Most JS frameworks have such a piece of code at the beginning, please explain what happens on each line?

Question

JavaScript

What is inside, in principle, is clear, this is functionality, but at the beginning it is not clear to me why this check is needed at the beginning? It's in Vue, ReactJS etc.;

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global.React = factory());
}(this, (function () { 'use strict';

Answer 1

Universal Module Definition
About modules, formats, loaders and assemblers