Telega is a library based on telegram-bot-api for making Telegram bots fast and easily.
Documentation is avaliable on wiki
If you don't see something that you need (for example, file upload or process edited message) you can always access instance of telegram-bot-api:
bot.api.getMe().then(console.log);
To build write:
npm run build
Don't care about it, if you're just installing it from npm.