1. clone repository
2. run npm i
3. run node src/app1-es5/index.js to run simple example of usage with ES5.
4. run node src/app2-es5-json-schemas/index.js to run example of usage with ES5 + schemas defined in a JSON.
5. run node src/app3-es6/index.js to run simple example of usage with ES6.

If you are looking for more advanced JavaScript example with latest ES features and Babel used see here.