Typescript、React、Electron:不能在模块外使用 import 语句

时间:2021-01-17 15:07:52

标签: node.js reactjs typescript electron

我正在使用 node、react、electron 和 typescript 创建一个项目

我使用以下教程启动项目:https://flaviocopes.com/react-electron/#add-electron

更改了一些设置 TS 的内容:

  • npx create-react-app files --template typescript
  • npm install --save-dev ts-node
  • 更改了 package.json 中的脚本:"electron-start": "ts-node src/start-react.ts"

问题来了

  1. 我想使用 TS
  2. TS 必须使用 import/export,而不是 require
  3. package.json 必须使用 "type": "module" 才能导入/导出工作
  4. 导致此错误的原因:Unknown file extension ".ts"
  5. 因此,package.json 不得使用 "type": "module" 使 TS 正常工作
  6. 所以也许 tsconfig.json 应该使用 "module" : "CommonJS"
  7. 但 react 不断将模块改回 "module" : "esnext"

那么我该怎么做才能让 node 运行我的 typescript start-react.ts 文件

./package.json

{
  "name": "files",
  "version": "0.1.0",
  "private": true,
  "homepage": "./",
  "main": "src/start.ts",
  "dependencies": {
    "@testing-library/jest-dom": "^5.11.9",
    "@testing-library/react": "^11.2.3",
    "@testing-library/user-event": "^12.6.0",
    "@types/jest": "^26.0.20",
    "@types/node": "^12.19.14",
    "@types/react": "^16.14.2",
    "@types/react-dom": "^16.9.10",
    "electron": "^11.2.0",
    "react": "^17.0.1",
    "react-dom": "^17.0.1",
    "react-scripts": "4.0.1",
    "typescript": "^4.1.3",
    "web-vitals": "^0.2.4"
  },
  "scripts": {
    "start": "nf start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject",
    "electron": "electron .",
    "electron-start": "ts-node src/start-react.ts",
    "react-start": "react-scripts start",
    "pack": "build --dir",
    "dist": "npm run build && build",
    "postinstall": "install-app-deps"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "devDependencies": {
    "electron-builder": "^22.9.1",
    "ts-node": "^9.1.1"
  },
  "build": {
    "appId": "com.electron.electron-with-create-react-app",
    "win": {
      "iconUrl": "https://cdn2.iconfinder.com/data/icons/designer-skills/128/react-256.png"
    },
    "directories": {
      "buildResources": "public"
    }
  }
}

./tsconfig.json

{
  "compilerOptions": {
    "target": "ESNext",
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "allowJs": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "module": "esnext",
    "moduleResolution": "Node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "react-jsx"
  },
  "include": [
    "src"
  ]
}

./src/start-react.ts

import * as net from "net"
import * as childProcess from "child_process"

const port:any = process.env.PORT
process.env.ELECTRON_START_URL = `http://localhost:${port}`

const client = new net.Socket()

let startedElectron = false
const tryConnection = () =>
{
    client.connect({ port }, () =>
    {
        client.end()
        if (startedElectron) return

        startedElectron = true
        childProcess.exec("npm run electron")
    })
}

tryConnection()
client.on("error", () => setTimeout(tryConnection, 1000))

./src/start.ts

import { app, BrowserWindow } from "electron"

let mainWindow: BrowserWindow | null

function createWindow()
{
    mainWindow = new BrowserWindow(
    {
        width: 800,
        height: 800,
        webPreferences: 
        {
            nodeIntegration: true
        }
    })
    
    mainWindow.loadURL(<string>process.env.ELECTRON_START_URL)
    mainWindow.on("closed", () => mainWindow = null)
}

app.on("ready", createWindow)

app.on("window-all-closed", () => process.platform !== "darwin" ? app.quit : null)

app.on("activate", () => !mainWindow ? createWindow() : null)

附言如果您需要更多信息,请告诉我

2 个答案:

答案 0 :(得分:0)

尝试将 "esModuleInterop": true, 添加到 tsconfig.json

答案 1 :(得分:-1)

使用样板

我建议您在 Electron JS 的 React Boilerplate 中设置带有 official documentation 的应用程序。样板提供TypeScript 支持,并且在16.7 万 颗星上表现强劲。

此类样板可帮助您节省手动设置的时间和精力,并且高度可靠,因为它们采用了最佳做法。