Avoid usage of impure functions within reducers

fixes #2

Author: gor181

dist/react-notification-system-redux.js

@@ -16631,6 +16631,7 @@ function show(opts) {
   return _extends({
     type: _const.RNS_SHOW_NOTIFICATION
   }, opts, {
+    uid: opts.uid || Date.now(),
     level: level
   });
 }
@@ -16787,7 +16788,7 @@ function Notifications(state, action) {
 
   switch (action.type) {
     case _const.RNS_SHOW_NOTIFICATION:
-      return [].concat(_toConsumableArray(state), [_extends({}, (0, _lodash.omit)(action, 'type'), { uid: action.uid || Date.now() })]);
+      return [].concat(_toConsumableArray(state), [_extends({}, (0, _lodash.omit)(action, 'type'), { uid: action.uid })]);
     case _const.RNS_HIDE_NOTIFICATION:
       return (0, _lodash.filter)(state, function (notification) {
         return notification.uid !== action.uid;

dist/react-notification-system-redux.min.js

@@ -35,6 +35,7 @@ function show(opts) {
   return _extends({
     type: _const.RNS_SHOW_NOTIFICATION
   }, opts, {
+    uid: opts.uid || Date.now(),
     level: level
   });
 }

lib/actions.js

@@ -19,7 +19,7 @@ function Notifications(state, action) {
 
   switch (action.type) {
     case _const.RNS_SHOW_NOTIFICATION:
-      return [].concat(_toConsumableArray(state), [_extends({}, (0, _lodash.omit)(action, 'type'), { uid: action.uid || Date.now() })]);
+      return [].concat(_toConsumableArray(state), [_extends({}, (0, _lodash.omit)(action, 'type'), { uid: action.uid })]);
     case _const.RNS_HIDE_NOTIFICATION:
       return (0, _lodash.filter)(state, function (notification) {
         return notification.uid !== action.uid;

lib/reducer.js

@@ -18,6 +18,7 @@ export function show(opts, level = 'success') {
   return {
     type: RNS_SHOW_NOTIFICATION,
     ...opts,
+    uid: opts.uid || Date.now(),
     level
   };
 }

src/actions.js

@@ -7,7 +7,7 @@ export default function Notifications(state = [], action) {
     case RNS_SHOW_NOTIFICATION:
       return [
         ...state,
-        { ...omit(action, 'type'), uid: action.uid || Date.now() }
+        { ...omit(action, 'type'), uid: action.uid}
       ];
     case RNS_HIDE_NOTIFICATION:
       return filter(state, notification => {