Refactor Profile to use ES6.

app/assets/javascripts/profile/profile.js.es6

-(function() {
-  var bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
-
-  this.Profile = (function() {
-    function Profile(opts) {
-      var cropOpts, ref;
-      if (opts == null) {
-        opts = {};
-      }
-      this.onSubmitForm = bind(this.onSubmitForm, this);
-      this.form = (ref = opts.form) != null ? ref : $('.edit-user');
-      $('.js-preferences-form').on('change.preference', 'input[type=radio]', function() {
-        return $(this).parents('form').submit();
-      // Automatically submit the Preferences form when any of its radio buttons change
-      });
-      $('#user_notification_email').on('change', function() {
-        return $(this).parents('form').submit();
-      // Automatically submit email form when it changes
-      });
-      $('.update-username').on('ajax:before', function() {
-        $('.loading-username').show();
-        $(this).find('.update-success').hide();
-        return $(this).find('.update-failed').hide();
-      });
-      $('.update-username').on('ajax:complete', function() {
-        $('.loading-username').hide();
-        $(this).find('.btn-save').enable();
-        return $(this).find('.loading-gif').hide();
-      });
-      $('.update-notifications').on('ajax:success', function(e, data) {
-        if (data.saved) {
-          return new Flash("Notification settings saved", "notice");
-        } else {
-          return new Flash("Failed to save new settings", "alert");
-        }
-      });
+(global => {
+  class Profile {
+    constructor(opts = {}) {
+      this.onSubmitForm = this.onSubmitForm.bind(this);
+      this.form = opts.form || $('.edit-user');
       this.bindEvents();
-      cropOpts = {
+      this.initAvatarGlCrop();
+    }
+
+    initAvatarGlCrop() {
+      const cropOpts = {
         filename: '.js-avatar-filename',
         previewImage: '.avatar-image .avatar',
         modalCrop: '.modal-profile-crop',
@@ -46,23 +19,51 @@
       this.avatarGlCrop = $('.js-user-avatar-input').glCrop(cropOpts).data('glcrop');
     }
 
-    Profile.prototype.bindEvents = function() {
-      return this.form.on('submit', this.onSubmitForm);
-    };
+    bindEvents() {
+      $('.js-preferences-form').on('change.preference', 'input[type=radio]', this.submitForm);
+      $('#user_notification_email').on('change', this.submitForm);
+      $('.update-username').on('ajax:before', this.beforeUpdateUsername);
+      $('.update-username').on('ajax:complete', this.afterUpdateUsername);
+      $('.update-notifications').on('ajax:success', this.onUpdateNotifs);
+      this.form.on('submit', this.onSubmitForm);
+    }
+
+    submitForm() {
+      return $(this).parents('form').submit();
+    }
 
-    Profile.prototype.onSubmitForm = function(e) {
+    onSubmitForm(e) {
       e.preventDefault();
       return this.saveForm();
-    };
+    }
+
+    beforeUpdateUsername() {
+      $('.loading-username').show();
+      $(this).find('.update-success').hide();
+      return $(this).find('.update-failed').hide();
+    }
+
+    afterUpdateUsername() {
+      $('.loading-username').hide();
+      $(this).find('.btn-save').enable();
+      return $(this).find('.loading-gif').hide();
+    }
+
+    onUpdateNotifs(e, data) {
+      return data.saved ?
+        new Flash("Notification settings saved", "notice") :
+        new Flash("Failed to save new settings", "alert");
+    }
+
+    saveForm() {
+      const self = this;
+      const formData = new FormData(this.form[0]);
+      const avatarBlob = this.avatarGlCrop.getBlob();
 
-    Profile.prototype.saveForm = function() {
-      var avatarBlob, formData, self;
-      self = this;
-      formData = new FormData(this.form[0]);
-      avatarBlob = this.avatarGlCrop.getBlob();
       if (avatarBlob != null) {
         formData.append('user[avatar]', avatarBlob, 'avatar.png');
       }
+
       return $.ajax({
         url: this.form.attr('action'),
         type: this.form.attr('method'),
@@ -70,37 +71,33 @@
         dataType: "json",
         processData: false,
         contentType: false,
-        success: function(response) {
+        success: (response) => {
           return new Flash(response.message, 'notice');
         },
-        error: function(jqXHR) {
+        error: (jqXHR) => {
           return new Flash(jqXHR.responseJSON.message, 'alert');
         },
-        complete: function() {
+        complete: () => {
           window.scrollTo(0, 0);
           // Enable submit button after requests ends
           return self.form.find(':input[disabled]').enable();
         }
       });
-    };
-
-    return Profile;
-
-  })();
+    }
+  }
 
   $(function() {
     $(document).on('focusout.ssh_key', '#key_key', function() {
-      var $title, comment;
-      $title = $('#key_title');
-      comment = $(this).val().match(/^\S+ \S+ (.+)\n?$/);
+      const $title = $('#key_title');
+      const comment = $(this).val().match(/^\S+ \S+ (.+)\n?$/);
       if (comment && comment.length > 1 && $title.val() === '') {
         return $title.val(comment[1]).change();
       }
     // Extract the SSH Key title from its comment
     });
-    if (gl.utils.getPagePath() === 'profiles') {
+    if (global.utils.getPagePath() === 'profiles') {
       return new Profile();
     }
   });
 
-}).call(this);
+})(window.gl || (window.gl = {}));