[feat]: avoid rewrite

Author: DanielCech

Sources/ScriptToolkit/NSImageExtension.swift

@@ -62,8 +62,14 @@ public extension NSImage {
     ///  Saves the PNG representation of the current image to the HD.
     ///
     /// - parameter url: The location url to which to write the png file.
-    func savePNGRepresentationToURL(url: URL) throws {
+    func savePNGRepresentationToURL(url: URL, onlyChange: Bool) throws {
         if let png = self.PNGRepresentation {
+            if let originalData = try? Data(contentsOf: url) {
+                if onlyChange && (png == originalData) {
+                    return
+                }
+            }
+            
             try png.write(to: url, options: .atomicWrite)
         }
     }