Update index.js
Update index.js

U is not equal Ъ. Just leave empty string for ъ and ь.
mhasan3/speakingurl,pid/speakingurl,OlegDokuka/speakingurl,OlegDokuka/speakingurl,npmcomponent/pid-speakingurl,mhasan3/speakingurl,pid/speakingurl,OlegDokuka/speakingurl