cloudflare/workers-sdk @cloudflare/workers-utils@0.39.0 on GitHub

Minor Changes

#15597 a83d7ac Thanks @skepticfx! - Configure application-wide logs for experimental Durable Object-managed Containers
Set containers[].observability.enabled or containers[].observability.logs.enabled when using scheduling_policy: "durable_object". Normal deployments create missing applications and update explicitly configured log settings without a Container rollout. Omitted settings preserve the application configuration; root Worker observability is not inherited for this policy.
Version uploads may initialize missing applications but preserve existing settings. Deploying or rolling back Worker versions also preserves existing application settings, and --containers-rollout=none skips their updates.
#15597 a83d7ac Thanks @skepticfx! - Support per-image build options for experimental Durable Object-managed Containers
Set build_context and build_vars alongside dockerfile in a Container's named images entries. Context paths resolve relative to the Wrangler configuration file and default to the Dockerfile's directory. Build variables are passed as Docker build arguments. Entries using the same Dockerfile with different contexts or variables are built separately.
```
{
  "containers": [
    {
      "class_name": "Sandbox",
      "scheduling_policy": "durable_object",
      "images": {
        "app": {
          "dockerfile": "./docker/Dockerfile",
          "build_context": ".",
          "build_vars": { "APP_ENV": "production" }
        }
      }
    }
  ]
}
```
#15638 fa79b26 Thanks @G4brym! - Support AI Search bindings in Worker Previews
wrangler preview now accepts ai_search and ai_search_namespaces entries in the previews block and includes them in Preview deployment bindings. This lets Workers that use AI Search instance or namespace bindings attach existing resources to Preview deployments, including preview-specific instance or namespace names.
These bindings are non-inheritable: declare them explicitly under previews. They attach to existing AI Search resources; preview does not provision new isolated instances or namespaces.
#15453 ca71205 Thanks @G4brym! - Remove the gated Web Search binding and Wrangler command
The unreleased search binding and its experimental command have been removed from Wrangler, Miniflare, and configuration APIs.
#15597 a83d7ac Thanks @skepticfx! - Allow experimental Durable Object-managed Containers to link by name through exports
Containers using scheduling_policy: "durable_object" can now specify name and link from exports.<Class>.container without repeating class_name. Deploy and version upload resolve that link for image preparation, Worker metadata, and Container application creation.

Patch Changes

#15179 cb0955f Thanks @rioaguspermana! - Treat 502, 503, and 504 as gateway errors during asset upload retries
Pages and Workers asset uploads now retry more patiently when the Cloudflare API responds with a 502, 503 or 504 gateway error, reducing concurrency and waiting longer between attempts instead of failing the deploy quickly.