update brain syntax

README.md

@@ -3,11 +3,12 @@
 [![Build Status](https://travis-ci.org/gasolin/webby.png)](https://travis-ci.org/gasolin/webbybot) [![codecov.io](https://codecov.io/github/gasolin/webbybot/coverage.svg?branch=master)](https://codecov.io/github/gasolin/webbybot?branch=master) [![Dependency Status](https://david-dm.org/gasolin/webbybot.svg)](https://david-dm.org/gasolin/webbybot) [![npm](https://img.shields.io/npm/v/webbybot.svg)](https://www.npmjs.com/package/webbybot)
 [![Join the chat at https://gitter.im/gasolin/webbybot](https://badges.gitter.im/gasolin/webbybot.svg)](https://gitter.im/gasolin/webbybot?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
-[Webbybot](https://github.com/gasolin/webbybot/) is the next generation message/chat bot framework written in ES6 and plain javascript. Fully compatible with [Hubot](https://github.com/github/hubot)'s middleware and plugins.
+[Webbybot](https://github.com/gasolin/webbybot/) is the next generation framework to build message/chat bots, written in ES6 and plain javascript.
+Fully compatible with [Hubot](https://github.com/github/hubot)'s middleware and plugins.
 
 The Differences:
 
-* Port hubot from coffeescript to es6 (plain JS) with babel.
+* Port hubot from CoffeeScript to ES6 (plain JS) with babel.
 * Auto test coverage report with Codecov.
 * Auto linting with eslint.
 * Support .env file to setup system parameters

package.json

@@ -1,6 +1,6 @@
 {
   "name": "webbybot",
-  "version": "3.2.5",
+  "version": "3.2.6",
   "description": "A simple helpful robot written in es6, compatible with hubot",
   "main": "dist/index.js",
   "bin": {

src/brain.js

@@ -27,11 +27,10 @@ class Brain extends EventEmitter {
    * Returns the instance for chaining.
    */
   set(key, value) {
-    let pair;
+    let pair = {};
     if (key === Object(key)) {
       pair = key;
     } else {
-      pair = {};
       pair[key] = value;
     }
     // extend this.data._private
@@ -47,8 +46,7 @@ class Brain extends EventEmitter {
    * Returns the value.
    */
   get(key) {
-    let ref;
-    return (ref = this.data._private[key]) != null ? ref : null;
+    return this.data._private[key] || null;
   }
 
   /**
@@ -58,7 +56,7 @@ class Brain extends EventEmitter {
    * Returns the instance for chaining.
    */
   remove(key) {
-    if (this.data._private[key] != null) {
+    if (this.data._private.hasOwnProperty(key)) {
       delete this.data._private[key];
     }
     return this;