●Change8

v0.25.4

📦 esbuild
✨ 2 features🐛 2 fixes🔧 5 symbols

Summary

This release introduces CORS support for the development server to enable cross-origin debugging and fixes regressions related to source map URL parsing and '__proto__' exports.

Migration Steps

  1. If you need to access the development server from a different origin (e.g., debugging production with localhost), add the '--cors-origin' flag to your CLI command or the 'cors' property to your 'ctx.serve' configuration.

✨ New Features

  • Added CORS support to the development server for simple requests via the new 'cors' option.
  • The 'cors' option allows setting 'Access-Control-Allow-Origin' based on a matching 'Origin' header or using '*' for all origins.

🐛 Bug Fixes

  • Fixed a regression from 0.25.0 where invalid URLs in source map 'sources' were replaced with empty strings; they are now passed through unmodified.
  • Fixed an issue where ESM exports named '__proto__' incorrectly set the prototype of the export object during ESM-to-CommonJS conversion.

🔧 Affected Symbols

ctx.serveapi.ServeOptionsapi.CORSOptionssources__proto__