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@dependabot dependabot bot commented on behalf of github Aug 10, 2025

Bumps esbuild to 0.25.8 and updates ancestor dependency tsup. These dependencies need to be updated together.

Updates esbuild from 0.12.29 to 0.25.8

Release notes

Sourced from esbuild's releases.

v0.25.8

  • Fix another TypeScript parsing edge case (#4248)

    This fixes a regression with a change in the previous release that tries to more accurately parse TypeScript arrow functions inside the ?: operator. The regression specifically involves parsing an arrow function containing a #private identifier inside the middle of a ?: ternary operator inside a class body. This was fixed by propagating private identifier state into the parser clone used to speculatively parse the arrow function body. Here is an example of some affected code:

    class CachedDict {
      #has = (a: string) => dict.has(a);
      has = window
        ? (word: string): boolean => this.#has(word)
        : this.#has;
    }
  • Fix a regression with the parsing of source phase imports

    The change in the previous release to parse source phase imports failed to properly handle the following cases:

    import source from 'bar'
    import source from from 'bar'
    import source type foo from 'bar'

    Parsing for these cases should now be fixed. The first case was incorrectly treated as a syntax error because esbuild was expecting the second case. And the last case was previously allowed but is now forbidden. TypeScript hasn't added this feature yet so it remains to be seen whether the last case will be allowed, but it's safer to disallow it for now. At least Babel doesn't allow the last case when parsing TypeScript, and Babel was involved with the source phase import specification.

v0.25.7

  • Parse and print JavaScript imports with an explicit phase (#4238)

    This release adds basic syntax support for the defer and source import phases in JavaScript:

    • defer

      This is a stage 3 proposal for an upcoming JavaScript feature that will provide one way to eagerly load but lazily initialize imported modules. The imported module is automatically initialized on first use. Support for this syntax will also be part of the upcoming release of TypeScript 5.9. The syntax looks like this:

      import defer * as foo from "<specifier>";
      const bar = await import.defer("<specifier>");

      Note that this feature deliberately cannot be used with the syntax import defer foo from "<specifier>" or import defer { foo } from "<specifier>".

    • source

      This is a stage 3 proposal for an upcoming JavaScript feature that will provide another way to eagerly load but lazily initialize imported modules. The imported module is returned in an uninitialized state. Support for this syntax may or may not be a part of TypeScript 5.9 (see this issue for details). The syntax looks like this:

      import source foo from "<specifier>";
      const bar = await import.source("<specifier>");

... (truncated)

Changelog

Sourced from esbuild's changelog.

Changelog: 2021

This changelog documents all esbuild versions published in the year 2021 (versions 0.8.29 through 0.14.10).

0.14.10

  • Enable tree shaking of classes with lowered static fields (#175)

    If the configured target environment doesn't support static class fields, they are converted into a call to esbuild's __publicField function instead. However, esbuild's tree-shaking pass treated this call as a side effect, which meant that all classes with static fields were ineligible for tree shaking. This release fixes the problem by explicitly ignoring calls to the __publicField function during tree shaking side-effect determination. Tree shaking is now enabled for these classes:

    // Original code
    class Foo { static foo = 'foo' }
    class Bar { static bar = 'bar' }
    new Bar()
    // Old output (with --tree-shaking=true --target=es6)
    class Foo {
    }
    __publicField(Foo, "foo", "foo");
    class Bar {
    }
    __publicField(Bar, "bar", "bar");
    new Bar();
    // New output (with --tree-shaking=true --target=es6)
    class Bar {
    }
    __publicField(Bar, "bar", "bar");
    new Bar();

  • Treat --define:foo=undefined as an undefined literal instead of an identifier (#1407)

    References to the global variable undefined are automatically replaced with the literal value for undefined, which appears as void 0 when printed. This allows for additional optimizations such as collapsing undefined ?? bar into just bar. However, this substitution was not done for values specified via --define:. As a result, esbuild could potentially miss out on certain optimizations in these cases. With this release, it's now possible to use --define: to substitute something with an undefined literal:

    // Original code
    let win = typeof window !== 'undefined' ? window : {}
    // Old output (with --define:window=undefined --minify)
    let win=typeof undefined!="undefined"?undefined:{};
    // New output (with --define:window=undefined --minify)
    let win={};

  • Add the --drop:debugger flag (#1809)

    Passing this flag causes all debugger; statements to be removed from the output. This is similar to the drop_debugger: true flag available in the popular UglifyJS and Terser JavaScript minifiers.

... (truncated)

Commits
  • 8c71947 publish 0.25.8 to npm
  • 0508f24 some parsing fixes for source phase imports
  • 6e4be2f js parser: recover from bad #private identifiers
  • c9c6357 fix #4248: #private ids in arrow fn body in ?:
  • 9b42f68 publish 0.25.7 to npm
  • 9ba01d1 abs-paths: js api and tests
  • ca196c9 fix for parser backtracking crash
  • 2979b84 fix #4241: ts arrow function type backtrack (hack)
  • 1180410 fix an unused variable warning
  • fc3da57 fix #4238: add defer and source import phases
  • Additional commits viewable in compare view

Updates tsup from 4.14.0 to 8.5.0

Release notes

Sourced from tsup's releases.

v8.5.0

   🚀 Features

   🐞 Bug Fixes

    View changes on GitHub

v8.4.0

   🚀 Features

   🐞 Bug Fixes

    View changes on GitHub

v8.3.6

   🐞 Bug Fixes

    View changes on GitHub

v8.3.5

   🐞 Bug Fixes

    View changes on GitHub

v8.3.4

No significant changes

    View changes on GitHub

v8.3.3

No significant changes

    View changes on GitHub

v8.3.1

   🚀 Features

... (truncated)

Commits

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Bumps [esbuild](https://github.com/evanw/esbuild) to 0.25.8 and updates ancestor dependency [tsup](https://github.com/egoist/tsup). These dependencies need to be updated together.


Updates `esbuild` from 0.12.29 to 0.25.8
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG-2021.md)
- [Commits](evanw/esbuild@v0.12.29...v0.25.8)

Updates `tsup` from 4.14.0 to 8.5.0
- [Release notes](https://github.com/egoist/tsup/releases)
- [Commits](egoist/tsup@v4.14.0...v8.5.0)

---
updated-dependencies:
- dependency-name: esbuild
  dependency-version: 0.25.8
  dependency-type: indirect
- dependency-name: tsup
  dependency-version: 8.5.0
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
@dependabot dependabot bot added dependencies Pull requests that update a dependency file javascript Pull requests that update javascript code labels Aug 10, 2025
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