fixing blacklist

lib/utils.js

@@ -9,12 +9,9 @@ function inDevMode(){
 }
 
 function isOneOf(word, arr) {
-    if (arr == null || arr.length === 0) {
-        return false;
-    }
-    const expression = String.raw`\b(${arr.join('|')})\b`;
-    const blacklist = new RegExp(expression, 'ig');
-    return blacklist.test(word);
+    if (!arr || arr.length === 0 || word == null) return false;
+    const lowerWord = word.toLowerCase();
+    return arr.some(item => lowerWord.indexOf(item.toLowerCase()) !== -1);
 }
 
 function nullOrEmpty(val) {