Bump esbuild from 0.20.0 to 0.20.1

[dependabot[bot]]

Bumps esbuild from 0.20.0 to 0.20.1.

Release notes

Sourced from esbuild's releases.

v0.20.1

• Fix a bug with the CSS nesting transform (#3648)

  This release fixes a bug with the CSS nesting transform for older browsers where the generated CSS could be incorrect if a selector list contained a pseudo element followed by another selector. The bug was caused by incorrectly mutating the parent rule's selector list when filtering out pseudo elements for the child rules:

  /* Original code */
  .foo {
    &:after,
    & .bar {
      color: red;
    }
  }
  /* Old output (with --supported:nesting=false) */
  .foo .bar,
  .foo .bar {
  color: red;
  }
  /* New output (with --supported:nesting=false) */
  .foo:after,
  .foo .bar {
  color: red;
  }
  

• Constant folding for JavaScript inequality operators (#3645)

  This release introduces constant folding for the < > <= >= operators. The minifier will now replace these operators with true or false when both sides are compile-time numeric or string constants:

  // Original code
  console.log(1 < 2, '🍕' > '🧀')
  // Old output (with --minify)
  console.log(1<2,"🍕">"🧀");
  // New output (with --minify)
  console.log(!0,!1);
  

• Better handling of __proto__ edge cases (#3651)

  JavaScript object literal syntax contains a special case where a non-computed property with a key of __proto__ sets the prototype of the object. This does not apply to computed properties or to properties that use the shorthand property syntax introduced in ES6. Previously esbuild didn't correctly preserve the "sets the prototype" status of properties inside an object literal, meaning a property that sets the prototype could accidentally be transformed into one that doesn't and vice versa. This has now been fixed:

  // Original code
  function foo(__proto__) {
    return { __proto__: __proto__ } // Note: sets the prototype
  

... (truncated)

Changelog

Sourced from esbuild's changelog.

0.20.1

• Fix a bug with the CSS nesting transform (#3648)

  This release fixes a bug with the CSS nesting transform for older browsers where the generated CSS could be incorrect if a selector list contained a pseudo element followed by another selector. The bug was caused by incorrectly mutating the parent rule's selector list when filtering out pseudo elements for the child rules:

  /* Original code */
  .foo {
    &:after,
    & .bar {
      color: red;
    }
  }
  /* Old output (with --supported:nesting=false) */
  .foo .bar,
  .foo .bar {
  color: red;
  }
  /* New output (with --supported:nesting=false) */
  .foo:after,
  .foo .bar {
  color: red;
  }
  

• Constant folding for JavaScript inequality operators (#3645)

  This release introduces constant folding for the < > <= >= operators. The minifier will now replace these operators with true or false when both sides are compile-time numeric or string constants:

  // Original code
  console.log(1 < 2, '🍕' > '🧀')
  // Old output (with --minify)
  console.log(1<2,"🍕">"🧀");
  // New output (with --minify)
  console.log(!0,!1);
  

• Better handling of __proto__ edge cases (#3651)

  JavaScript object literal syntax contains a special case where a non-computed property with a key of __proto__ sets the prototype of the object. This does not apply to computed properties or to properties that use the shorthand property syntax introduced in ES6. Previously esbuild didn't correctly preserve the "sets the prototype" status of properties inside an object literal, meaning a property that sets the prototype could accidentally be transformed into one that doesn't and vice versa. This has now been fixed:

  // Original code
  function foo(__proto__) {
  

... (truncated)

Commits

• 9f9e4f8 publish 0.20.1 to npm
• ac36537 fix #3651: handle __proto__ edge cases better
• 555db48 fix #3645: constant folding for \< > \<= >=
• 5650831 fix #3650: add a wrapper for float64 math
• d086889 fix some lints
• ad3d8c6 fix #3648: copy selectors before checking children
• a08f30d fix #3634: crash if resolving with bad source dir
• See full diff in compare view

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