build(deps-dev): bump esbuild from 0.14.46 to 0.14.47

[dependabot]

Bumps esbuild from 0.14.46 to 0.14.47.

Release notes

Sourced from esbuild's releases.

v0.14.47

• Make global names more compact when ||= is available (#2331)

  With this release, the code esbuild generates for the --global-name= setting is now slightly shorter when you don't configure esbuild such that the ||= operator is unsupported (e.g. with --target=chrome80 or --supported:logical-assignment=false):

  // Original code
  exports.foo = 123
  // Old output (with --format=iife --global-name=foo.bar.baz --minify)
  var foo=foo||{};foo.bar=foo.bar||{};foo.bar.baz=(()=>{var b=(a,o)=>()=>(o||a((o={exports:{}}).exports,o),o.exports);var c=b(f=>{f.foo=123});return c();})();
  // New output (with --format=iife --global-name=foo.bar.baz --minify)
  var foo;((foo||={}).bar||={}).baz=(()=>{var b=(a,o)=>()=>(o||a((o={exports:{}}).exports,o),o.exports);var c=b(f=>{f.foo=123});return c();})();

• Fix --mangle-quoted=false with --minify-syntax=true

  If property mangling is active and --mangle-quoted is disabled, quoted properties are supposed to be preserved. However, there was a case when this didn't happen if --minify-syntax was enabled, since that internally transforms x['y'] into x.y to reduce code size. This issue has been fixed:

  // Original code
  x.foo = x['bar'] = { foo: y, 'bar': z }
  // Old output (with --mangle-props=. --mangle-quoted=false --minify-syntax=true)
  x.a = x.b = { a: y, bar: z };
  // New output (with --mangle-props=. --mangle-quoted=false --minify-syntax=true)
  x.a = x.bar = { a: y, bar: z };

  Notice how the property foo is always used unquoted but the property bar is always used quoted, so foo should be consistently mangled while bar should be consistently not mangled.

• Fix a minification bug regarding this and property initializers

  When minification is enabled, esbuild attempts to inline the initializers of variables that have only been used once into the start of the following expression to reduce code size. However, there was a bug where this transformation could change the value of this when the initializer is a property access and the start of the following expression is a call expression. This release fixes the bug:

  // Original code
  function foo(obj) {
    let fn = obj.prop;
    fn();
  }
  // Old output (with --minify)
  function foo(f){f.prop()}
  // New output (with --minify)
  function foo(o){let f=o.prop;f()}

Changelog

Sourced from esbuild's changelog.

0.14.47

• Make global names more compact when ||= is available (#2331)

  With this release, the code esbuild generates for the --global-name= setting is now slightly shorter when you don't configure esbuild such that the ||= operator is unsupported (e.g. with --target=chrome80 or --supported:logical-assignment=false):

  // Original code
  exports.foo = 123
  // Old output (with --format=iife --global-name=foo.bar.baz --minify)
  var foo=foo||{};foo.bar=foo.bar||{};foo.bar.baz=(()=>{var b=(a,o)=>()=>(o||a((o={exports:{}}).exports,o),o.exports);var c=b(f=>{f.foo=123});return c();})();
  // New output (with --format=iife --global-name=foo.bar.baz --minify)
  var foo;((foo||={}).bar||={}).baz=(()=>{var b=(a,o)=>()=>(o||a((o={exports:{}}).exports,o),o.exports);var c=b(f=>{f.foo=123});return c();})();

• Fix --mangle-quoted=false with --minify-syntax=true

  If property mangling is active and --mangle-quoted is disabled, quoted properties are supposed to be preserved. However, there was a case when this didn't happen if --minify-syntax was enabled, since that internally transforms x['y'] into x.y to reduce code size. This issue has been fixed:

  // Original code
  x.foo = x['bar'] = { foo: y, 'bar': z }
  // Old output (with --mangle-props=. --mangle-quoted=false --minify-syntax=true)
  x.a = x.b = { a: y, bar: z };
  // New output (with --mangle-props=. --mangle-quoted=false --minify-syntax=true)
  x.a = x.bar = { a: y, bar: z };

  Notice how the property foo is always used unquoted but the property bar is always used quoted, so foo should be consistently mangled while bar should be consistently not mangled.

• Fix a minification bug regarding this and property initializers

  When minification is enabled, esbuild attempts to inline the initializers of variables that have only been used once into the start of the following expression to reduce code size. However, there was a bug where this transformation could change the value of this when the initializer is a property access and the start of the following expression is a call expression. This release fixes the bug:

  // Original code
  function foo(obj) {
    let fn = obj.prop;
    fn();
  }
  // Old output (with --minify)
  function foo(f){f.prop()}
  // New output (with --minify)
  function foo(o){let f=o.prop;f()}

... (truncated)

Commits

• 20f4b45 publish 0.14.47 to npm
• f3c6248 fix minify bug with variable inlining and this
• 1dd274d fix --mangle-quoted=false with --minify-syntax
• f808dab fix #2331: use ||= to make global names shorter
• See full diff in compare view

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[andrewmcodes]

@dependabot rebase