Brunch vs rollup

According to speed benchmarks, Brunch is one of the fastest tools around for compiling files. According to the authors of Brunch the reason behind this speed is that it recompiles only the changes that were made to an app and performs extensive caching of the app's code.

After installing Brunch the next step is to load a skeleton from git.io/skeletons. This step is as easy as installing another plugin from the npm registry, just point Brunch to the path of the required skeleton/generator then wait for it to work out its magic. Next, run brunch build then wait for a second or two and voila! the project is ready.

Brunch's config files can be extremely small compared to other alternatives. The fact that brunch also allows you to chose from a number of generators also lowers the configuration time considerably.

Brunch automatically produces a source map for all javascript files and CSS stylesheets whenever it minifies an app's resources. This little feature is extremely helpful when debugging is required at the client end.

Can reduce resulting bundle size by performing "tree-shaking" (removing unused parts of code).

Simple config files

It's only one file.