const Tunnel = require('./lib/Tunnel'); module.exports = function localtunnel(arg1, arg2, arg3) { const options = typeof arg1 === 'object' ? arg1 : { ...arg2, port: arg1 }; const callback = typeof arg1 === 'object' ? arg2 : arg3; const client = new Tunnel(options); if (callback) { client.open(err => (err ? callback(err) : callback(null, client))); return client; } return new Promise((resolve, reject) => client.open(err => (err ? reject(err) : resolve(client))) ); };