Add _headers file to NextJS workers template

[vicb]

Adds the _headers file to the NextJS workers template. This will allow browser caching on static and immutable files that NextJS generates, since Cloudflare Static Assets have the header Cache-Control: public, max-age=0, must-revalidate by default.

A related issue has opened on the OpenNext repository: opennextjs/opennextjs-cloudflare#624 .

Supersedes #9131 + #9264

---

• Tests
  • TODO (before merge)
  • Tests included
  • Tests not necessary because: It's adding a static file
• Wrangler / Vite E2E Tests CI Job required? (Use "e2e" label or ask maintainer to run separately)
  • I don't know
  • Required
  • Not required because: not affected
• Public documentation
  • TODO (before merge)
  • Cloudflare docs PR(s):
  • Documentation not necessary because: Related documentation will be in OpenNext docs, see docs(cloudflare): add static assets caching opennextjs/docs#144
• Wrangler V3 Backport
  • TODO (before merge)
  • Wrangler PR:
  • Not necessary because: not a wrangler change

[changeset-bot]

🦋 Changeset detected

Latest commit: 1e4d64c

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

This PR includes changesets to release 1 package

Name	Type
create-cloudflare	Patch

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[windsurf-bot]

Looks good to me 🤙

[github-actions]

A Wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-wrangler-9442

Prereleases for other packages:

cloudflare-workers-bindings-extension:

wget https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-workers-bindings-extension-9442 -O ./cloudflare-workers-bindings-extension.0.0.0-vf2b3569f9.vsix && code --install-extension ./cloudflare-workers-bindings-extension.0.0.0-vf2b3569f9.vsix

create-cloudflare:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-create-cloudflare-9442 --no-auto-update

@cloudflare/kv-asset-handler:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-kv-asset-handler-9442

miniflare:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-miniflare-9442

@cloudflare/pages-shared:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-pages-shared-9442

@cloudflare/unenv-preset:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-unenv-preset-9442

@cloudflare/vite-plugin:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-vite-plugin-9442

@cloudflare/vitest-pool-workers:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-vitest-pool-workers-9442

@cloudflare/workers-editor-shared:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-workers-editor-shared-9442

@cloudflare/workers-shared:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-workers-shared-9442

@cloudflare/workflows-shared:

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/15417642931/npm-package-cloudflare-workflows-shared-9442

Note that these links will no longer work once the GitHub Actions artifact expires.

[vicb]

Thanks Dario!