Remove jQuery from utils folder

src/utils.js

@@ -800,6 +800,25 @@ const extend = function() {
   return target
 }
 
+const grep = (elems, callback, invert) => {
+  var callbackInverse
+  var matches = []
+  var i = 0
+  var length = elems.length
+  var callbackExpect = !invert
+
+  // Go through the array, only saving the items
+  // that pass the validator function
+  for (; i < length; i++) {
+    callbackInverse = !callback(elems[i], i)
+    if (callbackInverse !== callbackExpect) {
+      matches.push(elems[i])
+    }
+  }
+
+  return matches
+}
+
 export {
   unique,
   defer,
@@ -835,5 +854,6 @@ export {
   isFunction,
   callbacks,
   inArray,
-  extend
+  extend,
+  grep,
 }

src/utils/image-loader.js

@@ -2,30 +2,34 @@ import $ from 'jquery'
 
 // utils
 const trackLoading = function(image, src) {
-  var def
-  def = $.Deferred()
+  let promiseResolve
+  let promiseReject
+  const promise = new Promise((resolve, reject) => {
+    resolve = promiseResolve
+    reject = promiseReject
+  })
   if (src) {
     image.src = src
   }
   if (image.complete) {
-    def.resolve(image)
+    promiseResolve(image)
   } else {
     $(image).one('load', () => {
-      return def.resolve(image)
+      return promiseResolve(image)
     })
     $(image).one('error', () => {
-      return def.reject(image)
+      return promiseReject(image)
     })
   }
 
-  return def.promise()
+  return promise
 }
 
 const imageLoader = function(image) {
   // if argument is an array, treat as
   // load(['1.jpg', '2.jpg'])
-  if ($.isArray(image)) {
-    return $.when.apply(null, $.map(image, imageLoader))
+  if (Array.isArray(image)) {
+    return $.when.apply(null, image.map(imageLoader))
   }
   if (image.src) {
     return trackLoading(image)
@@ -35,16 +39,22 @@ const imageLoader = function(image) {
 }
 
 const videoLoader = function(src) {
-  var def = $.Deferred()
+  let promiseResolve
+  let promiseReject
+  const promise = new Promise((resolve, reject) => {
+    resolve = promiseResolve
+    reject = promiseReject
+  })
+  const video = document.createElement('video')
 
-  $('<video/>')
-    .on('loadeddata', def.resolve)
-    .on('error', def.reject)
-    .attr('src', src)
-    .get(0)
-    .load()
+  video.addEventListener('loadeddata', promiseResolve)
+  video.addEventListener('error', promiseReject)
 
-  return def.promise()
+  video.setAttribute('src', src)
+
+  video.load()
+
+  return promise
 }
 
 export { imageLoader, videoLoader }

src/utils/messages.js

@@ -1,12 +1,12 @@
-import $ from 'jquery'
 import { isWindowDefined } from './is-window-defined'
+import { grep } from '../utils'
 
 // utils
 
 var callbacks = {}
 
 isWindowDefined() &&
-  $(window).on('message', ({ originalEvent: e }) => {
+  window.addEventListener('message', ({ originalEvent: e }) => {
     var i, item, len, message, ref, results
     try {
       message = JSON.parse(e.data)
@@ -41,7 +41,7 @@ const registerMessage = function(type, sender, callback) {
 
 const unregisterMessage = function(type, sender) {
   if (type in callbacks) {
-    callbacks[type] = $.grep(callbacks[type], function(item) {
+    callbacks[type] = grep(callbacks[type], function(item) {
       return item[0] !== sender
     })
 

src/utils/pusher.js

@@ -1,5 +1,3 @@
-import $ from 'jquery'
-
 import { Pusher } from '../vendor/pusher'
 
 // utils.pusher
@@ -24,7 +22,7 @@ class ManagedPusher extends Pusher {
   unsubscribe(name) {
     super.unsubscribe(...arguments)
     // Schedule disconnect if no channels left.
-    if ($.isEmptyObject(this.channels.channels)) {
+    if (this.channels.channels && Object.keys(this.channels.channels).length === 0) {
       this.disconnectTimeout = setTimeout(() => {
         this.disconnectTimeout = null
         return this.disconnect()

src/widget/tabs/preview-tab.js

@@ -170,10 +170,10 @@ class PreviewTab extends BasePreviewTab {
     }
     src = URL.createObjectURL(blob)
     op = videoLoader(src)
-    op.fail(() => {
+    op.catch(() => {
       URL.revokeObjectURL(src)
       return df.reject()
-    }).done(() => {
+    }).then(() => {
       var videoTag
       df.resolve()
       this.dialogApi.always(function() {