🐛 BUG: Error loop/hang with passThroughOnException and no host

[GregBrimble]

Which Cloudflare product(s) does this pertain to?

Wrangler

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

3.91.0

What version of Node are you using?

No response

What operating system and version are you using?

macOS

Describe the Bug

Setup

wrangler.toml
src/
  index.js

# ./wrangler.toml
name = "my-app"
main = "./src/index.js"
compatibility_date = "2024-11-26"

// ./src/index.js

export default {
  fetch(request, env, ctx) {
    ctx.passThroughOnException();
    throw new Error("bang");
  }
}

Observed behavior

1. npx wrangler dev --no-bundle --host example.com

2. curl http://localhost:8787/

3. Error twice(?) in Wrangler and return example.com response to cURL

4. npx wrangler dev --no-bundle

5. curl http://localhost:8787/

6. Error loop in Wrangler and hang waiting for a response in cURL

Expected behavior

• With a --host, error just once(?)
• Without a --host, I have no idea...? Error once in Wrangler and return a null-body 500-status response for cURL?

Please provide a link to a minimal reproduction

No response

Please provide any relevant error logs

Some behind-the-scenes chat about this: https://cflare.co/passthru