Switch to single store

Author: usulpro

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@storybook/addon-devkit",
-  "version": "1.0.0-alpha.0",
+  "version": "1.0.0-alpha.1",
   "description": "Storybook Addon Development Kit",
   "author": {
     "name": "Oleg Proskurin",

src/ChannelStore.js

@@ -150,3 +150,10 @@ export default class ChannelStore {
     this.removeData();
   };
 }
+
+let singleStore;
+
+export const getSingleStore = (...args) => {
+  singleStore = singleStore || new ChannelStore(...args)
+  return singleStore;
+};

src/withChannel.js

@@ -1,6 +1,6 @@
 import React from 'react';
 
-import ChannelStore from './ChannelStore';
+import { getSingleStore } from './ChannelStore';
 
 const getDisplayName = WrappedComponent =>
   WrappedComponent.displayName || WrappedComponent.name || 'Component';
@@ -45,7 +45,7 @@ const withChannel = ({
         isReceived,
       };
 
-      this.store = new ChannelStore({
+      this.store = getSingleStore({
         EVENT_ID_INIT,
         EVENT_ID_DATA,
         EVENT_ID_BACK,