[lastmjs]

I think it's simpler. No bundling. You don't have to include a bundle file, you just include files directly as you would have without a bundler. That may seem like a trivial difference, and it could be, but it leads to simpler code and less of a delta between what you think is happening with your modules and what actually happens at runtime.

[Tajnymag]

But Parcel does exactly that. You point parcel at your index.html and it transpiles everything to a dist/ directory including rewritten index.html with imports pointing towards the transpiled files.