You need to understand getRandomValues is on window.crypto that means it works on browser. To make it work on Node.js you need to install get-random-values

npm i get-random-values

In your module add this:

const getRandomValues = require('get-random-values'), 
      array = new Uint8Array(10);
getRandomValues(array);
console.log(getRandomValues(array));

I ran into this same error in the command line: Uncaught TypeError: crypto.randomBytes is not a function

This did NOT work for me:

$ node
> require("crypto")
> crypto.randomBytes(32).toString("hex")

Crypto and randomBytes have to be called in the same command:

$ node
> require('crypto').randomBytes(32).toString('hex')

The output is something like this:

'7a3161b8c92dbf26f0717e89edd27bf10094d2f5cc0f4f2d70d08f463f2881db'

After a good bit of searching, I finally found the solution here: https://massimilianomarini.com/2020/04/random-string/

Like @RwwL, the accepted answer did not work for me. I found that the polyfill used in this library did work: commit with polyfill

//setupTests.tsx
const nodeCrypto = require('crypto');
window.crypto = {
  getRandomValues: function (buffer) {
    return nodeCrypto.randomFillSync(buffer);
  }
};

//jest.config.js
module.exports = {
 //...
  setupFilesAfterEnv: ["<rootDir>/src/setupTests.tsx"],
};