Merge pull request #3 from justingreenberg/feature/es-class-props

(feature/core) use es class instance fields

src/History.js

@@ -1,12 +1,14 @@
-export default class {
+export default class History {
+
+  items = [];
+  limit = 200;
 
   constructor(limit) {
     this.setLimit(limit);
-    this.items = [];
   }
 
   setLimit(limit) {
-    this.limit = Number(limit) > 0 ? Number(limit) : 200;
+    this.limit = Number(limit) > 0 ? Number(limit) : this.limit;
   }
 
   add(payload) {

src/Mediator.js

@@ -1,9 +1,6 @@
-export default class {
+export default class Mediator {
 
-  constructor() {
-    this.subscribers = [];
-    this.publish = ::this.publish;
-  }
+  subscribers = [];
 
   subscribe(subscriber) {
     if (this.subscribers.indexOf(subscriber) === -1) {
@@ -18,7 +15,7 @@ export default class {
     }
   }
 
-  publish(channel, param) {
+  publish = (channel, param) => {
     this.subscribers.forEach((subscriber) => {
       if (!subscriber) {
         this.unsubscribe(subscriber);

src/index.js

@@ -1,26 +1,26 @@
 import Mediator from './Mediator';
 import History from './History';
 
-export default class {
+export default class Refraction {
+
+  middlewares = [];
+
+  mediator = new Mediator();
+  history = new History();
 
   constructor(middlewares = []) {
-    this.mediator = new Mediator();
-    this.history = new History();
-    this.middlewares = [];
-    this.addToHistory = ::this.addToHistory;
-    this.applyMiddleware = ::this.applyMiddleware;
     this.applyMiddleware(...middlewares, this.addToHistory);
   }
 
-  applyMiddleware(...middlewares) {
+  applyMiddleware = (...middlewares) => {
     if (middlewares.length === 1) {
       this.middlewares.push(middlewares[0]);
     } else if (middlewares.length > 0) {
       middlewares.forEach((middleware) => this.applyMiddleware(middleware));
     }
   }
 
-  addToHistory(channel, param) {
+  addToHistory = (channel, param) => {
     this.history.add({
       channel,
       time: (performance && performance.now) ? performance.now() : null,