remove unnecessary indexOf polyfills

1 files changed, 2 insertions, 2 deletions

diff --git a/app/assets/javascripts/new_branch_form.js b/app/assets/javascripts/new_branch_form.js
index c4733253af8..9d614cdee3a 100644
--- a/app/assets/javascripts/new_branch_form.js
+++ b/app/assets/javascripts/new_branch_form.js
@@ -1,7 +1,5 @@
 /* eslint-disable func-names, space-before-function-paren, no-var, one-var, prefer-rest-params, max-len, vars-on-top, wrap-iife, consistent-return, comma-dangle, one-var-declaration-per-line, quotes, no-return-assign, prefer-arrow-callback, prefer-template, no-shadow, no-else-return, max-len, object-shorthand */
 (function() {
-  var indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i += 1) { if (i in this && this[i] === item) return i; } return -1; };
-
   this.NewBranchForm = (function() {
     function NewBranchForm(form, availableRefs) {
       this.validate = this.validate.bind(this);
@@ -94,6 +92,8 @@
 
     NewBranchForm.prototype.validate = function() {
       var errorMessage, errors, formatter, unique, validator;
+      const indexOf = [].indexOf;
+
       this.branchNameError.empty();
       unique = function(values, value) {
         if (indexOf.call(values, value) === -1) {