fix(store): prevent passing of action creator function to store dispatch and effects (#1914)

Closes #1906

Author: SerkanSipahi

modules/effects/src/effect_notification.ts

@@ -31,7 +31,12 @@ export function reportInvalidActions(
 }
 
 function isAction(action: any): action is Action {
-  return action && action.type && typeof action.type === 'string';
+  return (
+    typeof action !== 'function' &&
+    action &&
+    action.type &&
+    typeof action.type === 'string'
+  );
 }
 
 function getEffectName({

modules/store/src/actions_subject.ts

@@ -13,12 +13,16 @@ export class ActionsSubject extends BehaviorSubject<Action>
   }
 
   next(action: Action): void {
-    if (typeof action === 'undefined') {
+    if (typeof action === 'function') {
+      throw new TypeError(`
+        Dispatch expected an object, instead it received a function.
+        If you're using the createAction function, make sure to invoke the function
+        before dispatching the action. For example, someAction should be someAction().`);
+    } else if (typeof action === 'undefined') {
       throw new TypeError(`Actions must be objects`);
     } else if (typeof action.type === 'undefined') {
       throw new TypeError(`Actions must have a type property`);
     }
-
     super.next(action);
   }