How to Use window.crypto in Node.js / / No Comments I’ve been writing a bunch of jest tests recently for libraries that use the underlying window.crypto methods like getRandomValues() and window.crypto.subtle key management methods. One problem I run into is that the window.crypto object isn’t available, so I need to shim it. To use the window.crypto methods, you will need Node 15+. You can set the window.crypto by importing the crypto package and setting it on the global: const crypto = require('crypto').webcrypto; // Shims the crypto property onto global global.crypto = crypto; I really loathe creating mock functions for missing libraries in Node because they can lead to faulty positives on tests; I really appreciate webcrypto... more → Posted in: JavaScript Tagged with: Node.js, window.crypto