oven-sh/bun

Bun can't bundle `isomorphic-ws`

Opened this issue · 2 comments

grampelberg commented

What version of Bun is running?

1.2.22+6bafe2602

What platform is your computer?

Darwin 25.0.0 arm64 arm

What steps can reproduce the bug?

I've got a repro setup. You can run it with:

bun run serve.ts

Then, open your browser and you'll see the error in your console.

What is the expected behavior?

I can use websockets still.

What do you see instead?

browser.js:4 Uncaught Error: ws does not work in the browser. Browser clients must use the native WebSocket object

Additional information

It looks like isomorphic-ws has entry points for node.js and browser.js. When you add an import to isomorphic-ws in the server, it appears that the bundle to also resolve node.js.

RiskyMH commented

It must be doing some degree of caching and as a result using the node one on browser