Move Cypress directory and convert it to JavaScript (#2170)

src/util.js

@@ -280,9 +280,9 @@ function getCryptoRandomInt(min, max) {
 }
 exports.getCryptoRandomInt = getCryptoRandomInt;
 /**
- * Generate a secret
- * @param length Lenght of secret to generate
- * @returns
+ * Generate a random alphanumeric string of fixed length
+ * @param length Length of string to generate
+ * @returns string
  */
 function genSecret(length = 64) {
     let secret = "";