New Playlist & Duplicate Playlist

This script will create a new playlist for selected tracks.
Read the comments to modify it to duplicate tracks

sf.ui.proTools.appActivateMainWindow();
sf.ui.proTools.mainWindow.invalidate();

// substitute "New..." with "Duplicate..." to duplicate track
const trackAction = "New..."

//Get selected Track Names
const originalSelectedTracks = sf.ui.proTools.selectedTrackNames;

//Select first track and make sure it is scrolled into view
sf.ui.proTools.trackSelectByName({
    names: [originalSelectedTracks[0]]
})

sf.ui.proTools.selectedTrack.trackScrollToView()

//Reselect originally selected tracks
sf.ui.proTools.trackSelectByName({ names: originalSelectedTracks })

//Duplicate or Create New Tracks depending on value of `trackAction`
sf.ui.proTools.selectedTrack.popupButtons.whoseTitle.is("Playlist selector").first.popupMenuSelect({
    isShift: true,
    isOption: true,
    menuPath: [trackAction]
})

//Delete everything below this line if you want to name the playlist
//otherwise the script will automatically click "OK" to close confirmation dialog


//If only one track is originally selected, wait for the confirmation dialog
sf.wait({ intervalMs: 300 })

const confDialog = sf.ui.proTools.confirmationDialog

//close conmf dialog
if (confDialog.exists && originalSelectedTracks.length == 1) {
    sf.ui.proTools.windows.first.buttons.whoseTitle.is("OK").first.elementClick()
}

Thanks for this!