sendClose hangs for 10 seconds before fulfilling

[taylor1791]

While using node-volapi I noticed that it takes a while for the node process to terminate. I tracked it down to the following lines in sendClose. It appears that the timer from deadline is still in node's task queue.

      const send = promisify(this.eio.send.bind(this.eio));
      await Promise.race([
        deadline(10 * 1000),
        send(call, null)
      ]);

While playing around, I replaced those lines with these and it appeared to fix it. I didn't make an MR since this appears to be a pretty common error throughout and I don't know how you want your abstractions.

      await new Promise((resolve, reject) => {
        const timeout = setTimeout(() => {
          done(new VolaError("Disconnect timeout"), null);
        }, 10 * 1000);

        this.eio.send(call, null, done);

        function done(err, data) {
          clearTimeout(timeout);

          if (err) return reject(err);
          resolve(data);
        }
      });