How to use the clipboard.readText function in clipboard

var clipboard = require('clipboard')
process.stdout.write(clipboard.readText() + '\n')

window.close()

// var clipboard = require('clipboard')

// var image = clipboard.readImage()
// var buffer = image.toPng()
// process.stdout.write(buffer)

// // close window
// window.close()

var ret = globalShortcut.register(process.platform === 'win32' ? 'ctrl+g' : 'cmd+g', function() {
    console.log('cmd+g/ctrl+g is pressed');
    console.log(clipboard.readText('selection'));
    var url = clipboard.readText('selection');
    mainWindow.webContents.executeJavaScript("addNewURL('"+url+"');");
  });

var ret = globalShortcut.register(process.platform === 'win32' ? 'ctrl+g' : 'cmd+g', function() {
    console.log('cmd+g/ctrl+g is pressed');
    console.log(clipboard.readText('selection'));
    var url = clipboard.readText('selection');
    mainWindow.webContents.executeJavaScript("addNewURL('"+url+"');");
  });

click: function () {
      ipc.emit('add-to-playlist', clipboard.readText().split('\n'))
    }
  }))

function paste() {
    $scope.token = clipboard.readText();
  };

paste: waitEditorReady.and(function() {
        var text = clipboard.readText();
        editor.insert(text);
    }),
    selectAll: waitEditorReady.and(function() {

click: function() {
					pcman.conn.convSend(clipboard.readText());
				}
			},