easrng/npm2jsr

npm2jsr

This is a JSR registry API compatible server that provides NPM modules transformed to JSR format. There is a hosted instance available at https://npm2jsr.easrng.net. Use at your own risk, it is very likely that I will need to ship changes that could break your lockfiles.

Usage

Transforming NPM package names to npm2jsr package names

npm2jsr puts all the packages it generates under the jsr:@npm scope. To convert an npm package name to the equivalent jsr:@npm/-namespaced package name, follow these steps:

• Let package_name be the NPM package name to convert
• If package_name starts with @
  • Remove the initial @ character from package_name
  • Assert that package_name contains exactly one / character
  • Split package_name on / into scope and name
  • Assert that scope does not contain __
  • Return "@npm/scope__name"
• Otherwise
  • Assert that package_name does not contain / or __
  • Return "@npm/package_name"

HTTP Endpoints

• /@npm/<encoded-package-name>/meta.json
  Version information in JSR format
• /@npm/<encoded-package-name>/<version>_meta.json
  Export map and manifest for a specific version of a package in JSR format. Note that no moduleGraph is provided.
• /@npm/<encoded-package-name>/<version>/<path>
  Serves files from the transformed package.