Node.js 在 npm 启动时找不到模块错误

Question

I am getting an error like the below when I run npm start command to start the server for my first react project. I have tried uninstalling and reinstalling the node.js but did not work. How can I resolve this issue? I am including my package.json and my directory structure over here.

This is the error:

    > reactproject1@1.0.0 start C:\Users\LENOVO\reactproject1
    > node index.js
    
    internal/modules/cjs/loader.js:969
      throw err;
      ^
    
    Error: Cannot find module 'C:\Users\LENOVO\reactproject1\index.js'
        at Function.Module._resolveFilename (internal/modules/cjs/loader.js:966:15)
        at Function.Module._load (internal/modules/cjs/loader.js:842:27)
        at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
        at internal/main/run_main_module.js:17:47 {
      code: 'MODULE_NOT_FOUND',
      requireStack: []
    }
    npm ERR! code ELIFECYCLE
    npm ERR! errno 1
    npm ERR! reactproject1@1.0.0 start: `node index.js`
    npm ERR! Exit status 1
    npm ERR!
    npm ERR! Failed at the reactproject1@1.0.0 start 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!     C:\Users\LENOVO\AppData\Roaming\npm-cache\_logs\2020-07-18T09_12_04_972Z-debug.log
    
    
    

This is my package.json file of my react project. I have edited it by adding "start":"node index.js" .

{
  "name": "reactproject1",
  "version": "1.0.0",
  "description": "restropart",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node index.js"
  },

  "author": "",
  "license": "ISC",
  "dependencies": {
    "react": "^16.13.1",
    "react-dom": "^16.13.1"
  }
}

My Directory tree is as follows

-ReactProject
  -node_modules
  -public
  -src
    ->index.js
  -package.json
  -package-lock.json

My index.js file resides inside the src folder. The node_modules , public , src , package.json and package-lock.json files are on the same line.

Answer 1

The start script refers to index.js , but you don't have such a file - it's under src/index.js . You could either move it to the project root, or update the start script accordingly:

"scripts": {
    "start": "node src/index.js"
},