Create a bundled release of Bootstrap with Popper.js inside

.babelrc

@@ -8,7 +8,5 @@
       }
     ]
   ],
-  "plugins": [
-    "transform-es2015-modules-strip"
-  ]
+  "plugins": ["external-helpers"]
 }

build/rollup.config.js

@@ -0,0 +1,43 @@
+const path    = require('path')
+const babel   = require('rollup-plugin-babel')
+const resolve = require('rollup-plugin-node-resolve')
+const BUNDLE  = process.env.BUNDLE === 'true'
+
+var fileDest  = 'bootstrap.js'
+var external  = ['jquery', 'popper.js']
+const plugins = [
+  babel({
+    exclude: 'node_modules/**', // only transpile our source code
+    externalHelpersWhitelist: [ // include only required helpers
+      'typeof',
+      'classCallCheck',
+      'createClass',
+      'inherits',
+      'possibleConstructorReturn'
+    ]
+  })
+]
+const globals = {
+  jquery: '$',
+  'popper.js': 'Popper'
+}
+
+if (BUNDLE) {
+  fileDest = 'bootstrap.bundle.js'
+  // remove last entry in external array to bundle Popper
+  external.pop()
+  delete globals['popper.js']
+  plugins.push(resolve())
+}
+
+module.exports = {
+  input: path.resolve(__dirname, '../js/src/index.js'),
+  output: {
+    file: path.resolve(__dirname, `../dist/js/${fileDest}`),
+    format: 'iife'
+  },
+  name: 'bootstrap',
+  external: external,
+  globals: globals,
+  plugins: plugins
+}

build/stamp.js

@@ -1,41 +1,19 @@
-const fs = require('fs')
+const fs   = require('fs')
+const path = require('path')
+const pkg  = require(path.resolve(__dirname, '../package.json'))
+const year = new Date().getFullYear()
 
-fs.readFile('package.json', (err, data) => {
-  if (err) {
-    throw err
-  }
+const pathBoostrap        = path.resolve(__dirname, '../dist/js/bootstrap.js')
+const pathBootstrapBundle = path.resolve(__dirname, '../dist/js/bootstrap.bundle.js')
+const contentFile         = fs.readFileSync(pathBoostrap, { encoding: 'UTF8' })
+const contentBundleFile   = fs.readFileSync(pathBootstrapBundle, { encoding: 'UTF8' })
 
-  const pkg = JSON.parse(data)
-  const year = new Date().getFullYear()
-
-  const stampTop =
+const stamp =
 `/*!
  * Bootstrap v${pkg.version} (${pkg.homepage})
  * Copyright 2011-${year} ${pkg.author}
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
-
-if (typeof jQuery === 'undefined') {
-  throw new Error('Bootstrap\\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\\'s JavaScript.')
-}
-
-(function ($) {
-  var version = $.fn.jquery.split(' ')[0].split('.')
-  if ((version[0] < 3) || (version[0] >= 4)) {
-    throw new Error('Bootstrap\\'s JavaScript requires at least jQuery v3.0.0 but less than v4.0.0')
-  }
-})(jQuery);
-
-(function () {
 `
-  const stampEnd = `
-})();`
-
-  process.stdout.write(stampTop)
-
-  process.stdin.on('end', () => {
-    process.stdout.write(stampEnd)
-  })
-
-  process.stdin.pipe(process.stdout)
-})
+fs.writeFileSync(pathBoostrap, `${stamp}${contentFile}`, { encoding: 'UTF8' })
+fs.writeFileSync(pathBootstrapBundle, `${stamp}${contentBundleFile}`, { encoding: 'UTF8' })

js/src/alert.js

@@ -1,3 +1,4 @@
+import $ from 'jquery'
 import Util from './util'
 
 
@@ -8,7 +9,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const Alert = (($) => {
+const Alert = (() => {
 
 
   /**

js/src/button.js

@@ -1,11 +1,12 @@
+import $ from 'jquery'
 /**
  * --------------------------------------------------------------------------
  * Bootstrap (v4.0.0-beta): button.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
 
-const Button = (($) => {
+const Button = (() => {
 
 
   /**

js/src/carousel.js

@@ -1,3 +1,4 @@
+import $ from 'jquery'
 import Util from './util'
 
 
@@ -8,7 +9,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const Carousel = (($) => {
+const Carousel = (() => {
 
