diff --git a/.codeclimate.yml b/.codeclimate.yml
index 44bd98274b..b28ca8ae10 100644
--- a/.codeclimate.yml
+++ b/.codeclimate.yml
@@ -28,6 +28,7 @@ engines:
     config:
       extensions:
         - .es6
+      ignore_warnings: true
   fixme:
     enabled: false
   rubocop:
diff --git a/.eslintrc b/.eslintrc
index 9faa37508e..9e9b612342 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,6 +1,7 @@
-ecmaFeatures:
-  modules: true
-  jsx: true
+parserOptions:
+  sourceType: module
+  ecmaFeatures:
+    jsx: true
 
 env:
   amd: true
@@ -61,7 +62,7 @@ rules:
   no-empty-pattern: 2
   no-eq-null: 2
   no-eval: 2
-  no-extend-native: 2
+  no-extend-native: 1
   no-extra-bind: 2
   no-fallthrough: 2
   no-floating-decimal: 0
@@ -78,7 +79,7 @@ rules:
   no-native-reassign: 2
   no-new-func: 2
   no-new-wrappers: 2
-  no-new: 2
+  no-new: 1
   no-octal-escape: 2
   no-octal: 2
   no-proto: 2
diff --git a/app/assets/javascripts/sufia/autocomplete.es6 b/app/assets/javascripts/sufia/autocomplete.es6
index f886de2f83..95bd01068e 100644
--- a/app/assets/javascripts/sufia/autocomplete.es6
+++ b/app/assets/javascripts/sufia/autocomplete.es6
@@ -1,66 +1,68 @@
+import Location from 'sufia/autocomplete/location'
+import Subject from 'sufia/autocomplete/subject'
+import Language from 'sufia/autocomplete/language'
+import Work from 'sufia/autocomplete/work'
+
+
 export class Autocomplete {
-  constructor() {
-  }
+    constructor() {
+    }
 
-  // This is the initial setup for the form.
-  setup() {
-      $('[data-autocomplete]').each((index, value) => {
-          let selector = $(value)
-          switch (selector.data('autocomplete')) {
-            case "subject":
-              this.autocompleteSubject(selector);
-              break;
-            case "language":
-              this.autocompleteLanguage(selector);
-              break;
-            case "based_near":
-              this.autocompleteLocation(selector);
-              break;
-            case "work":
-              var user = selector.data('user');
-              var id = selector.data('id');
-              this.autocompleteWork(selector, user, id);
-              break;
-          }
-      });
-  }
+    // This is the initial setup for the form.
+    setup() {
+        $('[data-autocomplete]').each((index, value) => {
+            let selector = $(value)
+            switch (selector.data('autocomplete')) {
+              case "subject":
+                this.autocompleteSubject(selector);
+                break;
+              case "language":
+                this.autocompleteLanguage(selector);
+                break;
+              case "based_near":
+                this.autocompleteLocation(selector);
+                break;
+              case "work":
+                var user = selector.data('user');
+                var id = selector.data('id');
+                this.autocompleteWork(selector, user, id);
+                break;
+            }
+        });
+    }
 
-  // attach an auto complete based on the field
-  fieldAdded(cloneElem) {
-    var $cloneElem = $(cloneElem);
-    // FIXME this code (comparing the id) depends on a bug. Each input has an id and
-    // the id is duplicated when you press the plus button. This is not valid html.
-    if (/_based_near$/.test($cloneElem.attr("id"))) {
-        this.autocompleteLocation($cloneElem);
-    } else if (/_language$/.test($cloneElem.attr("id"))) {
-        this.autocompleteLanguage($cloneElem);
-    } else if (/_subject$/.test($cloneElem.attr("id"))) {
-        this.autocompleteSubject($cloneElem);
+    // attach an auto complete based on the field
+    fieldAdded(cloneElem) {
+      var $cloneElem = $(cloneElem);
+      // FIXME this code (comparing the id) depends on a bug. Each input has an id and
+      // the id is duplicated when you press the plus button. This is not valid html.
+      if (/_based_near$/.test($cloneElem.attr("id"))) {
+          this.autocompleteLocation($cloneElem);
+      } else if (/_language$/.test($cloneElem.attr("id"))) {
+          this.autocompleteLanguage($cloneElem);
+      } else if (/_subject$/.test($cloneElem.attr("id"))) {
+          this.autocompleteSubject($cloneElem);
+      }
     }
-  }
 
-  autocompleteLocation(field) {
-      var loc = require('sufia/autocomplete/location');
-      new loc.Location(field, field.data('autocomplete-url'))
-  }
+    autocompleteLocation(field) {
+        new Location(field, field.data('autocomplete-url'))
+    }
 
-  autocompleteSubject(field) {
-      var subj = require('sufia/autocomplete/subject');
-      new subj.Subject(field, field.data('autocomplete-url'))
-  }
+    autocompleteSubject(field) {
+        new Subject(field, field.data('autocomplete-url'))
+    }
 
