chore(deps): bump esbuild from 0.12.18 to 0.12.19

[dependabot]

Bumps esbuild from 0.12.18 to 0.12.19.

Release notes

Sourced from esbuild's releases.

v0.12.19

• Add support for CSS source maps (#519)

  With this release, esbuild will now generate source maps for CSS output files when --sourcemap is enabled. This supports all of the same options as JS source maps including --sourcemap=inline and --sourcemap=external. In addition, CSS input files with embedded /*# sourceMappingURL=... */ comments will cause the CSS output file source map to map all the way back to the original inputs. CSS source maps are used by the browser's style inspector to link back to the original source code instead of linking to the bundled source code.

• Fix computed class fields in TypeScript edge case (#1507)

  If TypeScript code contains computed class fields, the target environment supports class fields so syntax lowering is not necessary, and TypeScript's useDefineForClassFields setting is set to true, then esbuild had a bug where the computed property names were computed after the class definition and were undefined. Note that TypeScript's useDefineForClassFields setting defaults to true if tsconfig.json contains "target": "ESNext".

  // Original code
  class Foo {
    [foo] = 1;
    @bar [baz] = 2;
  }
  // Old output
  var _a, _b;
  var Foo = class {
  [_a] = 1;
  [_b] = 2;
  };
  _a = foo, _b = baz;
  __decorateClass([
  bar
  ], Foo.prototype, _b, 2);
  // New output
  var _a;
  var Foo = class {
  [foo] = 1;
  [_a = baz] = 2;
  };
  __decorateClass([
  bar
  ], Foo.prototype, _a, 2);

  The problem in this case is that normally TypeScript moves class field initializers into the special constructor method (automatically generating one if one doesn't already exist) so the side effects for class field property names must happen after the class body. But if class fields are supported by the target environment then the side effects must happen inline instead.

Changelog

Sourced from esbuild's changelog.

0.12.19

• Add support for CSS source maps (#519)

  With this release, esbuild will now generate source maps for CSS output files when --sourcemap is enabled. This supports all of the same options as JS source maps including --sourcemap=inline and --sourcemap=external. In addition, CSS input files with embedded /*# sourceMappingURL=... */ comments will cause the CSS output file source map to map all the way back to the original inputs. CSS source maps are used by the browser's style inspector to link back to the original source code instead of linking to the bundled source code.

• Fix computed class fields in TypeScript edge case (#1507)

  If TypeScript code contains computed class fields, the target environment supports class fields so syntax lowering is not necessary, and TypeScript's useDefineForClassFields setting is set to true, then esbuild had a bug where the computed property names were computed after the class definition and were undefined. Note that TypeScript's useDefineForClassFields setting defaults to true if tsconfig.json contains "target": "ESNext".

  // Original code
  class Foo {
    [foo] = 1;
    @bar [baz] = 2;
  }
  // Old output
  var _a, _b;
  var Foo = class {
  [_a] = 1;
  [_b] = 2;
  };
  _a = foo, _b = baz;
  __decorateClass([
  bar
  ], Foo.prototype, _b, 2);
  // New output
  var _a;
  var Foo = class {
  [foo] = 1;
  [_a = baz] = 2;
  };
  __decorateClass([
  bar
  ], Foo.prototype, _a, 2);

  The problem in this case is that normally TypeScript moves class field initializers into the special constructor method (automatically generating one if one doesn't already exist) so the side effects for class field property names must happen after the class body. But if class fields are supported by the target environment then the side effects must happen inline instead.

Commits

• 8095e75 publish 0.12.19 to npm
• e4fc1ce fix #1507: wrong ts class field side effect order
• 89a3afb fix #519: release notes for css source maps
• 3ead19b add a basic css source map test
• 8923587 add extension to source map tests
• 0b98203 css: add support for source maps
• 4002228 move span object to logger
• 17d0fb6 css: printer returns result object
• b44071b css: add location info to rules
• 9d4ddac move source map code to source map module
• See full diff in compare view

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[codecov]

Codecov Report

Merging #36 (e6d5049) into main (a31a912) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #36   +/-   ##
=======================================
  Coverage   99.66%   99.66%           
=======================================
  Files          11       11           
  Lines         884      884           
=======================================
  Hits          881      881           
  Misses          3        3           

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