Set default seed value

lib/random/random.js

@@ -8,13 +8,9 @@ const {logger} = require('../logging')
 class random {
   /**
    * Must be called before any other methods can be called to initialize MersenneTwister
-   * @param {number|null|undefined} seed - Value to initialize MersenneTwister
+   * @param {number} seed - Value to initialize MersenneTwister
    */
-  static init (seed) {
-    if (seed === null || seed === undefined) {
-      random.seed = new Date().getTime()
-    }
-
+  static init (seed = new Date().getTime()) {
     random.twister = new MersenneTwister()
     random.twister.seed(random.seed)
   }