@tpacks/flexigrid/src/test/test-environment.js

A library helps you make a grid with resizable and movable panes on it, just like Kibana dashboard

const Environment = require('jest-environment-jsdom');
const {TextEncoder, TextDecoder} = require('util');
const {randomBytes} = require('crypto');

/**
 * A custom environment to set the TextEncoder that is required by TensorFlow.js.
 */
module.exports = class CustomTestEnvironment extends Environment {
  async setup() {
    await super.setup();
    if (typeof this.global.TextEncoder === 'undefined') {
      this.global.TextEncoder = TextEncoder;
    }
    if (typeof this.global.TextDecoder === 'undefined') {
      this.global.TextDecoder = TextDecoder;
    }
    if (typeof this.global.crypto === 'undefined') {
      this.global.crypto = {
        getRandomValues(arr) {
          return randomBytes(arr.length);
        },
      };
    }
  }
};