Add placeholder store for config

src/store/config/actions.ts

@@ -0,0 +1 @@
+export {}

src/store/config/reducers.ts

@@ -0,0 +1,14 @@
+import {
+  ConfigState, ConfigActionTypes
+} from './types'
+
+const initialState: ConfigState = {
+  alwaysShowPoints: false
+}
+
+export default function(state = initialState, action: ConfigActionTypes): ConfigState {
+  switch (action.type) {
+    default: 
+      return state
+  }
+}

src/store/config/types.ts

@@ -0,0 +1,13 @@
+export interface ConfigState {
+  alwaysShowPoints: boolean
+}
+
+export const SET_CONFIG_VALUE = 'SET_CONFIG_VALUE'
+
+interface SetConfigValueAction {
+  type: typeof SET_CONFIG_VALUE
+  key: string
+  value: any
+}
+
+export type ConfigActionTypes = SetConfigValueAction

src/store/index.ts

@@ -1,8 +1,10 @@
 import { createStore, combineReducers, compose } from 'redux'
 import calculator from './calculator/reducers'
+import config from './config/reducers'
 
 const rootReducer = combineReducers({
   calculator, 
+  config
 })
 
 export type AppState = ReturnType<typeof rootReducer>