Sourced from esbuild's releases.

v0.27.7

• Fix lowering of define semantics for TypeScript parameter properties (#4421)

  The previous release incorrectly generated class fields for TypeScript parameter properties even when the configured target environment does not support class fields. With this release, the generated class fields will now be correctly lowered in this case:

  // Original code
  class Foo {
    constructor(public x = 1) {}
    y = 2
  }
  // Old output (with --loader=ts --target=es2021)
  class Foo {
  constructor(x = 1) {
  this.x = x;
  __publicField(this, "y", 2);
  }
  x;
  }
  // New output (with --loader=ts --target=es2021)
  class Foo {
  constructor(x = 1) {
  __publicField(this, "x", x);
  __publicField(this, "y", 2);
  }
  }

v0.27.5

• Fix for an async generator edge case (#4401, #4417)

  Support for transforming async generators into the equivalent state machine was added in version 0.19.0. However, the generated state machine didn't work correctly when polling async generators concurrently, such as in the following code:

  async function* inner() { yield 1; yield 2 }
  async function* outer() { yield* inner() }
  let gen = outer()
  for await (let x of [gen.next(), gen.next()]) console.log(x)

  Previously esbuild's output of the above code behaved incorrectly when async generators were transformed (such as with --supported:async-generator=false). The transformation should be fixed starting with this release.

  This fix was contributed by @​2767mr.

• Fix a regression when metafile is enabled (#4420, #4418)

  This release fixes a regression introduced by the previous release. When metafile: true was enabled in esbuild's JavaScript API, builds with build errors were incorrectly throwing an error about an empty JSON string instead of an object containing the build errors.

... (truncated)

Sourced from esbuild's changelog.

0.27.7

• Fix lowering of define semantics for TypeScript parameter properties (#4421)

  The previous release incorrectly generated class fields for TypeScript parameter properties even when the configured target environment does not support class fields. With this release, the generated class fields will now be correctly lowered in this case:

  // Original code
  class Foo {
    constructor(public x = 1) {}
    y = 2
  }
  // Old output (with --loader=ts --target=es2021)
  class Foo {
  constructor(x = 1) {
  this.x = x;
  __publicField(this, "y", 2);
  }
  x;
  }
  // New output (with --loader=ts --target=es2021)
  class Foo {
  constructor(x = 1) {
  __publicField(this, "x", x);
  __publicField(this, "y", 2);
  }
  }

0.27.5

• Fix for an async generator edge case (#4401, #4417)

  Support for transforming async generators into the equivalent state machine was added in version 0.19.0. However, the generated state machine didn't work correctly when polling async generators concurrently, such as in the following code:

  async function* inner() { yield 1; yield 2 }
  async function* outer() { yield* inner() }
  let gen = outer()
  for await (let x of [gen.next(), gen.next()]) console.log(x)

  Previously esbuild's output of the above code behaved incorrectly when async generators were transformed (such as with --supported:async-generator=false). The transformation should be fixed starting with this release.

  This fix was contributed by @​2767mr.

• Fix a regression when metafile is enabled (#4420, #4418)

... (truncated)

• 2025c9f publish 0.27.7 to npm
• c6b586e fix typo in Makefile for @esbuild/win32-x64
• 9785e14 publish 0.27.6 to npm
• b169d8c Revert "update go 1.25.7 => 1.26.1"
• 7ac8762 run make update-compat-table
• 8b5ff53 remove an incorrect else
• e955268 fix #4421: lower generated class fields if needed
• a5a2500 ci: move make test-old-ts
• b71e7ac omit go's buildvcs for more reproducible builds
• 7406b09 organize make platform-all output in Makefile
• Additional commits viewable in compare view