cloudflare/workers-sdk miniflare@4.20260616.0

on GitHub

Minor Changes

• #14221 0e055d3 Thanks @mglewis! - Support cf.image (transform via Workers) image transformations in local dev

  fetch(url, { cf: { image: { ... } } }) now transforms images locally via Sharp, instead of returning the original bytes unchanged. This mirrors the production "transform via Workers" feature, so Workers already using cf.image behave much more closely to production in wrangler dev.

  As with the Images binding, cf.image transforms require Sharp to be installed — transforms are silently skipped if Sharp is unavailable.

Patch Changes

• #14271 27db82c Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  workerd	1.20260611.1	1.20260612.1

• #14298 2a6a26b Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  workerd	1.20260612.1	1.20260615.1

• #14317 9a424ed Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  workerd	1.20260615.1	1.20260616.1

• #14287 41f391f Thanks @edmundhung! - Improve errors for missing resource bindings

  When methods like getKVNamespace() or getR2Bucket() are called with a binding name that is not configured for that resource type, Miniflare now reports the expected binding type in the error message.