javascript - Enable logging in electron app for windows -

i using electron-quick-start app windows machine. have added logging statements in main.js follows:

const electron = require('electron') // module control application life. const app = electron.app // module create native browser window. const browserwindow = electron.browserwindow  // keep global reference of window object, if don't, window // closed automatically when javascript object garbage collected. let mainwindow  console.log("test");  function createwindow () {   // create browser window.   mainwindow = new browserwindow({width: 800, height: 600})    // , load index.html of app.   mainwindow.loadurl(`file://${__dirname}/index.html`)    // open devtools.   mainwindow.webcontents.opendevtools()    // emitted when window closed.   mainwindow.on('closed', function () {     // dereference window object, store windows     // in array if app supports multi windows, time     // when should delete corresponding element.     mainwindow = null   })   console.log("test"); }  // method called when electron has finished // initialization , ready create browser windows. // apis can used after event occurs. app.on('ready', createwindow)  // quit when windows closed. app.on('window-all-closed', function () {   // on os x common applications , menu bar   // stay active until user quits explicitly cmd + q   if (process.platform !== 'darwin') {     app.quit()   } })  app.on('activate', function () {   // on os x it's common re-create window in app when   // dock icon clicked , there no other windows open.   if (mainwindow === null) {     createwindow()   } })  // in file can include rest of app's specific main process // code. can put them in separate files , require them here. 

in package.json file have replaced line "start": "electron ." line "start": "electron . --enable-logging" here when call npm start.

where mistake? how can enable logging under windows?

set environment variable %electron_enable_logging%