Webpack

Overview

Webpack bundles JavaScript. It can also bundle other assets such as css, and images. I can compile SASS.

It can serve as an alternative to Gulp.

Pros

You put includes into the source and set an entry point for Webpack. This avoids having to update any Webpack configuration to accommodate changes in the source code. Easier to maintain.

Cons

There are commonly-used loaders to compile SASS, but this isn't really what the tool is designed to do, so you're kind of performing a work-around when using this way.

You have to accept the design implications of bundling with Webpack, which may be overkill and adds to the learning curve.