Entities cleanup, Primitive concept introduced

js/entity/primitive/Guid.js

@@ -0,0 +1,32 @@
+import Primitive from "./Primitive";
+
+export default class Guid extends Primitive {
+
+    static generateGuid(random) {
+        let values = new Uint32Array(4);
+        if (random === true) {
+            crypto.getRandomValues(values)
+        }
+        let result = ""
+        values.forEach(n => {
+            result += ('00000000' + n.toString(16).toUpperCase()).slice(-8)
+        })
+        return result
+    }
+
+    constructor(guid) {
+        super()
+        // Using constructor equality and not instanceof in order to consider both primitives and objects
+        if (guid?.constructor === Boolean) {
+            guid = Guid.generateGuid(guid == true)
+        }
+        if (guid instanceof Guid) {
+            guid = guid.value
+        }
+        this.value = guid
+    }
+
+    toString() {
+        return this.value.toString()
+    }
+}