Uploaded March 2024 | Updated September 2026, 3 weeks ago

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Join Kevin from the Deno team as he creates a cross-runtime ES module, publishes it to JSR, and uses it in Deno, Node, Cloudflare Workers, and browsers via esbuild.

0:00 Intro to stream
2:27 What is JSR and why?
3:03 How does JSR fit with npm?
4:04 JSR is TypeScript first
5:59 Creating a new module to publish to JSR
9:51 Adding JSDoc comments
12:00 Publishing a module to JSR
13:51 Adding a test
19:08 JSR package score: what is it, how to improve it
22:10 Publishing to JSR from CI / GitHub Actions
29:20 Installing JSR modules in deno
39:00 Installing JSR modules in node/npm
48:15 How does dnt fit into JSR?
51:30 Is there a way to test a JSR module locally?
53:06 Compatibility claims with CI
55:01 When to expect JSR to be generally available?