refactor debugger tab

src/app/tabs/debugger-tab.js

 var yo = require('yo-yo')
-var css = require('./styles/debugger-tab-styles')
+var csjs = require('csjs-inject')
+var remixLib = require('remix-lib')
 
-function debuggerTab (api = {}, events = {}, opts = {}) {
-  var el = yo`
-    <div class="${css.debuggerTabView} "id="debugView">
-      <div id="debugger" class="${css.debugger}"></div>
-    </div>`
-  return { render () { return el } }
-}
+var EventManager = remixLib.EventManager
+var styles = require('../../ui/styles-guide/theme-chooser').chooser()
 
-module.exports = debuggerTab
+module.exports = class DebuggerTab {
+  constructor (opts = { api: {}, events: {} }) {
+    const self = this
+    self.event = new EventManager()
+    self._api = opts.api
+    self._events = opts.events
+    self._view = { el: null }
+    self.data = {}
+    self._components = {}
+  }
+  render () {
+    const self = this
+    if (self._view.el) return self._view.el
+    self._view.el = yo`
+      <div class="${css.debuggerTabView} "id="debugView">
+        <div id="debugger" class="${css.debugger}"></div>
+      </div>`
+    return self._view.el
+  }
+}
+const css = csjs`
+  .debuggerTabView {
+    padding: 2%;
+  }
+  .debugger {
+    margin-bottom: 1%;
+    ${styles.rightPanel.debuggerTab.box_Debugger}
+  }
+`

src/app/tabs/styles/debugger-tab-styles.js

-var csjs = require('csjs-inject')
-var styleGuide = require('../../ui/styles-guide/theme-chooser')
-var styles = styleGuide.chooser()
-
-var css = csjs`
-  .debuggerTabView {
-    padding: 2%;
-  }
-  .debugger {
-    margin-bottom: 1%;
-    ${styles.rightPanel.debuggerTab.box_Debugger}
-  }
-`
-
-module.exports = css