jest-bundle-browser-env.js

const JSDOMEnvironment = require('jest-environment-jsdom').default;
const nodeCrypto = require('crypto');

class CustomJSDOMEnvironment extends JSDOMEnvironment {
    /*
    // doesn't work in jest 28
    constructor(config, context) {
        super({
            ...config,
            // @see https://github.com/facebook/jest/issues/12586#issuecomment-1073298261
            globals: {
                ...config.globals,
                Uint32Array,
                Uint8Array,
                ArrayBuffer,
            },
        }, context);
    }
    */

    async setup() {
        await super.setup();

        this.global.Uint8Array = Uint8Array;
        this.global.ArrayBuffer = ArrayBuffer;

        // window.crypto is not defined in jsdom
        this.global.crypto = {
            getRandomValues: function(buffer) {
                return nodeCrypto.randomFillSync(buffer);
            }
        };
    }
}

module.exports = CustomJSDOMEnvironment;