const {
    encryptUint8Array,
    decryptUint8Array,
    encodeString, // For convenience, but can be done with native TextEncoder
    decodeString  // For convenience, but can be done with native TextDecoder
} = require('encrypt-uint8array');

(async () => {
    const secret = encodeString('This is the secret');
    const password = encodeString('P4s$w0Rd!');
    const encrypted = await encryptUint8Array(secret, password);
    console.log(encrypted);
    //=> Uint8Array [ 0, 1, 1, 65, /* ... */, 103, 26 ]
    const decrypted = await decryptUint8Array(encrypted, password);
    console.log(decrypted);
    //=> Uint8Array [ 84, 104, 105, 115, /* ... */, 101, 116 ]
    console.log(decodeString(decrypted));
    //=> 'This is the secret'

    await decryptUint8Array(encrypted, encodeString('wrong password'));
    //=> DecryptionError: Unable to decrypt - password is incorrect or data is corrupted.
})();