +10119,12 @@ <h1>CoffeeScript Test Suite</h1>
   eq 1, a
   eq 2, b
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  f = (@case ...) -> @case
+  [a, b] = f(1, 2)
+  eq 1, a
+  eq 2, b
+
 test "#1574: Destructuring and a parameter named _arg", ->
   f = ({a, b}, _arg, _arg1) -> [a, b, _arg, _arg1]
   arrayEq [1, 2, 3, 4], f a: 1, b: 2, 3, 4
@@ -9789,6 +10243,17 @@ <h1>CoffeeScript Test Suite</h1>
     .then (@result) =>
     .catch handleError
 
+test "#4413: expressions in function parameters that create generated variables have those variables declared correctly", ->
+  'use strict'
+  # We’re in strict mode because we want an error to be thrown if the generated
+  # variable (`ref`) is assigned before being declared.
+  foo = -> null
+  bar = -> 33
+  f = (a = foo() ? bar()) -> a
+  g = (a = foo() ? bar()) -> a + 1
+  eq f(), 33
+  eq g(), 34
+
 </script>
 <script type="text/x-coffeescript" class="test" id="generators">
 # Generators
@@ -13886,6 +14351,19 @@ <h1>CoffeeScript Test Suite</h1>
   arrayEq [], [0...0]
   arrayEq [], [-1...-1]
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  arrayEq [1, 2, 3] , [1 ... 4]
+  arrayEq [0, 1, 2] , [0 ... 3]
+  arrayEq [0, 1]    , [0 ... 2]
+  arrayEq [0]       , [0 ... 1]
+  arrayEq [-1]      , [-1 ... 0]
+  arrayEq [-1, 0]   , [-1 ... 1]
+  arrayEq [-1, 0, 1], [-1 ... 2]
+
+  arrayEq [], [1 ... 1]
+  arrayEq [], [0 ... 0]
+  arrayEq [], [-1 ... -1]
+
 test "downward ranges", ->
   arrayEq shared, [9..0].reverse()
   arrayEq [5, 4, 3, 2] , [5..2]
@@ -13924,6 +14402,9 @@ <h1>CoffeeScript Test Suite</h1>
   arrayEq [2, 3, 4, 5, 6], [(a+1)..2*b]
   arrayEq [2, 3, 4, 5]   , [(a+1)...2*b]
 
+  # Should not trigger implicit call, e.g. rest ... => rest(...)
+  arrayEq [2, 3, 4, 5]   , [(a+1) ... 2*b]
+
 test "large ranges are generated with looping constructs", ->
   down = [99..0]
   eq 100, (len = down.length)
@@ -14396,6 +14877,13 @@ <h1>CoffeeScript Test Suite</h1>
   input.emitLine 'a'
   eq 'undefined', output.lastWrite()
 
+testRepl "#4604: wraps an async function", (input, output) ->
+  return unless global.supportsAsync
+  input.emitLine 'await new Promise (resolve) -> setTimeout (-> resolve 33), 10'
+  setTimeout ->
+    eq '33', output.lastWrite()
+  , 20
+
 process.on 'exit', ->
   try
     fs.unlinkSync historyFile
@@ -14600,6 +15088,18 @@ <h1>CoffeeScript Test Suite</h1>
 test "#2349: inclusive slicing to numeric strings", ->
   arrayEq [0, 1], [0..10][.."1"]
 
+test "#4631: slicing with space before and/or after the dots", ->
+  a = (s) -> s
+  b = [4, 5, 6]
+  c = [7, 8, 9]
+  arrayEq [2, 3, 4], shared[2 ... 5]
+  arrayEq [3, 4, 5], shared[3... 6]
+  arrayEq [4, 5, 6], shared[4 ...7]
+  arrayEq shared[(a b...)...(a c...)]  , shared[(a ...b)...(a ...c)]
+  arrayEq shared[(a b...) ... (a c...)], shared[(a ...b) ... (a ...c)]
+  arrayEq shared[(a b...)... (a c...)] , shared[(a ...b)... (a ...c)]
+  arrayEq shared[(a b...) ...(a c...)] , shared[(a ...b) ...(a ...c)]
+
 
