how to generate uuid in nodejs code example

Example 1: uuid v4 react

npm install uuid
import { v4 as uuidv4 } from 'uuid';

Example 2: uuid javascript

uuidv4() {
    return 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
      var r = (Math.random() * 16) | 0,
        v = c == 'x' ? r : (r & 0x3) | 0x8;
      return v.toString(16);
    });
  }