splitting with multiple entrypoints does not split dependencies into smaller more optimal chunks

[chungwu]

I have multiple entrypoints that import from some set of library modules, and I would like to use splitting to spit out "optimal" chunks such that each entrypoint only ends up importing the subset of library modules it needs.

Here's an example with esbuild, where the result is not optimal; each entrypoint (main*.js) ends up importing all the library module code (Comp1 / Comp2), even though each only needs either Comp1 or Comp2.

Rollup does split this more optimally; here's the rollup output.

Is it possible to achieve a result like rollup's with esbuild?

Thanks!

[chungwu]

This makes the biggest difference for packages like antd or react-aria, which has a "mono package" that imports and re-exports from many sub-packages (like the comps.js module in the example). It looks like it is important to avoid using mono-packages like this for now and to import directly from the sub-packages instead.