I don't think webpack is best considered as a build tool. It's primarily a dependency wrangler - it lets you define entry points, which can declare arbitrary de

I don't think webpack is best considered as a build tool. It's primarily a dependency wrangler - it lets you define entry points, which can declare arbitrary dependencies on assets, which can then declare their own dependencies, forever and ever, and webpack will wrangle all that into a single JS file, a single CSS file, or whatever it is you need. As it happens one can also do build-tool stuff (transpiling, prefixing, etc) on the resulting files, but that's not where the magic is.