feat(Vector)

src/utils/concept.js

@@ -1,28 +1,31 @@
 export function satisfiesConcept(obj, pure_virtual, virtual, debug) {
   if (typeof obj !== 'object' || obj === null) {
     return false;
-  }
+  } 
+
+  const desc = Object.getOwnPropertyDescriptors(obj.constructor.prototype)
+
   if (debug) {
     const missingMethods = []
 
     pure_virtual.forEach((method) => {
-      if (typeof obj[method] !== 'function') {
+      if (method in desc == false) {
         missingMethods.push(method)
       }
     })
 
     virtual.forEach((method) => {
-      if (!(method in obj)) {
+      if (method in obj == false) {
         missingMethods.push(method)
       }
     })
 
     if (missingMethods.length !== 0) {
-      console.debug(obj.constructor.name, missingMethods)
+      console.debug('this class doesn\'t have methods', obj.constructor.name, missingMethods)
       return false
     }
   } else {
-    if (!pure_virtual.every((method) => typeof obj[method] === 'function')) {
+    if (!pure_virtual.every((method) => method in desc)) {
       return false;
     }