Explosive bundle size foot gun, leading to 413 Payload Too Large

[sean256]

When publishing a TS build to a local docker instance I got this error:

Pre-publish check failed with status 413 Payload Too Large:

After some digging I found the root cause. I accidentally imported SenderError from spacetimedb instead of spacetimedb/server.

This caused bundle.js to go from 812KB to 1.6MB

This is a very easy error to make, especially when the IDE or AI agent just does it for you, and there is no indication it's gonna cause a problem.

[sean256]

I ran into the 413 again as I needed to use Timestamp, and the only import available is via spacetimedb, and that causes the build to blow up again.

[bfops]

Oof, sorry that you ran into this! That is a bit of a footgun. We'll look into making this less painful.

[jsdt]

Do you have something in front of your local docker instance that is adding a payload size limit? The spacetimedb server should not reject modules that small (I don't think it has a limit locally).