Add newline to prepended name and compatibility_date in wrangler.toml

[nielsreijers]

This was causing create-cloudflare to generate an incorrect wrangler.toml for templates that didn't include these attributes.

What this PR solves / how to test

When npm create cloudflare creates a project, it either updates name and compatibility_date properties in wrangler.toml, or adds them if they don't exist yet.
In that case they are added by prepending to the toml file, but this is done without a new line, which results in a broken toml file.

For example this:
npm create cloudflare@latest my-app -- --template xtuc/img-color-worker

Results in this wrangler.toml:

compatibility_date = "2024-05-12"name = "my-app"
type = "webpack"

account_id = ""
workers_dev = true
route = ""
zone_id = ""

Apparently in this case the template did have a name = , which was updated, but no compatibility_date = , so it was prepended to the file but without a new line.

The fix is pretty simple, and I've added a line to the corresponding unit test to parse the resulting toml to make sure it's valid.

Your CONTRIBUTING.md says it's ok to open a PR directly for trivial changes. I think this could be considered trivial, but course that depends on your definition. :-)
So if you'd like me to open an issue for this, then please let me know.

Author has addressed the following

• Tests
  • TODO (before merge)
  • [X ] Included
  • Not necessary because:
• E2E Tests CI Job required? (Use "e2e" label or ask maintainer to run separately)
  • I don't know
  • Required / Maybe required
  • [ X] Not required because: Very small local bugfix, covered by extending an existing unit test
• Changeset (Changeset guidelines)
  • TODO (before merge)
  • Included
  • [ X] Not necessary because: Trivial change
• Public documentation
  • TODO (before merge)
  • Cloudflare docs PR(s): https://github.com/cloudflare/cloudflare-docs/pull/...
  • [ X] Not necessary because: Not a public facing change

[changeset-bot]

⚠️ No Changeset found

Latest commit: 676b2e6

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[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/10822770220/npm-package-wrangler-5816

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/5816/npm-package-wrangler-5816

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-wrangler-5816 dev path/to/script.js

Additional artifacts:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-create-cloudflare-5816 --no-auto-update

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-cloudflare-kv-asset-handler-5816

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-miniflare-5816

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-cloudflare-pages-shared-5816

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-cloudflare-vitest-pool-workers-5816

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-cloudflare-workers-editor-shared-5816

npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/10822770220/npm-package-cloudflare-workers-shared-5816

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

---

[email protected] includes the following runtime dependencies:

Package	Constraint	Resolved
miniflare	workspace:*	3.20240821.2
workerd	1.20240909.0	1.20240909.0
workerd --version	1.20240909.0	2024-09-09

Please ensure constraints are pinned, and miniflare/workerd minor versions match.