Fixed

- close() / quit()

Added functionality
- setlayervisibility()

Made SaveOptions into an enum for better readibility

scripts/lib.js

@@ -0,0 +1,34 @@
+// Opens and returns a file, overwriting new data.
+function newFile(path) {
+	var f = File(path)
+	if(f.exists)
+	    f.remove()
+	f.encoding = "UTF8"
+	f.open("e", "TEXT", "????")
+	return f
+}
+
+// Returns an array of ArtLayers from a layerSet or an ArtLayer.
+function getLayers(path) {
+    try {
+        var doc = app.activeDocument
+        var path = path.split('/')
+        var lyrs = doc.layerSets.getByName(path[0])
+        for (var i = 1; i < path.length; i++) {
+            try {
+                lyrs = lyrs.layerSets.getByName(path[i])
+            } catch (e) {
+                lyrs = { layers: [lyrs.layers.getByName(path[i])] } }
+        }
+        return lyrs
+    } catch (e) {
+        if (e.message.indexOf('User') == -1)
+            alert(err(e));
+        else
+            throw new Exception('User cancelled the operation');
+    }
+}
+
+function err(e) {
+    return 'ERROR: ' + e.message + ' at ' + e.fileName + ':' + e.line;
+}