 # Splicing
 
@@ -14833,13 +15333,13 @@ <h1>CoffeeScript Test Suite</h1>
 SourceMap = require '../src/sourcemap'
 
 vlqEncodedValues = [
-    [1, "C"],
-    [-1, "D"],
-    [2, "E"],
-    [-2, "F"],
-    [0, "A"],
-    [16, "gB"],
-    [948, "o7B"]
+    [1, 'C'],
+    [-1, 'D'],
+    [2, 'E'],
+    [-2, 'F'],
+    [0, 'A'],
+    [16, 'gB'],
+    [948, 'o7B']
 ]
 
 test "encodeVlq tests", ->
@@ -14855,27 +15355,27 @@ <h1>CoffeeScript Test Suite</h1>
   map.add [3, 0], [3, 4]
 
   testWithFilenames = map.generate {
-    sourceRoot: ""
-    sourceFiles: ["source.coffee"]
-    generatedFile: "source.js"
+    sourceRoot: ''
+    sourceFiles: ['source.coffee']
+    generatedFile: 'source.js'
   }
 
   deepEqual testWithFilenames, {
     version: 3
-    file: "source.js"
-    sourceRoot: ""
-    sources: ["source.coffee"]
+    file: 'source.js'
+    sourceRoot: ''
+    sources: ['source.coffee']
     names: []
-    mappings: "AAAA;;IACK,GAAC,CAAG;IAET"
+    mappings: 'AAAA;;IACK,GAAC,CAAG;IAET'
   }
 
   deepEqual map.generate(), {
     version: 3
-    file: ""
-    sourceRoot: ""
-    sources: [""]
+    file: ''
+    sourceRoot: ''
+    sources: ['<anonymous>']
     names: []
-    mappings: "AAAA;;IACK,GAAC,CAAG;IAET"
+    mappings: 'AAAA;;IACK,GAAC,CAAG;IAET'
   }
 
   # Look up a generated column - should get back the original source position.
@@ -14884,6 +15384,16 @@ <h1>CoffeeScript Test Suite</h1>
   # Look up a point further along on the same line - should get back the same source position.
   arrayEq map.sourceLocation([2,10]), [1,9]
 
+test "#3075: v3 source map fields", ->
+  { js, v3SourceMap, sourceMap } = CoffeeScript.compile 'console.log Date.now()',
+    filename: 'tempus_fugit.coffee'
+    sourceMap: yes
+    sourceRoot: './www_root/coffee/'
+
+  v3SourceMap = JSON.parse v3SourceMap
+  arrayEq v3SourceMap.sources, ['tempus_fugit.coffee']
+  eq v3SourceMap.sourceRoot, './www_root/coffee/'
+
 </script>
 <script type="text/x-coffeescript" class="test" id="strict">
 # Strict Early Errors
diff --git a/documentation/sections/changelog.md b/documentation/sections/changelog.md
index 18cd2237d9..aaf2f211e9 100644
--- a/documentation/sections/changelog.md
+++ b/documentation/sections/changelog.md
@@ -1,5 +1,21 @@
 ## Changelog
 
