GPS Recorder: invalid Date of Track

I made a converter that solves my problem at this moment.
Demo: https://zloid.github.io/convert-gps-recorder-raw-data-to-gpx/
Source: https://github.com/zloid/convert-gps-recorder-raw-data-to-gpx

Also, this tool will be useful for those who will have a similar problem and want to convert the routes files to GPX in an easy way.

This converter uses some of the code from https://github.com/espruino/BangleApps/blob/master/apps/gpsrec/interface.html

And here's what I noticed when I was making the tool: all the raw route files downloaded from the watch have one blank line at the end. If such a file gets into

trackLineToObject ("", false)

, then the output will be

{date: Invalid Date, lat: NaN, lon: NaN, alt: NaN}

Perhaps this is causing the error? When files with routes may contain empty lines.