feature(events) add ability to remove all added listeners

client/cloudcmd.js

@@ -48,13 +48,13 @@ function getPrefix(prefix) {
 
 const onUpdateFound = wraptile(async (config) => {
     const {prefix} = config;
-    
+    const {DOM} = window;
-    const js = promisify(window.DOM.load.js);
+    const js = promisify(DOM.load.js);
-    const css = promisify(window.DOM.load.css);
     
     await js(`${prefix}dist/cloudcmd.common.js`);
     await js(`${prefix}dist/cloudcmd.js`);
     
+    DOM.Events.removeAll();
     window.CloudCmd(config);
 });
 

client/dom/events/event-store.js

@@ -0,0 +1,20 @@
+'use strict';
+
+let list = [];
+
+module.exports.add = (el, name, fn) => {
+    list.push([
+        el,
+        name,
+        fn,
+    ]);
+};
+
+module.exports.clear = () => {
+    list = [];
+};
+
+module.exports.get = () => {
+    return list;
+};
+

client/dom/events/event-store.spec.js

@@ -0,0 +1,34 @@
+'use strict';
+
+const test = require('tape');
+const eventStore = require('./event-store');
+
+test('event-store: get', (t) => {
+    const el = {};
+    const name = 'click';
+    const fn = () => {};
+    
+    eventStore.add(el, name, fn);
+    const result = eventStore.get();
+    const expected = [
+        [el, name, fn],
+    ];
+    
+    t.deepEqual(expected, result, 'should equal');
+    t.end();
+});
+
+test('event-store: clear', (t) => {
+    const el = {};
+    const name = 'click';
+    const fn = () => {};
+    
+    eventStore.add(el, name, fn);
+    eventStore.clear();
+    
+    const result = eventStore.get();
+    const expected = [];
+    
+    t.deepEqual(expected, result, 'should equal');
+    t.end();
+});

client/dom/events/index.js

@@ -1,6 +1,7 @@
 'use strict';
 
 const itype = require('itype/legacy');
+const EventStore = require('./event-store');
 
 module.exports = new EventsProto();
 
@@ -98,7 +99,10 @@ function EventsProto() {
         checkType(type);
         
         parseArgs(type, element, listener, (element, args) => {
-            element.addEventListener.apply(element, args);
+            const [name, fn, options] = args;
+            
+            element.addEventListener(name, fn, options);
+            EventStore.add(element, name, fn);
         });
         
         return Events;
@@ -144,6 +148,20 @@ function EventsProto() {
         return Events;
     };
     
+    /**
+     * remove all added event listeners
+     *
+     * @param listener
+     */
+    this.removeAll = () => {
+        const events = EventStore.get();
+        
+        for (const [el, name, fn] of events)
+            el.removeEventListener(name, fn);
+        
+        EventStore.clear();
+    };
+    
     /**
      * safe add event keydown listener
      *