Fix error introduced by lint changes

.eslintrc.yml

@@ -25,7 +25,7 @@ rules:
   no-unused-vars:
     - error
     - argsIgnorePattern: ^_
-      varsIgnorePattern: ^_
+      varsIgnorePattern: ^_|^Promise$
   semi:
     - error
     - always

package.json

@@ -2,7 +2,7 @@
   "author": "Calvin Montgomery",
   "name": "CyTube",
   "description": "Online media synchronizer and chat",
-  "version": "3.55.6",
+  "version": "3.55.7",
   "repository": {
     "url": "http://github.com/calzoneman/sync"
   },

src/channel/channel.js

@@ -9,6 +9,8 @@ import { ChannelStateSizeError } from '../errors';
 import { EventEmitter } from 'events';
 import { throttle } from '../util/throttle';
 import Logger from '../logger';
+// Not directly used, but needs to be in scope for async functions
+import Promise from 'bluebird';
 
 const LOGGER = require('@calzoneman/jsli')('channel');