It sounds like you've encountered some challenges while transitioning your application from a traditional Node.js environment to Cloudflare Workers. Let's break down the issues and solutions you mentioned:
Phase 2a: Initial Setup
-
Adding
@types/node:- You correctly identified that adding
@types/nodewas necessary because React Router uses some Node.js-specific types, such asfs, which are not available in Workers.
- You correctly identified that adding
-
Adjusting the SSR Entry Point:
- Since Workers use Web Streams instead of Node.js streams, you had to modify your SSR entry point (
entry.server.tsx) to userenderToReadableStreaminstead ofrenderToPipeableStream.
- Since Workers use Web Streams instead of Node.js streams, you had to modify your SSR entry point (
Phase 2b: Bugs Specific to Cloudflare Workers
-
setTimeoutin Global Scope:- In Workers, certain operations like setting timers (e.g.,
setTimeout,setInterval) are not allowed during module initialization (global scope). This is because the runtime enforces a strict startup discipline to ensure deterministic behavior.
To fix this issue, you need to move any asynchronous or side-effect code inside request handlers. For example:
typescript1// fonts.ts — runs - In Workers, certain operations like setting timers (e.g.,
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