我正在尝试基于http://electron.atom.io/docs/tutorial/quick-start/的说明创建一个简单的基于电子的应用程序，它提供下面的代码 . 当我尝试用电子1.4.4和NodeJS 6.7.0运行它时，我得到：
TypeError: Cannot read property 'on' of undefined
at Object.<anonymous> (/path/to/proj/src/goelectron.js:29:4)
代码如下：
const {app, BrowserWindow} = require('electron')
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let win
function createWindow () {
// Create the browser window.
win = new BrowserWindow({width: 800, height: 600})
// and load the index.html of the app.
win.loadURL(`file://${__dirname}/index.html`)
// Open the DevTools.
win.webContents.openDevTools()
// Emitted when the window is closed.
win.on('closed', () => {
// Dereference the window object, usually you would store windows
// in an array if your app supports multi windows, this is the time
// when you should delete the corresponding element.
win = null
})
}
// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)
// Quit when all windows are closed.
app.on('window-all-closed', () => {
// On macOS it is common for applications and their menu bar
// to stay active until the user quits explicitly with Cmd + Q
if (process.platform !== 'darwin') {
app.quit()
}
})
app.on('activate', () => {
// On macOS it's common to re-create a window in the app when the
// dock icon is clicked and there are no other windows open.
if (win === null) {
createWindow()
}
})
// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.
这表明'app'未定义，但我不熟悉提供的符号 const {app, BrowserWindow} = require('electron') ，所以我不确定如何检查出错了什么？
1 回答
事实证明这是打算用'电子'命令运行，所以因为我没有全局安装它（假设我在我的项目目录中）：
否则，如果我有，那将是：