Add support for applications that use the entry Worker during development but not at build time

[jamesopstad]

Add support for applications that use the entry Worker during development but not at build time

Some frameworks, such as Astro, use the ssr environment during development but omit it from the build if the app is fully static. In these cases, we now output an assets only version of the user's input Wrangler config to the output config in the client output directory.

---

• 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):
  • Documentation not necessary because: framework specific

A picture of a cute animal (not mandatory, but encouraged)

[changeset-bot]

🦋 Changeset detected

Latest commit: 147d12d

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

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[github-actions]

✅ All changesets look good

Reviewed: .changeset/rare-ducks-occur.md

Criterion	Status
Version Type	✅ Minor is appropriate for new feature/support
Changelog Quality	✅ Clear description with context and use case
Markdown Headers	✅ No h1/h2/h3 headers
Analytics	✅ N/A - no analytics changes
Dependabot	✅ N/A - not a dependency update
Experimental Features	✅ N/A - not an experimental feature

[pkg-pr-new]

create-cloudflare

npm i https://pkg.pr.new/create-cloudflare@12788

@cloudflare/kv-asset-handler

npm i https://pkg.pr.new/@cloudflare/kv-asset-handler@12788

miniflare

npm i https://pkg.pr.new/miniflare@12788

@cloudflare/pages-shared

npm i https://pkg.pr.new/@cloudflare/pages-shared@12788

@cloudflare/unenv-preset

npm i https://pkg.pr.new/@cloudflare/unenv-preset@12788

@cloudflare/vite-plugin

npm i https://pkg.pr.new/@cloudflare/vite-plugin@12788

@cloudflare/vitest-pool-workers

npm i https://pkg.pr.new/@cloudflare/vitest-pool-workers@12788

@cloudflare/workers-editor-shared

npm i https://pkg.pr.new/@cloudflare/workers-editor-shared@12788

@cloudflare/workers-utils

npm i https://pkg.pr.new/@cloudflare/workers-utils@12788

wrangler

npm i https://pkg.pr.new/wrangler@12788

commit: 147d12d

[petebacondarwin]

Hi @jamesopstad — we're doing some cleanup of stale draft PRs.

This PR has been quiet since 2026-04-23. Could you let us know within 14 days whether you're still planning to continue?

• If yes: please leave a comment with a status update or push a rebase, and we'll keep it open.
• If no: no need to reply — we'll close it after 14 days, and you can always reopen later if you pick it back up.

Thanks!

[jamesopstad]

Hi @jamesopstad — we're doing some cleanup of stale draft PRs.

This PR has been quiet since 2026-04-23. Could you let us know within 14 days whether you're still planning to continue?

• If yes: please leave a comment with a status update or push a rebase, and we'll keep it open.
• If no: no need to reply — we'll close it after 14 days, and you can always reopen later if you pick it back up.

Thanks!

This needs to stay open as it's being tested by the Astro team.

[jamesopstad]

This has been tested and given the go ahead by the Astro team now.

[workers-devprod]

Codeowners approval required for this PR:

• @cloudflare/wrangler

Show detailed file reviewers

• packages/vite-plugin-cloudflare/playground/test-utils/index.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/test-utils/vite-version.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/multi-worker/tests/custom-build-app/multi-worker.spec.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/prerendering/tests/base-tests.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/prerendering/tests/no-ssr/prerendering.spec.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/prerendering/tests/prerendering.spec.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/prerendering/index.html: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/prerendering/vite.config.no-ssr.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/playground/prerendering/vite.config.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/src/deploy-config.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/src/plugins/config.ts: [@cloudflare/wrangler]
• packages/vite-plugin-cloudflare/src/plugins/output-config.ts: [@cloudflare/wrangler]

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 5 additional findings.

[ematipico]

Any updates @jamesopstad ?

[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/wrangler

Show detailed file reviewers

[workers-devprod]

Codeowners reviews satisfied