made checks explicit

stefanpenner · May 20, 2017 · 67f81c2 · 67f81c2
1 parent b37a3d0
commit 67f81c2
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/lib/es6-promise/then.js b/lib/es6-promise/then.js
@@ -21,11 +21,11 @@ export default function then(onFulfillment, onRejection) {
 
   const { _state } = parent;
 
-  if (_state) {
-    const callback = arguments[_state - 1];
-    asap(() => invokeCallback(_state, child, callback, parent._result));
-  } else {
+  if (_state === PENDING) {
     subscribe(parent, child, onFulfillment, onRejection);
+  } else {
+    const callback = _state === FULFILLED ? onFulfillment : onRejection;
+    asap(() => invokeCallback(_state, child, callback, parent._result));
   }
 
   return child;