載入 TypeScript 檔案

要在 webpack 中使用 typescript，你需要安裝 typescript 和 ts-loader

npm --save-dev install typescript ts-loader

現在你可以配置 webpack 以使用 typescript 檔案

// webpack.config.js

module.exports = {
  ..
  resolve: {
    // .js is required for react imports.
    // .tsx is required for react tsx files.
    // .ts is optional, in case you will be importing any regular ts files.
    extensions: ['.js', '.ts', '.tsx']
  },
  module: {
    rules: [
      {
        // Set up ts-loader for .ts/.tsx files and exclude any imports from node_modules.
        test: /\.tsx?$/,
        loaders: isProduction ? ['ts-loader'] : ['react-hot-loader', 'ts-loader'],
        exclude: /node_modules/
      }
    ]
  },
  ...
};