How to Access Guides or Slices via Script in Photoshop?

Slices examples here:

// 2025, use at your own risk; 
if (app.documents.length > 0 && app.activeDocument.guides.length > 0) {
var theGuides = getGuidesSquare();
alert ("\nvertical guides\n"+theGuides[0].join("\n")+"\n\nhorizontal guides\n"+theGuides[1].join("\n"))
};
////// get guides //////
function getGuidesSquare () {
// set to pixels;
var myDocument = app.activeDocument;
var originalRulerUnits = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS;
// collect guides;
var theVerticalArray = new Array;
var theHorizontalArray = new Array;
for (var m = 0; m < myDocument.guides.length; m++) {
if (myDocument.guides[m].direction == Direction.HORIZONTAL) {theHorizontalArray.push(Number(myDocument.guides[m].coordinate))}
else {theVerticalArray.push(Number(myDocument.guides[m].coordinate))}
};
theHorizontalArray.sort(sortByDate);
theVerticalArray.sort(sortByDate);
app.preferences.rulerUnits = originalRulerUnits;
return [theVerticalArray, theHorizontalArray];
function sortByDate(a,b) {
if (Number(a)<Number(b)) return -1;
if (Number(a)>Number(b)) return 1;
return 0;
};
};