where is create-react-app webpack config and files?

If you want to find webpack files and configurations go to your package.json file and look for scripts You will find that scripts object is using a library react-scripts Now go to node_modules and look for react-scripts folder react-script-in-node-modules This react-scripts/scripts and react-scripts/config folder contains all the webpack configurations.

Map vs Object in JavaScript

According to MDN: A Map object can iterate its elements in insertion order – a for..of loop will return an array of [key, value] for each iteration. and Objects are similar to Maps in that both let you set keys to values, retrieve those values, delete keys, and detect whether something is stored at a key. Because … Read more

React statics with ES6 classes

statics only works with React.createClass. Simply declare the method as a static class method: Regarding You are literally creating a statics property on the React object. That property does not magically extend your component.