Retrieving/passing command-line options from a plugin

import QtQuick 2.0
import MuseScore 3.0
import FileIO 3.0
 
MuseScore {
    menuPath: "Plugins.pluginName"
    description: "Description goes here"
    version: "1.0"
    requiresScore: false
    onRun: {
 
        var commandLine = Qt.application.arguments;
 
        var idx = commandLine.indexOf("-o");
 
        var dest = (idx >= 0) ? commandLine[idx + 1] : null;
 
        var res = {
            "timestamp": new Date(),
            "commandline": commandLine,
            "dest": dest
        };
        console.log(JSON.stringify(res));
 
        try {
            console.log("Writing to : " + logfile.source); 
            logfile.write(JSON.stringify(res));
        } catch (e) {
            console.log("Error while witing to log file : " + e.message);
        }
 
        if (dest !== null) {
            outfile.source = dest;
            try {
                console.log("Writing to : " + outfile.source);
                outfile.write(res.timestamp);
            } catch (e) {
                console.log("Error while witing to output file : " + e.message);
            }
        }
 
        Qt.quit()
    }
 
    FileIO {
        id: logfile
        source: tempPath() + "/test.dat" // = TEMP folder
    }
 
    FileIO {
        id: outfile
    }
}