Micro JS project starter, kinda like part of my dotfiles...start writing JS with unit tests, linting, and ES6 in like 20 seconds. A more persistent scratchpad than a REPL.
git clone https://github.com/stuartsan/js-starter $WHATEVER
cd $WHATEVER
Optionally wipe out this starter project's history and initialize a new repo:
rm -rf .git/ && git init
Then grab stuff:
npm install
And do stuff:
npm test
OR
npm run test:watch
OR
npm run lint