         }
     }
     
-    
-    /// Open script file in an editor.
-    ///
-    /// - Parameter url: The URL of a script file to open.
-    /// - Throws: `ScriptFileError`
-    private func editScript(at url: URL) throws {
-        
-        guard NSWorkspace.shared.open(url) else {
-            throw ScriptFileError(kind: .open, url: url)
-        }
-    }
-    
-    
-    /// Reveal script file in Finder.
-    ///
-    /// - Parameter url: The URL of a script file to reveal.
-    /// - Throws: `ScriptFileError`
-    private func revealScript(at url: URL) throws {
-        
-        guard url.isReachable else {
-            throw ScriptFileError(kind: .existance, url: url)
-        }
-        
-        NSWorkspace.shared.activateFileViewerSelecting([url])
-    }
-    
 }

    
    // MARK: File Presenter Protocol
    
    var presentedItemOperationQueue: OperationQueue = .main
    
    
    /// URL to observe
    var presentedItemURL: URL? {
        
        return self.scriptsDirectoryURL
    }
    
    
    /// script folder did change

            }
        }
        
        self.presentedItemURL = self.scriptsDirectoryURL
        
        super.init()
        
        // observe script folder change
