https://github.com/kwhitley/itty-cors

Dead-simple CORS handling for any itty-router API (test with Cloudflare Workers, but works anywhere)!
https://github.com/kwhitley/itty-cors

Last synced: about 2 months ago
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Dead-simple CORS handling for any itty-router API (test with Cloudflare Workers, but works anywhere)!

• Host: GitHub
• URL: https://github.com/kwhitley/itty-cors
• Owner: kwhitley
• License: mit
• Created: 2022-10-02T22:39:32.000Z (over 2 years ago)
• Default Branch: v0.x
• Last Pushed: 2024-04-01T17:43:41.000Z (about 1 year ago)
• Last Synced: 2025-04-27T17:02:01.793Z (about 2 months ago)
• Language: TypeScript
• Size: 78.1 KB
• Stars: 20
• Watchers: 2
• Forks: 4
• Open Issues: 5
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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# Deprecation Notice

### _`itty-cors` has been fully deprecated in favor of [`itty-router/cors`](https://itty.dev/itty-router/cors)._

This complete rewrite brings the following:

1. full support for industry-standard options (matches express.js)

2. far more control of matching/reflecting origins

3. true wildcard support

4. fixes a nasty race condition that could appear under heavy multi-user load

5. 20% smaller (we somehow shed over 100 bytes)

6. 100% test coverage, like anything in itty-router core

### itty-router v5.x CORS Guide

https://itty.dev/itty-router/cors

### v5.x Migration Guide

https://itty.dev/itty-router/migrations/v4-v5