update terser to 5.27.0

.github/workflows/ruby.yml

@@ -16,16 +16,16 @@ jobs:
       fail-fast: true
       matrix:
         include:
-          - { ruby: 2.7, c-o-e: false }
           - { ruby: '3.0', c-o-e: false }
           - { ruby: 3.1, c-o-e: false }
           - { ruby: 3.2, c-o-e: false }
+          - { ruby: 3.3, c-o-e: false }
           - { ruby: jruby-9.4.5.0, c-o-e: false }
           - { ruby: ruby-head, c-o-e: true }
           - { ruby: jruby-head, c-o-e: true }
           - { ruby: truffleruby, c-o-e: true }
           - { ruby: truffleruby-head, c-o-e: true }
-          - { ruby: 3.2, gemfile: ./gemfiles/miniracer, c-o-e: false }
+          - { ruby: 3.3, gemfile: ./gemfiles/miniracer, c-o-e: false }
     steps:
     - uses: actions/checkout@v3
     - name: Set up Ruby

.rubocop.yml

@@ -310,6 +310,48 @@ Style/RedundantStringEscape: # new in 1.37
   Enabled: true
 Style/SelectByRegexp: # new in 1.22
   Enabled: true
+Lint/DuplicateMatchPattern: # new in 1.50
+  Enabled: true
+Lint/ItWithoutArgumentsInBlock: # new in 1.59
+  Enabled: true
+Lint/LiteralAssignmentInCondition: # new in 1.58
+  Enabled: true
+Lint/MixedCaseRange: # new in 1.53
+  Enabled: true
+Lint/RedundantRegexpQuantifiers: # new in 1.53
+  Enabled: true
+Metrics/CollectionLiteralLength: # new in 1.47
+  Enabled: true
+Style/DataInheritance: # new in 1.49
+  Enabled: true
+Style/DirEmpty: # new in 1.48
+  Enabled: true
+Style/ExactRegexpMatch: # new in 1.51
+  Enabled: true
+Style/FileEmpty: # new in 1.48
+  Enabled: true
+Style/RedundantArrayConstructor: # new in 1.52
+  Enabled: true
+Style/RedundantCurrentDirectoryInPath: # new in 1.53
+  Enabled: true
+Style/RedundantFilterChain: # new in 1.52
+  Enabled: true
+Style/RedundantLineContinuation: # new in 1.49
+  Enabled: true
+Style/RedundantRegexpArgument: # new in 1.53
+  Enabled: true
+Style/RedundantRegexpConstructor: # new in 1.52
+  Enabled: true
+Style/ReturnNilInPredicateMethodDefinition: # new in 1.53
+  Enabled: true
+Style/SingleLineDoEndBlock: # new in 1.57
+  Enabled: true
+Style/SuperWithArgsParentheses: # new in 1.58
+  Enabled: true
+Style/YAMLFileRead: # new in 1.53
+  Enabled: true
+Performance/MapMethodChain: # new in 1.19
+  Enabled: true
 
 Performance/AncestorsInclude:
   Enabled: true

CHANGELOG.md

@@ -1,4 +1,11 @@
 ## Unreleased
+## 1.2.0 (22 January 2024)
+- update TerserJS to [5.27.0]
+- remove sourcemap patches
+- `pure_new` option added
+- EOL rubies are no longer tested
+- update rubocop
+
 ## 1.1.20 (27 November 2023)
 - update TerserJS to [5.24.0]
 - fix mangle properties, thanks @khaitu!

Gemfile

@@ -4,9 +4,9 @@ source "https://rubygems.org"
 
 gemspec
 
-unless RUBY_VERSION < '2.6'
+unless RUBY_VERSION < '2.7'
   group :development do
-    gem 'rubocop', '~> 1.46.0'
-    gem 'rubocop-performance', '~> 1.16.0', :require => false
+    gem 'rubocop', '~> 1.60.1'
+    gem 'rubocop-performance', '~> 1.20.2', :require => false
   end
 end

Rakefile

@@ -54,8 +54,6 @@ namespace :terser do
 
     cd 'vendor/terser/' do
       FileUtils.rm_rf("package-lock.json")
-      `patch -p1 -i ../../patches/terser-sync.patch`
-      `patch -p1 -i ../../patches/revert-source-maps.patch`
       `npm install --no-package-lock --no-save`
     end
 

lib/terser.rb

@@ -79,6 +79,7 @@ class Error < StandardError; end
       :negate_iife => true, # Negate immediately invoked function expressions to avoid extra parens
       :pure_getters => false, # Assume that object property access does not have any side-effects
       :pure_funcs => nil, # List of functions without side-effects. Can safely discard function calls when the result value is not used
+      :pure_new => false, # List of functions without side-effects. Can safely discard function calls when the result value is not used
       :drop_console => false, # Drop calls to console.* functions
       :keep_fargs => false, # Preserve unused function arguments
       :keep_classnames => false, # Prevents discarding or mangling of class names. Pass a regular expression to only keep class names matching that regex.

lib/terser/version.rb

@@ -2,5 +2,5 @@
 
 class Terser
   # Current version of Terser.
-  VERSION = "1.1.20"
+  VERSION = "1.2.0"
 end

lib/terser_wrapper.js

@@ -49,7 +49,7 @@ function terser_wrapper(options) {
   inputs[inputFilename] = source;
 
   try {
-    return Terser.minifySync(inputs, options, null);
+    return Terser.minify_sync(inputs, options, null);
   } catch (error) {
     const { message, filename, line, col, pos } = error;
     return {error: {message: message, filename: filename, line: line, col: col, pos: pos}}

spec/terser_spec.rb

@@ -313,6 +313,27 @@
     end
   end
 
+  describe 'pure_new' do
+    let(:code) do
+      <<-JS
+        new function() {};
+        (new function() {
+          this.pass = () => console.log("PASS");
+        }).pass()
+      JS
+    end
+
+    it "when compress option is set" do
+      minified = Terser.compile(code, :compress => { :pure_new => true })
+      expect(minified).to match("(new function(){this.pass=()=>console.log(\"PASS\")}).pass();")
+    end
+
+    it "when compress option is false" do
+      minified = Terser.compile(code, :compress => { :pure_new => false })
+      expect(minified).to match("new function(){},(new function(){this.pass=()=>console.log(\"PASS\")}).pass();")
+    end
+  end
+
   it "can be configured to output only ASCII" do
     code = "function emoji() { return '\\ud83c\\ude01'; }"
     minified = Terser.compile(code, :output => { :ascii_only => true })