Source map noise in esbuild plugin

[intrnl]

The esbuild plugin does a peculiar thing of appending the entire base64 source for the virtual CSS imports. The problem is that this causes a ton of noise, both in the sourcemap, and when esbuild throws an error.

Is there any way we can get around this? I think we can just have a map object that stores filename -> CSS source, and then rewrite the imports to those filename instead.

[intrnl]

Currently I have a fork of the plugin that does this, let me know if you want the change upstreamed 😄
I just have to untangle it from the workarounds I did to make it work with the filesystem cache.
https://github.com/intrnl/esbuild-plugin-vanilla-extract