Error: Cannot reach Remix dev server at localhost:3001/ping about remix HOT 5 CLOSED

Can you provide a reproduction or a git repo? I just created a new app via create-remix and it runs OK for me locally on node 20 and bun 1.0.33.

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I don't have node on my machine

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Can you provide a reproduction or dig further into where the error is coming from? It is coming from bun? Or a nested dependency? Remix never calls a .toJSON method as far as I can tell in the codebase.

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I am also getting this:

  at object.<anonymous> (./node_modules/@remix-run/web-fetch/src/fetch.js:116:3)
  at _final (native:1:1)
  at callFinal (native:1:1)
  at prefinish (native:1:1)
  at finishMaybe (native:1:1)
  at native:1:1
  at onend (native:1:1)
  at endReadableNT (native:1:1)
  at processTicksAndRejections (native:1:1)

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Those Remix web-fetch polyfills are only intended for node usage - bun should have built in fetch APIs so you shouldn't need to install the polyfills which remix-serve does by default. I would use a custom express (or other) server and avoid calling installGlobals so you use bun's built in fetch APIs instead of the Remix polyfills.

Something like this is probably closest to what you want if you want to use Bun's raw HTTP server: https://github.com/mcansh/remix-node-http-server

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