Javascript Autocomplete (cleanup)

app/javascript/src/classes/autocomplete.js

@@ -1,77 +1,58 @@
-var $, Autocomplete, autocompleterMap;
-
 import autocompleter from 'autocompleter';
-
-import TagCompletion from './tag_completion';
-
 import TagCompletionBox from './tag_completion_box';
 
-$ = jQuery;
+const $ = window.jQuery;
 
-autocompleterMap = (match) => {
+function autocompleterMap (match) {
   return {
     label: match,
     value: match
   };
-};
+}
 
-export default Autocomplete = class Autocomplete {
+export default class Autocomplete {
   constructor (tagCompletionInstance) {
-    this._genericCompletion = this._genericCompletion.bind(this);
-    this._genericCompletionAll = this._genericCompletionAll.bind(this);
-    this._tagCompletion = this._tagCompletion.bind(this);
     this.tagCompletionInstance = tagCompletionInstance;
     $(() => {
-      this._genericCompletionAll();
-      return this._tagCompletion();
+      this.genericCompletionAll();
+      this.tagCompletion();
     });
   }
 
-  _genericCompletion(input) {
-    var url;
-    url = input.dataset.autocomplete;
-    return autocompleter({
-      input: input,
+  genericCompletion (input) {
+    const url = input.dataset.autocomplete;
+
+    autocompleter({
+      input,
       fetch: (text, update) => {
-        return $.ajax(url, {
-          data: {
-            term: text
-          },
+        $.ajax(url, {
+          data: { term: text },
           dataType: 'json'
         }).done((matches) => {
-          return update(matches.map(autocompleterMap));
+          update(matches.map(autocompleterMap));
         });
       },
       onSelect: (match) => {
-        return input.value = match.value;
+        input.value = match.value;
       },
       preventSubmit: 2 // OnSelect
     });
   }
 
-  _genericCompletionAll() {
-    var i, input, len, ref, results;
-    ref = document.querySelectorAll('[data-autocomplete]');
-    results = [];
-    for (i = 0, len = ref.length; i < len; i++) {
-      input = ref[i];
-      results.push(this._genericCompletion(input));
+  genericCompletionAll () {
+    for (const input of document.querySelectorAll('[data-autocomplete]')) {
+      this.genericCompletion(input);
     }
-    return results;
   }
 
-  _tagCompletion() {
-    var editForm, tags;
-    editForm = document.querySelector('#edit-form');
-    if (editForm == null) {
-      return;
-    }
-    tags = document.querySelector('.ac-tags');
-    if (tags == null) {
-      return;
-    }
-    new TagCompletionBox(tags);
-    return this.tagCompletionInstance.observe_tag_changes_on_submit(editForm, tags);
-  }
+  tagCompletion () {
+    const editForm = document.querySelector('#edit-form');
+    if (editForm == null) return;
 
-};
+    const tags = document.querySelector('.ac-tags');
+    if (tags == null) return;
+
+    new TagCompletionBox(tags); // eslint-disable-line no-new
+    this.tagCompletionInstance.observe_tag_changes_on_submit(editForm, tags);
+  }
+}