Its a bit rough with SherpaOnnx and eSpeak - So PR's welcome.<p>Idea here is this is a unifed TTS wrapper so getVoices is the same for all engines, and bytestream is the same and word events are the same - even if they don't support it we estimate it.<p>Maybe useful since I see a lot of TTS hackers out there!<p>NB: I will say JS isnt my bag - so feedback all welcome.