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Port Scala Backend to TypeScript

Florian Bauckholt requested to merge backend-rewrite-nodejs into master

This replaces the Scala/gRPC backend with a Deno-based WebSocket API.

Obviously still needs a bunch of testing before it's good to go, but a TypeScript backend might be easier to maintain in the future.

I've set up an example deployment at


  • fix reconnect issues
  • update CI
  • update REAMDE and deployment instructions
  • make sure invalid requests don't crash the server (there's a big try-catch in the message handler, but sneaky type mismatches can probably produce broken transactions.)
  • realistic beta testing
  • update deployment step in CI
Edited by Florian Bauckholt

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