npm 啟動時出現“webpack 編譯時出現 1 個錯誤”

Question

當我嘗試執行 npm start 時，我剛剛安裝了節點 js 並創建了一個反應應用程序，我在終端中得到了“webpack 編譯時出現 1 個錯誤”。

我真的沒有在應用程序中做任何單一的事情或更改。

這就是我的終端的樣子

PS D:\#D\Tech\Node js\React js\Projects\Project 1> npm -v
8.5.5
PS D:\#D\Tech\Node js\React js\Projects\Project 1> npm create-react-app project1
Unknown command: "create-react-app"

To see a list of supported npm commands, run:
  npm help
PS D:\#D\Tech\Node js\React js\Projects\Project 1> npx create-react-app project1

Creating a new React app in D:\#D\Tech\Node js\React js\Projects\Project 1\project1.

Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts with cra-template...


added 1376 packages in 3m

179 packages are looking for funding
  run `npm fund` for details

Initialized a git repository.

Installing template dependencies using npm...
npm WARN deprecated source-map-resolve@0.6.0: See https://github.com/lydell/source-map-resolve#deprecated

added 39 packages in 18s

179 packages are looking for funding
  run `npm fund` for details
Removing template package using npm...


removed 1 package, and audited 1415 packages in 10s

179 packages are looking for funding
  run `npm fund` for details

6 moderate severity vulnerabilities

To address all issues (including breaking changes), run:
  npm audit fix --force

Run `npm audit` for details.

Created git commit.

Success! Created project1 at D:\#D\Tech\Node js\React js\Projects\Project 1\project1
Inside that directory, you can run several commands:

  npm start
    Starts the development server.

  npm run build
    Bundles the app into static files for production.

  npm test
    Starts the test runner.

  npm run eject
    Removes this tool and copies build dependencies, configuration files
    and scripts into the app directory. If you do this, you can’t go back!

We suggest that you begin by typing:

  cd project1
  npm start

Happy hacking!
PS D:\#D\Tech\Node js\React js\Projects\Project 1> npm start
Failed to compile.

Module not found: Error: Can't resolve 'D:\#D\Tech\Node js\React js\Projects\Project 1\project1\node_modules\webpack-dev-server\client\index.js?protocol=ws%3A&hostname=0.0.0.0&port=3000&pathname=%2Fws&logging=none&reconnect=10' in 'D:\#D\Tech\Node js\React js\Projects\Project 1\project1'ERROR in Module not found: Error: Can't resolve 'D:\#D\Tech\Node js\React js\Projects\Project 1\project1\node_modules\webpack-dev-server\client\index.js?protocol=ws%3A&hostname=0.0.0.0&port=3000&pathname=%2Fws&logging=none&reconnect=10' in 'D:\#D\Tech\Node js\React js\Projects\Project 1\project1'

webpack compiled with 1 error

我的 package.json 是

{
  "name": "project1",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.16.4",
    "@testing-library/react": "^13.2.0",
    "@testing-library/user-event": "^13.5.0",
    "react": "^18.1.0",
    "react-dom": "^18.1.0",
    "react-scripts": "5.0.1",
    "web-vitals": "^2.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "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"
    ]
  }
}

請告訴我為什么會收到此錯誤以及如何解決此問題。

Answer 1

由於某種原因， react-scripts找不到webpack-dev-server 。 您可以嘗試刪除node_modules並再次運行npm install

Answer 2

我注意到父文件夾的名稱中有空格，即\Tech\Node js\React js\Projects\Project 1\project1 。 我只是刪除了空格並重命名了父文件夾，現在它看起來像這樣\Tech\Nodejs\Reactjs\Projects\Project1\project1並且它現在對我來說工作正常。