Convert text into numpad of old cellphones.
import { textToPhoneSpeak, phoneSpeakToText } from 'celularspeak'
textToPhoneSpeak('hello world')
// "44.33.555.555.666.0.9.666.777.555.3"
phoneSpeakToText('44.33.555.555.666.0.9.666.777.555.3')
// "hello world"
npm test