Good ol&#x27; NPM scripts. Grunt&#x2F;Gulp&#x2F;Gradle are completely unnecessary for most cases.<p>As a library author, supporting every &#x27;flavor of the month&#x27; build tool is a waste of time&#x2F;effort that takes away from improving the core.<p>JSPM. Like NPM but for client-side dependencies. It has built-in transpiling, es6-module support, and can build+minify bundles and sfx bundles.