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@dependabot dependabot bot commented on behalf of github Oct 1, 2025

Bumps esbuild from 0.19.5 to 0.25.10.

Release notes

Sourced from esbuild's releases.

v0.25.10

  • Fix a panic in a minification edge case (#4287)

    This release fixes a panic due to a null pointer that could happen when esbuild inlines a doubly-nested identity function and the final result is empty. It was fixed by emitting the value undefined in this case, which avoids the panic. This case must be rare since it hasn't come up until now. Here is an example of code that previously triggered the panic (which only happened when minifying):

    function identity(x) { return x }
    identity({ y: identity(123) })
  • Fix @supports nested inside pseudo-element (#4265)

    When transforming nested CSS to non-nested CSS, esbuild is supposed to filter out pseudo-elements such as ::placeholder for correctness. The CSS nesting specification says the following:

    The nesting selector cannot represent pseudo-elements (identical to the behavior of the ':is()' pseudo-class). We’d like to relax this restriction, but need to do so simultaneously for both ':is()' and '&', since they’re intentionally built on the same underlying mechanisms.

    However, it seems like this behavior is different for nested at-rules such as @supports, which do work with pseudo-elements. So this release modifies esbuild's behavior to now take that into account:

    /* Original code */
    ::placeholder {
      color: red;
      body & { color: green }
      @supports (color: blue) { color: blue }
    }
    /* Old output (with --supported:nesting=false) */
    ::placeholder {
    color: red;
    }
    body :is() {
    color: green;
    }
    @​supports (color: blue) {
    {
    color: blue;
    }
    }
    /* New output (with --supported:nesting=false) */
    ::placeholder {
    color: red;
    }
    body :is() {
    color: green;
    }
    @​supports (color: blue) {
    ::placeholder {
    color: blue;
    }

... (truncated)

Changelog

Sourced from esbuild's changelog.

Changelog: 2023

This changelog documents all esbuild versions published in the year 2023 (versions 0.16.13 through 0.19.11).

0.19.11

  • Fix TypeScript-specific class transform edge case (#3559)

    The previous release introduced an optimization that avoided transforming super() in the class constructor for TypeScript code compiled with useDefineForClassFields set to false if all class instance fields have no initializers. The rationale was that in this case, all class instance fields are omitted in the output so no changes to the constructor are needed. However, if all of this is the case and there are #private instance fields with initializers, those private instance field initializers were still being moved into the constructor. This was problematic because they were being inserted before the call to super() (since super() is now no longer transformed in that case). This release introduces an additional optimization that avoids moving the private instance field initializers into the constructor in this edge case, which generates smaller code, matches the TypeScript compiler's output more closely, and avoids this bug:

    // Original code
    class Foo extends Bar {
      #private = 1;
      public: any;
      constructor() {
        super();
      }
    }
    // Old output (with esbuild v0.19.9)
    class Foo extends Bar {
    constructor() {
    super();
    this.#private = 1;
    }
    #private;
    }
    // Old output (with esbuild v0.19.10)
    class Foo extends Bar {
    constructor() {
    this.#private = 1;
    super();
    }
    #private;
    }
    // New output
    class Foo extends Bar {
    #private = 1;
    constructor() {
    super();
    }
    }

  • Minifier: allow reording a primitive past a side-effect (#3568)

    The minifier previously allowed reordering a side-effect past a primitive, but didn't handle the case of reordering a primitive past a side-effect. This additional case is now handled:

... (truncated)

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Bumps [esbuild](https://github.com/evanw/esbuild) from 0.19.5 to 0.25.10.
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG-2023.md)
- [Commits](evanw/esbuild@v0.19.5...v0.25.10)

---
updated-dependencies:
- dependency-name: esbuild
  dependency-version: 0.25.10
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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 Oct 1, 2025
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