🐛 BUG: worker stream api returns once instead of sequentially in wrangler dev

[alirv90]

Which Cloudflare product(s) does this pertain to?

Workers Runtime

What version(s) of the tool(s) are you using?

3.92.0 [Wrangler]

What version of Node are you using?

22.11.0

What operating system and version are you using?

Mac Sequoia

Describe the Bug

Observed behavior

only response when the stream is complete

Expected behavior

I want the stream to response sequentially

Steps to reproduce

Please provide the following:

pnpm dev:cloudflare
npx tsx ./src/vanillaStreamClient.ts

It looks like the problem is only in development (wrangler dev), I tried deploying and it worked well

Please provide a link to a minimal reproduction

https://github.com/alirv90/cfplay

Please provide any relevant error logs

No response