cloudflare/workers-sdk miniflare@5.20260923.0-alpha on GitHub

Minor Changes

#15648 52c0e9f Thanks @tpmmorris! - Expose configured Cron Triggers and one-off scheduled dispatch through Local Explorer
Miniflare's V4 Worker options now accept exact Cron Trigger expressions. Local Explorer reports them in Worker metadata and can dispatch a scheduled event to an exact local or peer Worker name with a chosen cron expression and time.
#15652 44f5295 Thanks @tpmmorris! - Package the Cron Triggers interface in Local Explorer
The Local Explorer assets now include an interactive Cron Triggers destination for one-off local scheduled-handler testing.
#15786 bdda4c3 Thanks @ThomasRubini! - Support UDP connect handlers in local development
The experimental connect configuration now accepts protocol: "udp", with optional idle_timeout_ms and max_pending_bytes settings. UDP datagrams are delivered to the Worker's connect() handler using workerd's value-mode socket streams, and can be tested with Miniflare#dispatchConnect({ protocol: "udp" }).
#15779 fc3cbaa Thanks @Naapperas! - Support workflow entries in the exports configuration map
A Worker can now declare the Workflows it defines in exports, keyed by the WorkflowEntrypoint class name:
```
{
  "exports": {
    "MyWorkflow": {
      "type": "workflow",
      "name": "my-workflow",
      "limits": { "steps": 100 },
      "schedules": "0 * * * *"
    }
  }
}
```
A workflow export accepts the same settings as a workflows binding: limits, concurrency, schedules, and default_retention. wrangler deploy and wrangler versions upload send these entries to the upload API by name, and wrangler deploy and wrangler triggers deploy provision the Workflow with its settings, just as they do for workflows bindings owned by the Worker. A Workflow may be declared both as a binding and as an export, as long as both declarations use the same class and do not set the same setting to different values. A binding to another Worker's Workflow cannot share a name with an export. @cloudflare/config adds the matching exports.workflow() helper. Local development does not yet act on these entries.

Patch Changes

#15796 be72815 Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"
The following dependency versions have been updated:

Dependency From To

@cloudflare/workers-types ^5.20260921.1 ^5.20260923.1
workerd 1.20260921.1 1.20260923.1
#14847 940c692 Thanks @TheSaiEaranti! - Emulate the deterministic-ID uniqueness contract in the local Workflows binding
The local Workflows binding now matches the documented production behavior for deterministic instance IDs: create({ id }) with an ID that already exists throws (instance.already_exists) and retains the existing instance, and createBatch() skips IDs that already exist or repeat within the batch, excluding them from the result instead of creating duplicate executions. Previously both paths silently created duplicates, so code relying on deterministic IDs for idempotency (for example a Queue consumer creating one workflow per message) appeared to work locally while double-executing workflow bodies.

Dependency	From	To
@cloudflare/workers-types	^5.20260921.1	^5.20260923.1
workerd	1.20260921.1	1.20260923.1