Merge pull request #14 from github/fix-wrap

Operate on the class object proptype when wrapping

Author: koddsson

catalyst/src/wrap.ts

@@ -1,9 +1,9 @@
 export function wrap(obj: any, name: string, fn: (...args: any[]) => any) {
-  if (!obj[name]) {
+  if (!obj.prototype[name]) {
     obj[name] = fn
   } else {
-    const oldFn = obj[name]
-    obj[name] = function () {
+    const oldFn = obj.prototype[name]
+    obj.prototype[name] = function () {
       oldFn.call(this)
       fn.call(this, this)
     }