運行“ npm start”時出錯？

Question

我今天從電子開始，然后按照指南創建一個簡單的應用程序瀏覽器窗口，並在命令窗口中運行了npm start，輸入后它顯示了很多錯誤，我在下面發布了信息和代碼。

控制台錯誤：

C:\Users\Administrator\Desktop\electron>npm start

> breef@1.0.0 start C:\Users\Administrator\Desktop\electron
> node index.js

module.js:471
    throw err;
    ^

Error: Cannot find module 'app'
    at Function.Module._resolveFilename (module.js:469:15)
    at Function.Module._load (module.js:417:25)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (C:\Users\Administrator\Desktop\electron\index.js:1:73)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)

npm ERR! Windows_NT 10.0.14393
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
npm ERR! node v6.9.2
npm ERR! npm  v3.10.9
npm ERR! code ELIFECYCLE
npm ERR! breef@1.0.0 start: `node index.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the breef@1.0.0 start script 'node index.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the breef package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node index.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs breef
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls breef
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     C:\Users\Administrator\Desktop\electron\npm-debug.log

這是我的package.json：

{
  "name": "breef",
  "version": "1.0.0",
  "description": "A simple chat application.",
  "main": "index.js",
  "dependencies": {
    "electron": "^1.4.12"
  },
  "devDependencies": {},
  "scripts": {
    "test": "breeftestcmd",
    "start": "node index.js"
  },
  "keywords": [
    "breef"
  ],
  "author": "Sage & Sh4wn",
  "license": "ISC"
}

這是我的index.js：

var app = require("app")
var browserWindow = require("browser-window")

app.on('ready', function() {
    var mainWindow = new browserWindow({
        width: 800,
        height: 600
    })

    mainWindow.loadUrl('http://google.com');
})

Answer 1

如果app是模塊，則package.json中缺少該模塊。 如果沒有，您應該使用一條路徑來要求它

var app = require('./app');

Answer 2

自從Electron v1.0.0起，導入的電子模塊的導入方式已更改，因此您遵循的指南已過時。 這是正確的方法：

const {app, BrowserWindow} = require("electron")

您可能還會發現閱讀涉及該主題的上一個問題很有幫助： Node.js中要求的正確方法是什么？