Change8

miniflare@4.20260329.0

📦 cloudflare-workersView on GitHub →
2 features🐛 1 fixes🔧 1 symbols

Summary

This release enhances local development tooling by fully implementing devtools endpoints for browser rendering and adding comprehensive Workflows support to the local explorer UI. It also includes a fix for noisy file handle errors on Windows during Miniflare disposal.

Migration Steps

  1. Internal consumers should now use `CorePaths.EXPLORER` directly instead of the deprecated constants `LOCAL_EXPLORER_BASE_PATH` and `LOCAL_EXPLORER_API_PATH`.

✨ New Features

  • Added missing devtools endpoints to the local browser rendering binding, aligning it with the remote Browser Rendering API.
  • Implemented a full Workflows dashboard in the local explorer UI (/cdn-cgi/explorer/) for local development, including instance listing, filtering, status summaries, and detail views.

🐛 Bug Fixes

  • Fixed noisy EBUSY errors on Windows during Miniflare instance disposal by making temporary directory cleanup best-effort, as the OS will eventually clean up the directory in os.tmpdir().

Affected Symbols