Exporting Visible layers in photoshop 2020

Ok, i fix it :

This script export only visible layer

function exportPNG(){
  var documents = app.activeDocument;
  var docName = app.activeDocument.name;
  var docNameNoExt = app.activeDocument.name.split('.')[0];
  var docPath = app.activeDocument.path.fsName;
  var pngSrvOutput = new Folder("\\\\server_network\\production\\")
  if (!pngSrvOutput.exists){
    pngSrvOutput.create()
  }
  var isVisible = new Array();
  //Show each layer each time and save a snapshot
  for (var i = 0; i < documents.layers.length; i++) {
    isVisible[i] = documents.layers[i].visible == true;
    }
  for (var i = 0; i < documents.layers.length; i++){
    //Hide all the layers
    for (var j = 0; j < documents.layers.length; j++) {
      documents.layers[j].visible = false;
    }
    // show layer
    if (isVisible[i]){
      var layerIndex = i;
      documents.layers[layerIndex].visible = true;
      var layerName = documents.layers[layerIndex].name;    // save
      var file = new File(pngSrvOutput + "\\" + docNameNoExt + "_" + layerName + "-1.png");
      var saveOptions = new PNGSaveOptions();
      documents.saveAs(file, saveOptions, true, Extension.LOWERCASE);
    }
  }
  for (var i = 0; i < documents.layers.length; i++){
    documents.layers[i].visible = isVisible[i]
  }
}
exportPNG()