-  autocompleteLanguage(field) {
-      var lang = require('sufia/autocomplete/language');
-      new lang.Language(field, field.data('autocomplete-url'))
-  }
+    autocompleteLanguage(field) {
+        new Language(field, field.data('autocomplete-url'))
+    }
 
-  autocompleteWork(field, user, id) {
-    var work = require('sufia/autocomplete/work')
-    new work.Work(
-      field,
-      field.data('autocomplete-url'),
-      user,
-      id
-    )
-  }
+    autocompleteWork(field, user, id) {
+        new Work(
+            field,
+            field.data('autocomplete-url'),
+            user,
+            id
+        )
+    }
 }
diff --git a/app/assets/javascripts/sufia/autocomplete/language.es6 b/app/assets/javascripts/sufia/autocomplete/language.es6
index 8d2d228b63..f09d712f38 100644
--- a/app/assets/javascripts/sufia/autocomplete/language.es6
+++ b/app/assets/javascripts/sufia/autocomplete/language.es6
@@ -1,4 +1,4 @@
-export class Language {
+export default class Language {
   constructor(element, url) {
     this.url = url
     element.autocomplete(this.options());
@@ -22,4 +22,3 @@ export class Language {
     };
   }
 }
-
diff --git a/app/assets/javascripts/sufia/autocomplete/location.es6 b/app/assets/javascripts/sufia/autocomplete/location.es6
index f257dc9778..2e24b33f41 100644
--- a/app/assets/javascripts/sufia/autocomplete/location.es6
+++ b/app/assets/javascripts/sufia/autocomplete/location.es6
@@ -1,4 +1,4 @@
-export class Location {
+export default class Location {
   constructor(element, url) {
     this.url = url
     element.autocomplete(this.options());
diff --git a/app/assets/javascripts/sufia/autocomplete/subject.es6 b/app/assets/javascripts/sufia/autocomplete/subject.es6
index 35fde078aa..fd38c208bc 100644
--- a/app/assets/javascripts/sufia/autocomplete/subject.es6
+++ b/app/assets/javascripts/sufia/autocomplete/subject.es6
@@ -1,4 +1,4 @@
-export class Subject {
+export default class Subject {
   constructor(element, url) {
     this.url = url
     element.autocomplete(this.options());
@@ -22,5 +22,3 @@ export class Subject {
     };
   }
 }
-
-
diff --git a/app/assets/javascripts/sufia/autocomplete/work.es6 b/app/assets/javascripts/sufia/autocomplete/work.es6
index 586bd29959..bfbd7b698b 100644
--- a/app/assets/javascripts/sufia/autocomplete/work.es6
+++ b/app/assets/javascripts/sufia/autocomplete/work.es6
@@ -1,4 +1,4 @@
-export class Work {
+export default class Work {
   // Autocomplete for finding possible related works (child and parent).
   constructor(element, url, user, id) {
     this.url = url;
diff --git a/app/assets/javascripts/sufia/notifications.es6 b/app/assets/javascripts/sufia/notifications.es6
index 3640cce6c9..1bb73e0af6 100644
--- a/app/assets/javascripts/sufia/notifications.es6
+++ b/app/assets/javascripts/sufia/notifications.es6
@@ -13,28 +13,28 @@ export class Notifications {
   }
 
   poller(interval, url) {
-    setInterval(() => { this.fetchUpdates(url) }, interval);
+      setInterval(() => { this.fetchUpdates(url) }, interval);
   }
 
   fetchUpdates(url) {
-    $.getJSON( url, (data) => this.updatePage(data))
+      $.getJSON( url, (data) => this.updatePage(data))
   }
 
   updatePage(data) {
-    let notification = $('.notify_number')
-    notification.find('.count').html(data.notify_number)
-    if (data.notify_number == 0) {
-      notification.addClass('label-default')
-      notification.removeClass('label-danger')
-    } else {
-      notification.addClass('label-danger')
-      notification.removeClass('label-default')
-    }
+      let notification = $('.notify_number')
+      notification.find('.count').html(data.notify_number)
+      if (data.notify_number === 0) {
+          notification.addClass('label-default')
+          notification.removeClass('label-danger')
+      } else {
+          notification.addClass('label-danger')
+          notification.removeClass('label-default')
+      }
   }
 
   getIntervalSeconds(default_interval) {
-    var seconds = parseInt(this.queryStringParam("notification_seconds"));
-    return seconds || default_interval;
+      var seconds = parseInt(this.queryStringParam("notification_seconds"), 10);
+      return seconds || default_interval;
   }
 
   // During development allow the frequency of the notifications check to
diff --git a/app/assets/javascripts/sufia/permissions/control.es6 b/app/assets/javascripts/sufia/permissions/control.es6
index c10164cd85..4506315722 100644
--- a/app/assets/javascripts/sufia/permissions/control.es6
+++ b/app/assets/javascripts/sufia/permissions/control.es6
@@ -6,10 +6,10 @@ export class PermissionsControl {
   /**
    * Initialize the save controls
    * @param {jQuery} element the jquery selector for the permissions container
-   * @param {String} template_id the identifier of the template for the added elements 
+   * @param {String} template_id the identifier of the template for the added elements
    */
   constructor(element, template_id) {
-    if (element.size() == 0) {
+    if (element.size() === 0) {
       return
     }
     this.element = element
@@ -19,7 +19,7 @@ export class PermissionsControl {
     this.group_controls = new GroupControls(this.element, this.registry)
   }
 
