Webpack 网页包找不到入口点

我开始尝试使用webpack

下面是Sitepoint发布的教程：

我正在使用下面的package.json

{
  "name": "project-stub",
  "version": "0.1.0",
  "description": "",
  "main": "./src/js/main.js",
  "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
       "dev": "webpack --mode development",
      "build": "webpack --mode production"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "webpack": "^4.41.5",
    "webpack-cli": "^3.3.10"
  }
}

当我运行build或dev时，错误消息表明找不到“main.js”。 无论我将main.js放在项目根目录、src目录或js目录中，这都是正确的。无论我如何编辑这个配置的“main”元素，它都是正确的

典型错误如下所示：

 project-stub@0.1.0 build /home/bob/play/learning-react-2
> webpack --mode production


Insufficient number of arguments or no entry found.
Alternatively, run 'webpack(-cli) --help' for usage info.

Hash: 43455f82066e07e4ac75
Version: webpack 4.41.5
Time: 40ms
Built at: 2019-12-28 16:19:32

ERROR in Entry module not found: Error: Can't resolve './src' in '/home/bob/play/learning-react-2'
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! project-stub@0.1.0 build: `webpack --mode production`
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the project-stub@0.1.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/bob/.npm/_logs/2019-12-28T03_19_32_117Z-debug.log

---

如何告诉webpack我的源文件在哪里？

您可以通过在根目录中创建

webpack.config.js

并将此代码添加到其中来告诉webpack您的源文件在哪里

module.exports={
条目：“./src/js”
};

您可以阅读有关配置的更多信息