Scala.js in production

on YouTube ↗40m

" summary

Learn Raga launches last week: a full frontend+backend music app with ~3,000 commits, ~90% Scala, and a 780 KB JS bundle. Uses Scala.js isomorphism to share models and iterate fast on the JVM, React via slinky bindings, Webpack, and GraphQL/Apollo facades. Real-time pitch detection must run at 60 FPS, so heavy DSP moves to ASM.js FFT (considering WebAssembly) and tight local mutability to avoid GC pauses; code-splitting is still missing.

AI-written summary · about

" chapters (8)

1. 0:00Introduction to Learn Raga
2. 2:29Demo of the platform
3. 6:18Scala.js and React architecture
4. 11:07Developer tooling and integration
5. 19:26Performance optimization
6. 29:02Isomorphism and development speed
7. 32:55Bundle size and production tips
8. 38:18Q&A and conclusion

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