You need to download node first!
node init
npm install --save-dev mocha chai babel-register babel-preset-es201
Open up package.json and set your test script to the following: "scripts": { "test": "mocha --watch --recursive --require babel-core/register" }, Create a .babelrc file in the project directory:
{
"presets": ["es2015"]
}
Project consist of lost of module so dont try to run "npm run test" in root directory in project instead of this Try with js file name. Example
npm run test .\test\chapter06\content01\printOwingV04Final.test.js