+```
+releaseHeader('2017-09-02', '2.0.0-beta5', '2.0.0-beta4')
+```
+
+*	 Node 6 is now supported, and we will try to maintain that as the minimum required version for CoffeeScript 2 via the `coffee` command or Node API. Older versions of Node, or non-evergreen browsers, can compile via the [browser compiler](./browser-compiler/coffeescript.js).
+*	 The command line `--output` flag now allows you to specify an output filename, not just an output folder.
+*	 The command line `--require` flag now properly handles filenames or module names that are invalid identifiers (like an NPM module with a hyphen in the name).
+*	 `Object.assign`, output when object destructuring is used, is polyfilled using the same polyfill that Babel outputs. This means that polyfills shouldn’t be required unless support for Internet Explorer 8 or below is desired (or your own code uses a feature that requires a polyfill). See [ES2015+ Output](#es2015plus-output).
+*	 A string or JSX interpolation that contains only a comment (`"a#{### comment ###}b"` or `<div>{### comment ###}</div>`) is now output (`` `a${/* comment */}b` ``)
+*	 Interpolated strings (ES2015 template literals) that contain quotation marks no longer have the quotation marks escaped: `` `say "${message}"` ``
+*	 It is now possible to chain after a function literal (for example, to define a function and then call `.call` on it).
+*	 The results of the async tests are included in the output when you run `cake test`.
+*	 Bugfixes for object destructuring; expansions in function parameters; generated reference variables in function parameters; chained functions after `do`; splats after existential operator soaks in arrays (`[a?.b...]`); trailing `if` with splat in arrays or function parameters (`[a if b...]`); attempting to `throw` an `if`, `for`, `switch`, `while` or other invalid construct.
+*	 Bugfixes for syntactical edge cases: semicolons after `=` and other “mid-expression” tokens; spaces after `::`; and scripts that begin with `:` or `*`.
+*	 Bugfixes for source maps generated via the Node API; and stack trace line numbers when compiling CoffeeScript via the Node API from within a `.coffee` file.
+
 ```
 releaseHeader('2017-08-03', '2.0.0-beta4', '2.0.0-beta3')
 ```
diff --git a/lib/coffeescript/browser.js b/lib/coffeescript/browser.js
index 8231cc6837..c0c7501479 100644
--- a/lib/coffeescript/browser.js
+++ b/lib/coffeescript/browser.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // This **Browser** compatibility layer extends core CoffeeScript functions
   // to make things work smoothly when compiling code directly in the browser.
diff --git a/lib/coffeescript/cake.js b/lib/coffeescript/cake.js
index 6e29df2216..f602aed8d2 100644
--- a/lib/coffeescript/cake.js
+++ b/lib/coffeescript/cake.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // `cake` is a simplified version of [Make](http://www.gnu.org/software/make/)
   // ([Rake](http://rake.rubyforge.org/), [Jake](https://github.com/280north/jake))
diff --git a/lib/coffeescript/coffeescript.js b/lib/coffeescript/coffeescript.js
index 6d383e9220..491b16e7d4 100644
--- a/lib/coffeescript/coffeescript.js
+++ b/lib/coffeescript/coffeescript.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // CoffeeScript can be used both on the server, as a command-line compiler based
   // on Node.js/V8, or to run CoffeeScript directly in the browser. This module
diff --git a/lib/coffeescript/command.js b/lib/coffeescript/command.js
index 3526c5dda2..c72af0e476 100644
--- a/lib/coffeescript/command.js
+++ b/lib/coffeescript/command.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // The `coffee` utility. Handles command-line compilation of CoffeeScript
   // into various forms: saved into `.js` files or printed to stdout
diff --git a/lib/coffeescript/grammar.js b/lib/coffeescript/grammar.js
index 54f508fb7a..da5f71c11b 100644
--- a/lib/coffeescript/grammar.js
+++ b/lib/coffeescript/grammar.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // The CoffeeScript parser is generated by [Jison](https://github.com/zaach/jison)
   // from this grammar file. Jison is a bottom-up parser generator, similar in
diff --git a/lib/coffeescript/helpers.js b/lib/coffeescript/helpers.js
index 5f84f0885f..46673e4505 100644
--- a/lib/coffeescript/helpers.js
+++ b/lib/coffeescript/helpers.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // This file contains the common helper functions that we'd like to share among
   // the **Lexer**, **Rewriter**, and the **Nodes**. Merge objects, flatten
diff --git a/lib/coffeescript/index.js b/lib/coffeescript/index.js
index e2d639cfe0..c2b45ad2f7 100644
--- a/lib/coffeescript/index.js
+++ b/lib/coffeescript/index.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // Node.js Implementation
   var CoffeeScript, compile, ext, fn, fs, helpers, i, len, path, ref, vm,
diff --git a/lib/coffeescript/lexer.js b/lib/coffeescript/lexer.js
index 3a25018966..886a3854d7 100644
--- a/lib/coffeescript/lexer.js
+++ b/lib/coffeescript/lexer.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // The CoffeeScript Lexer. Uses a series of token-matching regexes to attempt
   // matches against the beginning of the source code. When a match is found,
diff --git a/lib/coffeescript/nodes.js b/lib/coffeescript/nodes.js
index d36eec5885..3a87f604f6 100644
--- a/lib/coffeescript/nodes.js
+++ b/lib/coffeescript/nodes.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // `nodes.coffee` contains all of the node classes for the syntax tree. Most
   // nodes are created as the result of actions in the [grammar](grammar.html),
diff --git a/lib/coffeescript/optparse.js b/lib/coffeescript/optparse.js
index c9c88e0cf9..07ad58fe37 100644
--- a/lib/coffeescript/optparse.js
+++ b/lib/coffeescript/optparse.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   var LONG_FLAG, MULTI_FLAG, OPTIONAL, OptionParser, SHORT_FLAG, buildRule, buildRules, normalizeArguments, repeat,
     slice = [].slice;
diff --git a/lib/coffeescript/parser.js b/lib/coffeescript/parser.js
old mode 100755
new mode 100644
diff --git a/lib/coffeescript/register.js b/lib/coffeescript/register.js
index 91a1000597..311d1d1a67 100644
--- a/lib/coffeescript/register.js
+++ b/lib/coffeescript/register.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   var CoffeeScript, Module, binary, child_process, ext, findExtension, fork, helpers, i, len, loadFile, path, ref;
 
