Serious question: why do you care about 400MB vs 50MB of dev dependencies? Is your internet connection slow? Are you running out of hard drive space? There are

Serious question: why do you care about 400MB vs 50MB of dev dependencies? Is your internet connection slow? Are you running out of hard drive space? There are projects like create-react-app and Parcel which offer very reasonable zero-configuration toolchains. If you care a lot about runtime dependency weight, there are lightweight libraries like Preact (3kB).