Building tree-shakable library with RollupJS

This is an example repository of a JavaScript library for the Building tree-shakable library with RollupJS article on the Redd Developer portal.

Getting started

$ git clone https://github.com/Redd-Developer/rollup-tree-shaking.git
$ cd rollup-tree-shaking
$ yarn install

Verify

One-line verification

Running the command below will build the library and the consumer application, and verify that the latter doesn't contain any unused modules from the library.

$ yarn test

Manual verification

Build the library

$ yarn build

Build the consumer

Our library is tree-shakable if it's consumer's build only contains the library's modules that were used in the consumer application.

$ yarn build:consumer

Note: This is not something you need to have as a part of your library's setup. This is a verification step of this article.

Inspect the consumer/build/index.js to see that the unused modules (b.js, and its funcB) are not present in the consumer's build.