Programmatically selecting the same number of tracks up or down from currently selected tracks?

Fun!!!!

/**
 * @param {object} obj
 * @param {'Down'|'Up'} obj.direction
 * @param {number} [obj.repetitions]
 */
function navigateTracks({ direction, repetitions = 1 }) {
    //Activate Pro Tools Main window
    sf.ui.proTools.appActivateMainWindow();
    //Invalidate the main window
    sf.ui.proTools.mainWindow.invalidate();

    //Get the visible track names
    let visibleTrackNames = sf.ui.proTools.visibleTrackNames;
    //Get the selected track names
    let selectedTrackNames = sf.ui.proTools.selectedTrackNames;
    //Get the selected track count
    let selectedTrackCount = sf.ui.proTools.selectedTrackCount;

    let trackIndexOffset = direction === "Down" ? selectedTrackCount : selectedTrackCount * -1;

    //Make a lookup table for the tracks with indexes indexes
    let trackLookup = visibleTrackNames.map((name, index) => ({ name, index, }));

    //Get the target track indexs
    let targetTrackIndexes = trackLookup.filter(track => selectedTrackNames.some(name => name === track.name))
        .map(track => track.index + (trackIndexOffset * repetitions));

    //Use the lookup table to get the target track names
    let targetTrackSet = targetTrackIndexes.map(index => trackLookup[index].name);

    //Select the target tracks
    sf.ui.proTools.trackSelectByName({ names: targetTrackSet });
}

navigateTracks({
    direction: "Down",
    //repetitions: 2
});

Updated :-)