我有一个文件index.ts：
import { app, BrowserWindow } from 'electron'
let win
app.on('ready', () => {
win = new BrowserWindow({
minHeight: 640,
minWidth: 480,
frame:false
})
win.loadFile('index.html')
})
如果我尝试使用：运行npm start，则会出现错误：
import { app, BrowserWindow } from 'electron'
^^^^^^
SyntaxError: Cannot use import statement outside a module
at wrapSafe (internal/modules/cjs/loader.js:1051:16)
at Module._compile (internal/modules/cjs/loader.js:1101:27)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1166:10)
at Module.load (internal/modules/cjs/loader.js:981:32)
at Module._load (internal/modules/cjs/loader.js:881:14)
at Function.Module._load (electron/js2c/asar.js:769:28)
at loadApplicationPackage (D:\VS Projects\Electron App\node_modules\electron\dist\resources\default_app.asar\main.js:109:16)
at Object.<anonymous> (D:\VS Projects\Electron App\node_modules\electron\dist\resources\default_app.asar\main.js:155:9)
at Module._compile (internal/modules/cjs/loader.js:1145:30)
at …