Redux changes and refactoring

src/redux/reducers/error_reducer.js

@@ -0,0 +1,26 @@
+import {createReducer} from 'redux-starter-kit';
+import {CLEAR_ERROR, SET_ERROR_INFO} from '../actions/error_actions';
+
+export const errorReducer = createReducer({
+  DisplayError: false,
+  ErrorCritical: false,
+  ErrorStack: [],
+}, {
+  [CLEAR_ERROR]: state => {
+    const errorStack = (state.ErrorStack.length > 0) ? state.ErrorStack.slice(1) : [];
+    return {
+      ...state,
+      DisplayError: (errorStack.length > 0),
+      ErrorStack: errorStack,
+    }
+  },
+  [SET_ERROR_INFO]: (state, action) => {
+    const errorStack = [action.payload.msg, ...state.ErrorStack];
+    return {
+      ...state,
+      DisplayError: true,
+      ErrorCritical: state.ErrorCritical || action.payload.critical,
+      ErrorStack: errorStack,
+    }
+  }
+});