Catching reading exception

[morgan-wild]

Thank you for your work!

You implemented the read loop, that is very helpful.

But in this loop, you catched the case the device is disconnected:

    catch (error) {
        console.error("Read Loop error. Have the serial device been disconnected ? ");
    }

So there is no way to us to know when this case happends. My proposal is to let an exception comes up or make a callback.

For example:

    catch (error) {
        throw 'Unable to read data from the device';
    }