Feature request: Add library-mode bundler to Parcel

Feature request: Add library-mode bundler to Parcel: a task in LegoFlow-SWE (Harbor dataset). I’m a library author who uses Parcel to build packages. Currently Parcel merges all source files into a single output file (or a few split by async boundaries). This makes it hard to publish libraries…

The task

I’m a library author who uses Parcel to build packages. Currently Parcel merges all source files into a single output file (or a few split by async boundaries). This makes it hard to publish libraries that can be efficiently tree-shaken and chunk-split by downstream consumers.

Part of Lego-X/LegoFlow-SWE.