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@renovate renovate bot commented May 7, 2025

This PR contains the following updates:

Package Change Age Adoption Passing Confidence
esbuild 0.25.3 -> 0.25.4 age adoption passing confidence

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Release Notes

evanw/esbuild (esbuild)

v0.25.4

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  • Add simple support for CORS to esbuild's development server (#​4125)

    Starting with version 0.25.0, esbuild's development server is no longer configured to serve cross-origin requests. This was a deliberate change to prevent any website you visit from accessing your running esbuild development server. However, this change prevented (by design) certain use cases such as "debugging in production" by having your production website load code from localhost where the esbuild development server is running.

    To enable this use case, esbuild is adding a feature to allow Cross-Origin Resource Sharing (a.k.a. CORS) for simple requests. Specifically, passing your origin to the new cors option will now set the Access-Control-Allow-Origin response header when the request has a matching Origin header. Note that this currently only works for requests that don't send a preflight OPTIONS request, as esbuild's development server doesn't currently support OPTIONS requests.

    Some examples:

    • CLI:

      esbuild --servedir=. --cors-origin=https://example.com
      
    • JS:

      const ctx = await esbuild.context({})
      await ctx.serve({
        servedir: '.',
        cors: {
          origin: 'https://example.com',
        },
      })
    • Go:

      ctx, _ := api.Context(api.BuildOptions{})
      ctx.Serve(api.ServeOptions{
        Servedir: ".",
        CORS: api.CORSOptions{
          Origin: []string{"https://example.com"},
        },
      })

    The special origin * can be used to allow any origin to access esbuild's development server. Note that this means any website you visit will be able to read everything served by esbuild.

  • Pass through invalid URLs in source maps unmodified (#​4169)

    This fixes a regression in version 0.25.0 where sources in source maps that form invalid URLs were not being passed through to the output. Version 0.25.0 changed the interpretation of sources from file paths to URLs, which means that URL parsing can now fail. Previously URLs that couldn't be parsed were replaced with the empty string. With this release, invalid URLs in sources should now be passed through unmodified.

  • Handle exports named __proto__ in ES modules (#​4162, #​4163)

    In JavaScript, the special property name __proto__ sets the prototype when used inside an object literal. Previously esbuild's ESM-to-CommonJS conversion didn't special-case the property name of exports named __proto__ so the exported getter accidentally became the prototype of the object literal. It's unclear what this affects, if anything, but it's better practice to avoid this by using a computed property name in this case.

    This fix was contributed by @​magic-akari.


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This PR was generated by Mend Renovate. View the repository job log.

@renovate renovate bot added the dependencies Pull requests that update a dependency file label May 7, 2025
@renovate renovate bot requested a review from a team as a code owner May 7, 2025 21:50
@renovate renovate bot added javascript dependencies Pull requests that update a dependency file labels May 7, 2025
@renovate renovate bot enabled auto-merge (squash) May 7, 2025 21:50
@renovate renovate bot added the javascript label May 7, 2025
@renovate renovate bot merged commit 6099258 into main May 8, 2025
31 of 32 checks passed
@renovate renovate bot deleted the renovate/esbuild-0.x branch May 8, 2025 01:47
This was referenced Aug 11, 2025
This was referenced Sep 24, 2025
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