[jannes]

Parcel has 57 dependencies... (not even counting transient dependencies)

That sort of defeats the purpose of switching from webpack.

And for libraries: Why do you even need a bundler? Can you not distribute the library as multiple files?

[rmilejczz]

Yeah I made some incorrect assumptions about the nature of parcel, foolish mistake on my part.

For your other question it depends on your library. If you’re only targeting ESM or CJS sure, if you need a UMD or want separate outputs for separate targets a bundler like rollup can help prevent a lot of pointless boilerplate.