diff --git a/lib/coffeescript/repl.js b/lib/coffeescript/repl.js
index 8b16d09b59..3bd198c5ff 100644
--- a/lib/coffeescript/repl.js
+++ b/lib/coffeescript/repl.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   var CoffeeScript, addHistory, addMultilineHandler, fs, getCommandId, merge, nodeREPL, path, replDefaults, runInContext, sawSIGINT, updateSyntaxError, vm;
 
diff --git a/lib/coffeescript/rewriter.js b/lib/coffeescript/rewriter.js
index 0c4f4e36c4..91954a60d2 100644
--- a/lib/coffeescript/rewriter.js
+++ b/lib/coffeescript/rewriter.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // The CoffeeScript language has a good deal of optional syntax, implicit syntax,
   // and shorthand syntax. This can greatly complicate a grammar and bloat
diff --git a/lib/coffeescript/scope.js b/lib/coffeescript/scope.js
index 5b9f0377bc..39f0b205c3 100644
--- a/lib/coffeescript/scope.js
+++ b/lib/coffeescript/scope.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // The **Scope** class regulates lexical scoping within CoffeeScript. As you
   // generate code, you create a tree of scopes in the same shape as the nested
diff --git a/lib/coffeescript/sourcemap.js b/lib/coffeescript/sourcemap.js
index 892f69edfb..90b906ccfe 100644
--- a/lib/coffeescript/sourcemap.js
+++ b/lib/coffeescript/sourcemap.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 2.0.0-beta4
+// Generated by CoffeeScript 2.0.0-beta5
 (function() {
   // Source maps allow JavaScript runtimes to match running JavaScript back to
   // the original source code that corresponds to it. This can be minified
diff --git a/package.json b/package.json
index 2e0ec9b6f5..bad79dfdec 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "compiler"
   ],
   "author": "Jeremy Ashkenas",
-  "version": "2.0.0-beta4",
+  "version": "2.0.0-beta5",
   "license": "MIT",
   "engines": {
     "node": ">=6"