Grunt vs rollup: What are the differences?
Grunt and rollup belong to "JS Build Tools / JS Task Runners" category of the tech stack.
Grunt is an open source tool with 11.9K GitHub stars and 1.55K GitHub forks. Here's a link to Grunt's open source repository on GitHub.
Medium, Twitter, and Udemy are some of the popular companies that use Grunt, whereas rollup is used by Repro, Yummypets, and Elementum. Grunt has a broader approval, being mentioned in 796 company stacks & 430 developers stacks; compared to rollup, which is listed in 12 company stacks and 4 developer stacks.
We mostly use rollup to publish package onto NPM. For most all other use cases, we use the Meteor build tool (probably 99% of the time) for publishing packages. If you're using Node on FHIR you probably won't need to know rollup, unless you are somehow working on helping us publish front end user interface components using FHIR. That being said, we have been migrating away from Atmosphere package manager towards NPM. As we continue to migrate away, we may publish other NPM packages using rollup.