Make use of the digest() :
var crypto = require('crypto');
var hash = crypto.createHash('sha256');
var code = 'bacon';
hash.update(code);
var hashedCode = hash.digest('hex');
console.log(hashedCode);
Make use of the digest() :
var crypto = require('crypto');
var hash = crypto.createHash('sha256');
var code = 'bacon';
hash.update(code);
var hashedCode = hash.digest('hex');
console.log(hashedCode);