Here's one datapoint, from building the single JS entrypoint for this simple demo site: https://exogen.github.io/layup/ https://exogen.github.io/layup/ First b

Here's one datapoint, from building the single JS entrypoint for this simple demo site: https://exogen.github.io/layup/ https://exogen.github.io/layup/ First build: Parcel: 23.9s, 422K output size webpack 4: 9.6s, 399K output size Rebuild (cached, no changes): Parcel: 900ms webpack 4: 1400ms