Emit new Worker config for same-worker Workflows

[Naapperas]

Implements the Miniflare side of cloudflare/workerd#7361, which implements support in workerd for running same-worker Workflows

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s): [Workflows] Document Workflow exports and ctx.exports cloudflare-docs#33655
  • Documentation not necessary because:

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[changeset-bot]

🦋 Changeset detected

Latest commit: 387a25b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 9 packages

Name	Type
miniflare	Minor
@cloudflare/workflows-shared	Minor
@cloudflare/vitest-plugin	Minor
@cloudflare/vite-plugin	Minor
wrangler	Minor
@cloudflare/deploy-helpers	Patch
@cloudflare/pages-shared	Patch
@cloudflare/remote-bindings	Patch
@cloudflare/runtime-types	Patch

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commit: 387a25b

[ask-bonk]

@Naapperas Bonk workflow was cancelled.

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[ask-bonk]

Export-only workflows never enter bindingIdMap.workflows: that map is still populated solely from env workflow proxy bindings. Consequently a Worker that uses only ctx.exports.MyWorkflow has no /api/workflows entry and the Local Explorer cannot inspect or create its instances. The added test masks this by also configuring MY_WORKFLOW. Add explorer bindings and map entries for exports that do not already have an env binding.

		workflowExporters,
		telemetry,
		observabilityEnabled,
		sharedOptions,
	} = options;
	const workflowProxyBindings = proxyBindings.filter((binding) =>
		binding.name?.startsWith(
			`${CoreBindings.DURABLE_OBJECT_NAMESPACE_PROXY}:workflows:`
		)
	);

	for (const [workflowName, exporter] of workflowExporters) {
		if (bindingIdMap.workflows[workflowName] !== undefined) {
			continue;
		}

		const binding = `${CoreBindings.DURABLE_OBJECT_NAMESPACE_PROXY}:workflows:exports:${workflowName}`;
		bindingIdMap.workflows[workflowName] = {
			name: workflowName,
			className: exporter.className,
			scriptName: exporter.workerName,
			binding,
			engineBinding: `EXPLORER_WORKFLOW_ENGINE_${workflowName}`,
		};
		workflowProxyBindings.push({
			name: binding,
			wrapped: {
				moduleName: "workflows:local-wrapped-binding",
				innerBindings: [
					{
						name: "binding",
						service: {
							name: `workflows:${workflowName}`,
							entrypoint: "WorkflowBinding",
						},
					},
				],
			},
		});
	}

[ask-bonk]

I'm Bonk, and I've done a quick review of your PR.

Adds local ctx.exports Workflow support across Miniflare integrations.

1. P2: Local Explorer omits workflows declared only in exports; suggestion posted in the PR comment.

github run

[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/workflows
• ✅ @cloudflare/wrangler

Show detailed file reviewers

[devin-ai-integration]

Note

Newer findings are available below. Devin Review posted a newer report on this PR, in addition to the findings presented here.

Devin Review found 1 potential issue.

[devin-ai-integration]

Note

Newer findings are available below. Devin Review posted a newer report on this PR, in addition to the findings presented here.

Devin Review found 0 new potential issues.

[jamesopstad]

Looks great! workerd has been bumped to the latest version on main so you should be able to rebase and then merge.

[workers-devprod]

Codeowners reviews satisfied

[devin-ai-integration]

Devin Review found 1 new potential issue.