cloudflare/workers-sdk wrangler@4.130.0

on GitHub

Minor Changes

• #14372 dbf6aad Thanks @ichernetsky-cf! - Add containers[].observability support to wrangler deploy

  Wrangler now accepts container-specific observability settings via containers[].observability, including application-level targeting fields for Containers. Root observability continues to work as a fallback when a container does not define its own observability settings.

  wrangler deploy now preserves legacy configuration.observability for existing container apps that still use rollout-based observability, while using top-level application observability for new or already-migrated apps.

  Existing application diffs are now normalized even when stored resource limits cannot be mapped to a named instance type. API-only metadata and equivalent managed-registry image names no longer appear as edits or affect whether deployment changes require a rollout.

• #15004 e20df20 Thanks @MattieTK! - Delegate agent Pages project creation with a production branch to Workers

  When run by an AI agent, wrangler pages project create --production-branch <name> is now eligible for delegation to a Workers static-assets deploy. The production branch names the target that a Workers deploy would publish to, so it does not need to disqualify a brand-new project from delegation.

  wrangler pages deploy --branch <name> remains on Pages because an interactive new-project flow separately prompts for its production branch. The deployment branch may therefore represent a preview and cannot safely be converted into a production Workers deployment.

• #15004 e20df20 Thanks @MattieTK! - Widen agent Pages-to-Workers delegation to new projects on accounts that already use Pages

  When run by an AI agent, wrangler pages deploy and wrangler pages project create now delegate a brand-new static Pages project to a Workers static-assets deploy even when the account already has other Pages projects. The gate is now per-project rather than per-account: a command targeting a project that already exists stays on Pages, but a new project is delegated regardless of the account's other Pages projects.

  A project name restored from the Pages configuration cache is only used when the cache belongs to the currently authenticated account. An account-matching cached name remains on Pages even when the project is missing remotely, preserving the user's recorded Pages intent. After switching accounts, an otherwise unnamed deploy stays on Pages rather than treating a stale cached project name as a new project on the selected account.

Patch Changes

• #15560 edb3631 Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  @cloudflare/workers-types	^5.20260907.1	^5.20260908.1
  workerd	1.20260907.1	1.20260908.1

• #15557 63c7ff1 Thanks @tomekancu! - Fix wrangler d1 execute --local being extremely slow with large SQL files or commands

  The local SQL splitter consumed quoted strings and comments character-by-character, re-checking the full accumulated string each time. This made splitting a large quoted value or comment quadratic, so seed files could take tens of seconds to run. The splitter now only inspects a bounded trailing window on each step, making splitting effectively linear. The remote path is unaffected as it imports the file server-side.

• #15542 a4e41df Thanks @NAVEENKUMARKR777! - Fix wrangler dev running the custom build command twice on startup and on every config change

  Wrangler already runs the custom build.command once before starting wrangler dev, to resolve the Worker's entry point. When dev.watch wasn't explicitly disabled, BundlerController then unconditionally ran the same build command again the moment it started watching for changes, and repeated this on every subsequent config reload too.

  For fast build commands this just meant duplicate log output (e.g. a vite build visibly running twice at startup). For slower or stateful build commands, running two builds concurrently against the same output files could corrupt the result or fail outright (for example, non-deterministic wasm-opt failures have been reported for Rust builds).

  The initial watcher setup now only bundles the output the build command already produced, instead of re-running the command. Real file changes detected by the watcher still re-run the build command as before.

• Updated dependencies [edb3631, bcebf08]:

  • miniflare@5.20260908.0-alpha