Integrating TypeScript into an established project utilizing React, Webpack, and Babel

Currently, I am in the process of integrating Typescript into my existing React, Webpack, and Babel project. I aim to include support for file extensions such as [.js, .ts, .tsx] as part of my gradual transition to Typescript.

I have made some progress, but I am encountering difficulties resolving this specific error:

https://i.stack.imgur.com/fosZF.png

Furthermore, I am unsure whether it is necessary to retain Babel or if I can remove it once this setup is complete.

This is what my tsconfig.json currently looks like:

{
    "compilerOptions": {
        "target": "es5",
        "lib": ["es6", "dom", "esnext.asynciterable", "es2015"],
        "allowJs": true,
        "skipLibCheck": true,
        "esModuleInterop": true,
        "allowSyntheticDefaultImports": true,
        "strict": true,
        "forceConsistentCasingInFileNames": true,
        "module": "esnext",
        "moduleResolution": "node",
        "resolveJsonModule": true,
        "isolatedModules": true,
        // "noEmit": true,
        "strictNullChecks": true,
        // "noImplicitAny": false,
        "jsx": "preserve"
    },
    "include": ["src"],
    "exclude": ["node_modules", "build", "scripts", "jest"]
}

You can find my webpack.conf.js here: https://gist.github.com/Martinnord/981769791c3e5e3a261af459b81f2733

I would greatly appreciate any assistance as I am currently facing obstacles in this process.

Thank you!

javascripttypescriptwebpack

Answer №1

Example of webpack configuration in webpack.config.js:

module.exports = {
  entry: './src/index.js',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/dist/',
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: ['babel-loader'],
      },
      { test: /\.tsx?$/, loader: 'ts-loader' },
    ],
  },
  resolve: {
    extensions: ['*', '.js', '.jsx', '.ts', '.tsx'],
  },
  plugins: [new webpack.HotModuleReplacementPlugin()],
  devServer: {
    contentBase: path.resolve(__dirname, './dist'),
    hot: true,
  },
}

In addition, make sure to update the "jsx" setting in your tsconfig file:

{
  ...
  "jsx": "react",
  ...
}

For a more detailed guide on adding TypeScript to an existing webpack project, check out the full article here

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