Lesson: Modularization with RollupJs

Try it out

http://rollupjs.org

Todo

Install rollup as dev dependency
Restructure app into modules (see below)
Generate bundle.js with rollup
Replace app.js with bundle.js in index.html
Add script to package.json

Recommended folder structure

- src
    - app.js
    - todo-element.js
    - todo-store.js
- bundle.js // generated by rollup
- index.html
- styles.css