You'll need NPM installed - for all new to Node folks, see http://blog.teamtreehouse.com/install-node-js-npm-mac
The repo has two folders js - jsvsacript (install and run, see below) cs - C# test examples using Moq and Rhino Mocks strict mocks (runnable but no install required / Visual Studio)
cd js
npm install
npm run test
And that's it, so far!
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
Check you have the .babelrc file included (installs the ES2015 plugin)