cloudflare/workers-sdk miniflare@4.20260317.1

on GitHub

Minor Changes

• #12972 cb71403 Thanks @NuroDev! - Add worker filtering to the local explorer UI

  When multiple workers share a dev registry, all their bindings were previously shown together in a single flat list. The explorer now shows a worker selector dropdown, letting you inspect each worker's bindings independently.

  The selected worker is reflected in the URL as a ?worker= search param, so deep links work correctly. By default the explorer selects the worker that is hosting the dashboard itself.

• #12888 3a1c149 Thanks @emily-shen! - Add R2 support to the local explorer.

  The local explorer now supports the following:

  • Viewing, modifying & deleting objects
  • Uploading files
  • Creating directories / prefixes

  Note: The local explorer is an experimental WIP feature that is now enabled by default. This can still be opt-ed out of by using X_LOCAL_EXPLORER=false to disable it.

• #12848 ce48b77 Thanks @emily-shen! - Enable local explorer by default

  This ungates the local explorer, a UI that lets you inspect the state of D1, DO and KV resources locally by visiting /cdn-cgi/explorer during local development.

  Note: this feature is still experimental, and can be disabled by setting the env var X_LOCAL_EXPLORER=false.

• #12881 8729f3d Thanks @pombosilva! - Workflow instances now support pause, resume, restart, and terminate in local dev.

  const instance = await env.MY_WORKFLOW.create({
    id: "my-instance",
  });
  
  await instance.pause(); // pauses after the current step completes
  await instance.resume(); // resumes from where it left off
  await instance.restart(); // restarts the workflow from the beginning
  await instance.terminate(); // terminates the workflow immediately

Patch Changes

• #12960 3c988e2 Thanks @penalosa! - Exclude metadata.sqlite when listing Durable Object instances

  An upcoming version of workerd stores per-namespace alarm metadata in a metadata.sqlite file alongside per-actor .sqlite files. The local explorer's DO object listing was treating this file as a Durable Object instance, inflating counts and breaking pagination. This file is now filtered out.