-  // retrieve object_name the name of the object to create 
+  // retrieve object_name the name of the object to create
   object_name() {
     return this.element.data('param-key')
   }
diff --git a/app/assets/javascripts/sufia/permissions/group_controls.es6 b/app/assets/javascripts/sufia/permissions/group_controls.es6
index bece9f21fc..d72e1534c3 100644
--- a/app/assets/javascripts/sufia/permissions/group_controls.es6
+++ b/app/assets/javascripts/sufia/permissions/group_controls.es6
@@ -56,7 +56,7 @@ export class GroupControls {
   }
 
   selectedGroupValid() {
-    return this.selectedGroup().index() != 0
+    return this.selectedGroup().index() !== 0
   }
 
   selectedGroup() {
@@ -64,7 +64,7 @@ export class GroupControls {
   }
 
   permissionValid() {
-    return this.selectedPermission().index() != 0
+    return this.selectedPermission().index() !== 0
   }
 
   selectedPermission() {
diff --git a/app/assets/javascripts/sufia/permissions/user_controls.es6 b/app/assets/javascripts/sufia/permissions/user_controls.es6
index fd69e03d1b..e9e68efa00 100644
--- a/app/assets/javascripts/sufia/permissions/user_controls.es6
+++ b/app/assets/javascripts/sufia/permissions/user_controls.es6
@@ -60,7 +60,7 @@ export class UserControls {
   }
 
   selectedUserIsDepositor() {
-    return this.userName() == this.depositor
+    return this.userName() === this.depositor
   }
 
   userValid() {
@@ -68,11 +68,11 @@ export class UserControls {
   }
 
   userNameValid() {
-    return this.userName() != ""
+    return this.userName() !== ""
   }
 
   permissionValid() {
-    return this.selectedPermission().index() != 0
+    return this.selectedPermission().index() !== 0
   }
 
   selectedPermission() {
diff --git a/app/assets/javascripts/sufia/relationships/table.es6 b/app/assets/javascripts/sufia/relationships/table.es6
index d95e3510cb..61c73334f7 100644
--- a/app/assets/javascripts/sufia/relationships/table.es6
+++ b/app/assets/javascripts/sufia/relationships/table.es6
@@ -34,7 +34,7 @@ export default class RelationshipsTable {
 
       // Display an error when the input field is empty, or if the work ID is already related,
       // otherwise clone the row and set appropriate styles
-      if ($input.val() == "") {
+      if ($input.val() === "") {
         $this.setWarningMessage($row, "ID cannot be empty.");
       } else if ($.inArray($input.val(), $this.existing_related_works_values) > -1) {
         $this.setWarningMessage($row, "Work is already related.");
@@ -104,7 +104,7 @@ export default class RelationshipsTable {
 
       // ENTER key was pressed, wait for keyup to click the Add button
       if (key_code === 13) {
-        if (event.type == "keyup") {
+        if (event.type === "keyup") {
           $this.clickAddbutton($row);
         }
         event.preventDefault();
@@ -112,7 +112,7 @@ export default class RelationshipsTable {
       }
 
       // ESC key was pressed, clear the input field and hide the error
-      if (key_code === 27 && event.type == "keyup") {
+      if (key_code === 27 && event.type === "keyup") {
         $(this).val("");
         $this.hideWarningMessage($row);
       }
diff --git a/app/assets/javascripts/sufia/save_work/required_fields.es6 b/app/assets/javascripts/sufia/save_work/required_fields.es6
index 9b2c80e99e..9bcd8a2f7b 100644
--- a/app/assets/javascripts/sufia/save_work/required_fields.es6
+++ b/app/assets/javascripts/sufia/save_work/required_fields.es6
@@ -7,7 +7,7 @@ export class RequiredFields {
   }
 
   get areComplete() {
-    return this.requiredFields.filter((n, elem) => { return this.isValuePresent(elem) } ).length == 0
+    return this.requiredFields.filter((n, elem) => { return this.isValuePresent(elem) } ).length === 0
   }
 
   isValuePresent(elem) {
diff --git a/app/assets/javascripts/sufia/save_work/save_work_control.es6 b/app/assets/javascripts/sufia/save_work/save_work_control.es6
index ab66044392..2a8f8daec7 100644
--- a/app/assets/javascripts/sufia/save_work/save_work_control.es6
+++ b/app/assets/javascripts/sufia/save_work/save_work_control.es6
@@ -21,7 +21,7 @@ export default class SaveWorkControl {
    * @param {AdminSetWidget} adminSetWidget the control for the adminSet dropdown
    */
   constructor(element, adminSetWidget) {
-    if (element.size() == 0) {
+    if (element.length < 1) {
       return
     }
     this.element = element