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

Bumps esbuild from 0.25.0 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.

0.25.10

  • 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)

Commits

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Bumps [esbuild](https://github.com/evanw/esbuild) from 0.25.0 to 0.25.10.
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG.md)
- [Commits](evanw/esbuild@v0.25.0...v0.25.10)

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

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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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (81f4d59) to head (2f0f625).
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@@            Coverage Diff            @@
##            master     #1169   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           35        35           
  Lines         1450      1450           
  Branches       345       345           
=========================================
  Hits          1450      1450           

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