Make hasQuickActions stateless

app/assets/javascripts/notes/stores/utils.js

@@ -2,7 +2,8 @@ import AjaxCache from '~/lib/utils/ajax_cache';
 import { trimFirstCharOfLineContent } from '~/diffs/store/utils';
 import { sprintf, __ } from '~/locale';
 
-const REGEX_QUICK_ACTIONS = /^\/\w+.*$/gm;
+// factory function because global flag makes RegExp stateful
+const createQuickActionsRegex = () => /^\/\w+.*$/gm;
 
 export const findNoteObjectById = (notes, id) => notes.filter(n => n.id === id)[0];
 
@@ -27,9 +28,9 @@ export const getQuickActionText = note => {
   return text;
 };
 
-export const hasQuickActions = note => REGEX_QUICK_ACTIONS.test(note);
+export const hasQuickActions = note => createQuickActionsRegex().test(note);
 
-export const stripQuickActions = note => note.replace(REGEX_QUICK_ACTIONS, '').trim();
+export const stripQuickActions = note => note.replace(createQuickActionsRegex(), '').trim();
 
 export const prepareDiffLines = diffLines =>
   diffLines.map(line => ({ ...trimFirstCharOfLineContent(line) }));