解决方案

package.json

"scripts": {
    "startdev": "webpack serve --mode development --env development --hot --port 3000"
    ...
    ...
  },
"devDependencies": {
...
    "webpack": "^5.10.1",
    "webpack-cli": "^4.2.0"
 },

控制台

$ npm run startdev

当我只在本地安装webpack而没有在全局安装它时，我也会出现这个错误。

我已经在全球安装了webpack-dev-server，它依赖于webpack的全球安装。公平地说，npm在安装webpack-dev-server时确实抱怨过:

未满足对等依赖webpack@^2.2.0

解决方案

package.json

"scripts": {
    "startdev": "webpack serve --mode development --env development --hot --port 3000"
    ...
    ...
  },
"devDependencies": {
...
    "webpack": "^5.10.1",
    "webpack-cli": "^4.2.0"
 },

控制台

$ npm run startdev

我刚刚解出来了。

问题出在index.html的路径上。

来自:

<script src="./dist/myBundle.js"></script>

to:

<script src="myBundle.js"></script>

尝试将webpack版本从1更改。X到2。X在你的package.json:

Eg:

 "devDependencies": {
    "webpack": "2.2.0-rc.3",
    "webpack-dev-server": "2.1.0-beta.0",
    "webpack-validator": "^2.3.0"
  }

当你使用webpack-dev-server的预发布版本和webpack的发布版本时，有时会发生这种情况，反之亦然。

这是因为webpack-cli版本的变化。

如果webpack-cli版本号小于4。使用webpack-dev-server 如果webpack-cli版本号为4。X或更高，你可以使用webpack服务

3.执行命令webpack-cli。X及以下

    "scripts": {
      "dev-server": "webpack-dev-server"
    }

对于webpack-cli。X及以上

    "scripts": {
      "dev-server": "webpack serve"
    }

    "scripts": {
      "dev-server": "webpack serve "
    }

来源:webpack dev-server