JSR

It is an open-source package registry for JavaScript and TypeScript that handles publishing TypeScript source, generating API documentation and type definitions, transpiling for cross-runtime compatibility, and distributing packages as ECMAScript modules. It serves JavaScript and TypeScript developers and engineering teams building applications and libraries. It is positioned as a superset of the npm registry that works with any JavaScript package manager and any runtime including Node.js, Deno, Bun, and Cloudflare Workers, rather than a replacement.

Key features

• Publish TypeScript source directly
• Generate API docs automatically
• Generate .d.ts files automatically
• Transpile for cross-runtime compatibility
• Distribute as ECMAScript modules
• Compatible with any npm package manager
• Works with Node.js, Deno, Bun, Workers
• Browse and search packages
• Publish packages to registry