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wrangler build emits a Build Output API directory

Introduced 2026-06-18 · score 0.90

HOW TO USE IT

When building with `--experimental-new-config`, run `wrangler build --experimental-new-config --experimental-cf-build-output` to emit the self-contained Build Output API directory under `.cloudflare/output/v0/`.

wrangler build --experimental-new-config --experimental-cf-build-output

WHY THIS HELPS

Build a project using the new configuration path and produce a self-contained Build Output API directory.

BEFORE THIS CHANGE

The build delegated to `wrangler deploy --dry-run`.

REQUIREMENTS AND LIMITATIONS

  • Version: 4.102.0
  • Availability: experimental
  • --experimental-new-config (required): Use alongside `--experimental-cf-build-output`.
  • --experimental-cf-build-output (required): Make `wrangler build` emit the Build Output API directory under `.cloudflare/output/v0/`; use alongside `--experimental-new-config`.
  • Use `--experimental-cf-build-output` alongside `--experimental-new-config`.

FIRST-PARTY EVIDENCE

Check the installed version and the source before using it. Entry JSON

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