 
   /**

js/src/collapse.js

@@ -1,3 +1,4 @@
+import $ from 'jquery'
 import Util from './util'
 
 
@@ -8,7 +9,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const Collapse = (($) => {
+const Collapse = (() => {
 
 
   /**

js/src/dropdown.js

@@ -1,5 +1,5 @@
-/* global Popper */
-
+import $ from 'jquery'
+import Popper from 'popper.js'
 import Util from './util'
 
 
@@ -10,7 +10,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const Dropdown = (($) => {
+const Dropdown = (() => {
 
   /**
    * Check for Popper dependency
@@ -445,6 +445,6 @@ const Dropdown = (($) => {
 
   return Dropdown
 
-})(jQuery)
+})(jQuery, Popper)
 
 export default Dropdown

js/src/index.js

@@ -0,0 +1,46 @@
+import $ from 'jquery'
+import Alert from './alert'
+import Button from './button'
+import Carousel from './carousel'
+import Collapse from './collapse'
+import Dropdown from './dropdown'
+import Modal from './modal'
+import Popover from './popover'
+import Scrollspy from './scrollspy'
+import Tab from './tab'
+import Tooltip from './tooltip'
+import Util from './util'
+
+/**
+ * --------------------------------------------------------------------------
+ * Bootstrap (v4.0.0-alpha.6): index.js
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * --------------------------------------------------------------------------
+ */
+
+if (typeof jQuery === 'undefined') {
+  throw new Error('Bootstrap\'s JavaScript requires jQuery. jQuery must be included before Bootstrap\'s JavaScript.')
+}
+
+(() => {
+  const version = $.fn.jquery.split(' ')[0].split('.')
+  const min = 3
+  const max = 4
+  if (version[0] < min || version[0] >= max) {
+    throw new Error('Bootstrap\'s JavaScript requires at least jQuery v3.0.0 but less than v4.0.0')
+  }
+})(jQuery)
+
+export {
+  Util,
+  Alert,
+  Button,
+  Carousel,
+  Collapse,
+  Dropdown,
+  Modal,
+  Popover,
+  Scrollspy,
+  Tab,
+  Tooltip
+}

js/src/modal.js

@@ -1,3 +1,4 @@
+import $ from 'jquery'
 import Util from './util'
 
 
@@ -8,7 +9,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const Modal = (($) => {
+const Modal = (() => {
 
 
   /**

js/src/popover.js

@@ -1,3 +1,4 @@
+import $ from 'jquery'
 import Tooltip from './tooltip'
 
 
@@ -8,7 +9,7 @@ import Tooltip from './tooltip'
  * --------------------------------------------------------------------------
  */
 
-const Popover = (($) => {
+const Popover = (() => {
 
 
   /**

js/src/scrollspy.js

@@ -1,3 +1,4 @@
+import $ from 'jquery'
 import Util from './util'
 
 
@@ -8,7 +9,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const ScrollSpy = (($) => {
+const ScrollSpy = (() => {
 
 
   /**

js/src/tab.js

@@ -1,3 +1,4 @@
+import $ from 'jquery'
 import Util from './util'
 
 
@@ -8,7 +9,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const Tab = (($) => {
+const Tab = (() => {
 
 
   /**

js/src/tooltip.js

@@ -1,5 +1,5 @@
-/* global Popper */
-
+import $ from 'jquery'
+import Popper from 'popper.js'
 import Util from './util'
 
 
@@ -10,7 +10,7 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const Tooltip = (($) => {
+const Tooltip = (() => {
 
   /**
    * Check for Popper dependency
@@ -728,6 +728,6 @@ const Tooltip = (($) => {
 
   return Tooltip
 
-})(jQuery)
+})(jQuery, Popper)
 
 export default Tooltip

js/src/util.js

@@ -1,11 +1,13 @@
+import $ from 'jquery'
+
 /**
  * --------------------------------------------------------------------------
  * Bootstrap (v4.0.0-beta): util.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
 
-const Util = (($) => {
+const Util = (() => {
 
 
   /**

js/tests/.eslintrc.json

@@ -28,6 +28,7 @@
     "global-require": "off",
     "no-process-env": "off",
     "no-process-exit": "off",
+    "no-sync": "off",
 
     // Stylistic Issues
     "brace-style": "off",