Okay, now, the script converts the objects, too.
https://github.com/haroldo-ok/pocket-platformer-exporter/blob/529af051a304447580...
OK, now the script has been refactored into a command line tool/library:
https://www.npmjs.com/package/pocket-platformer-exporter
The probable next step would be to implement a web interface to use this tool withou installing anything; afterwards, maybe the prototyping of the SMS converter could start.