Adobe Photoshop Generate image assets action

/*
All top level layers saved to PNG for Batch.jsx
v1.0 - 6th March 2024, Stephen Marsh
Based on:
https://community.adobe.com/t5/photoshop-ecosystem-discussions/how-do-i-export-layers-as-png-without-loosing-the-size-and-placement-of-the-particular-layer/m-p/12734226
Note: Existing files will be overwritten!
*/

#target photoshop

try {
    var outputPath = app.activeDocument.path.fsName;
} catch (e) {
    var outputPath = Folder.selectDialog("Unsaved base file, select the output folder:");
}

for (var i = 0; i < app.activeDocument.layers.length; i++) {
    for (var j = 0; j < app.activeDocument.layers.length; j++) {
        app.activeDocument.layers[j].visible = false;
    }
    var layerIndex = i;
    app.activeDocument.layers[layerIndex].visible = true;

    var layerName = app.activeDocument.layers[layerIndex].name.replace(/[^a-z0-9 _-]/gi, '').replace(/ +|-+|_+$/g, '');
    var filename = app.activeDocument.name.replace(/\.[^\.]+$/, '');
    var file = new File(outputPath + "/" + filename + "_" + layerName + ".png");

    var saveOptions = new PNGSaveOptions();
    saveOptions.compression = 0; // 0-9
    saveOptions.interlaced = false;
    app.activeDocument.saveAs(file, saveOptions, true, Extension.LOWERCASE);
}