Photoshop script - export specific layersets by name - photoshop

Question

I have layersets as here
I wish to merge visible layers (by copying) and export as png from each layerset.
So, I'd have 1.png, 2.png, 3.png, 4.png, and 5.png
I can access the layersets by name, but don't know how to save afterwards.
var layersetNames = ["1", "2", "3", "4", "5"];
for (n = 0; n < layersetNames.length; n++) {
var layersetName = layersetNames[n];
// get layerset by name
var layerset = app.activeDocument.layerSets.getByName(layersetName);
// copy & merge visible layers within this layerset
// save the merged layer as .png
}
// after done saving, delete all the merged layers as if nothing had happened.

Answer 1

If this is destructive, (ie you don't worry about the state the psd is afterwards) and you're just going through the layers, saving out a png each time, then you don't need to do the copy and merge. You do however, need to switch the layers visibility on and off:
var layersetNames = ["1", "2", "3", "4", "5"];
for (n = 0; n < layersetNames.length; n++)
{
var layersetName = layersetNames[n];
// get layerset by name
var layerset = app.activeDocument.layerSets.getByName(layersetName);
layerset.visible = true;
// save the merged layer as .png
png_it("C:\\temp\\" + layersetName + ".png"); // change this
layerset.visible = false;
}
function png_it(afilePath)
{
// app.activeDocument.mergeVisibleLayers();
// save as a png
var pngFile = new File(afilePath);
pngSaveOptions = new PNGSaveOptions();
pngSaveOptions.formatOptions = FormatOptions.STANDARDBASELINE;
pngSaveOptions.interlaced = false;
activeDocument.saveAs(pngFile, pngSaveOptions, false, Extension.LOWERCASE);
}