Issue: `convex dev` hangs indefinitely on "Preparing Convex functions..." step
Environment:
- Node v22.0.0, bun 1.2.4
- Convex deployment:
dev:fiery-okapi-709
- macOS (Darwin 24.5.0)
Details:
- Happens with both bunx convex dev and npm exec convex dev
- Verbose output shows it reaches "Bundling modules for Convex's runtime..." then hangs
- Even occurs with minimal function (simple hello world query)
- TypeScript compilation passes without errors
- Tried killing existing processes, no effect
Workaround attempts:
- Used --once flag - still hangs
- Tried CONVEX_DEBUG=1 - no additional info
- Simplified functions to basic hello world - still hangs
Anyone seen this before or have suggestions? 🤔5 Replies
Thanks for posting in <#1088161997662724167>.
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Thank you!
could be some bad tsconfig setting for convex possibly.
I’m also experiencing this problem. it’s persisted through reinstalls on WSL2 and node 24
As additional context:
npx convex dev worked fine momentarily when I had the CLI create a new project, but after a few minutes it went back to hanging. Designating existing projects always leads to hangs.
Rolling back to convex-js 1.25.0 resolves the issue.Still seeing problems with latest convex-js?
It's happening to me, suddenly it stopped working, is stuck in
Bundling modules for Convex's runtime... when running with --verbose.