Webpack：./src/index.tsx中的错误找不到模块：错误：无法在“…”中解析“ ./App”

Question

I have the following error when trying to serve my app using webpack-dev-server:

ERROR in ./src/index.tsx
Module not found: Error: Can't resolve './App' in 
'C:\Users\user\Desktop\react-resources-boilerplate\src'
 @ ./src/index.tsx 15:28-44
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./src/index.tsx

Here is my webpack config file:

const HtmlWebPackPlugin = require('html-webpack-plugin');
const path = require('path');

module.exports = {
  entry: path.resolve(__dirname, 'src', 'index.tsx'),
  module: {
    rules: [
      {
        test: /\.ts|\.tsx$/,
        loader: "ts-loader",
      },
    ]
  },

  plugins: [
    new HtmlWebPackPlugin({
      template: "./src/index.html",
      filename: "./index.html"
    })
  ]
};

Here is my tsconfig file:

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "jsx": "react",
    "sourceMap": true,
    "outDir": "./dist",
    "rootDir": "./src",
    "strict": true,
    "noImplicitAny": true,
    "esModuleInterop": true
  }
}

Here is my index.tsx file:

import * as React from 'react';
import { render } from 'react-dom';
import App from './App';

const root = document.querySelector('#root')
render(<App />, root)

Help appreciated Thanks

Answer 1

Add the following to your webpack config:

module.exports = {
    // ...
    // existing code goes here
    // ...

    resolve: {
        extensions: ['.ts', '.tsx'],
    },
};

More info in the docs .