Add support for symbol action types

Author: acdlite

src/__tests__/handleActions-test.js

@@ -22,6 +22,21 @@ describe('handleActions', () => {
       });
   });
 
+  it('works with symbol action types', () => {
+    const INCREMENT = Symbol();
+
+    const reducer = handleActions({
+      [INCREMENT]: ({ counter }, { payload: amount }) => ({
+        counter: counter + amount
+      })
+    });
+
+    expect(reducer({ counter: 3 }, { type: INCREMENT, payload: 7 }))
+      .to.deep.equal({
+        counter: 10
+      });
+  });
+
   it('accepts a default state as the second parameter', () => {
     const reducer = handleActions({
       INCREMENT: ({ counter }, { payload: amount }) => ({

src/handleActions.js

@@ -1,8 +1,9 @@
 import handleAction from './handleAction';
+import ownKeys from './ownKeys';
 import reduceReducers from 'reduce-reducers';
 
 export default function handleActions(handlers, defaultState) {
-  const reducers = Object.keys(handlers).map(type => {
+  const reducers = ownKeys(handlers).map(type => {
     return handleAction(type, handlers[type]);
   });
 

src/ownKeys.js

@@ -0,0 +1,13 @@
+export default function ownKeys(object) {
+  if (typeof Reflect !== 'undefined') {
+    return Reflect.ownKeys(object);
+  }
+
+  let keys = Object.getOwnPropertyNames(object);
+
+  if (typeof Object.getOwnPropertySymbols === 'function') {
+    keys = keys.concat(Object.getOwnPropertySymbols(object));
+  }
+
+  return keys;
+}