Problems with .stream() v3 - workers/polyfills?

General Discussion
1

Hey there,

V3 is a huge update, nice! I’m having problems with the Worker in the v3 version. I can send/receive about 5-10 messages, and then I routinely get errors from the Worker, which I believe is the stream listener.

I had to ask AI to help me setup the polyfills too, it wasn’t as simple as before.

I’m getting errors like:

index.js?v=73adc55f:1 Uncaught Error: expected `,` or `}` at line 1 column 20459
    at Worker.s (index.js?v=73adc55f:1:2076)
s @ index.js?v=73adc55f:1
index.js?v=73adc55f:1 Uncaught Error: expected `,` or `}` at line 1 column 21991
    at Worker.s (index.js?v=73adc55f:1:2076)
s @ index.js?v=73adc55f:1
2index.js?v=73adc55f:1 Uncaught Error: expected `,` or `}` at line 1 column 4093
    at Worker.s (index.js?v=73adc55f:1:2076)
s @ index.js?v=73adc55f:1
index.js?v=73adc55f:1 Uncaught Error: expected `,` or `}` at line 1 column 21991
    at Worker.s (index.js?v=73adc55f:1:2076)
s @ index.js?v=73adc55f:1
index.js?v=73adc55f:1 Uncaught Error: expected `,` or `}` at line 1 column 20459
    at Worker.s (index.js?v=73adc55f:1:2076)

Which I’m not sure how to debug. My code is on Github, but messy and I had AI try to help me debug this problem.

It would be very useful to have a working XMTP demo that uses Vite v6 because it wasn’t easy getting v3 working.

Any help is much appreciated. Thank you.

1 Like
2

To be clear, it works for a 5-10 messages, and then breaks. Not sure why.

3

I’m eagerly awaiting this : https://github.com/xmtp/xmtp-js/blob/main/sdks/browser-sdk/TBD

I’m guessing there’s some polyfills that I’m not really sure how to configure properly

4

I created a skeletal auth + xmtp project, and it’s clear, the SDK’s workers depend on buffer and protobuf, which is not obvious how to use in a browser

Seems like my crazy shims got it to partially work, but in my skeletal example, it’s still an issue

Long story short, if you have a browser boilerplate that addresses this, it would be much appreciated. I’m blocked at this point

5

Hello! thanks for the report. Responded in the github issue: Bug: Polyfill Problems in XMTP v3 · Issue #857 · xmtp/xmtp-js · GitHub