text: var webpack = require('webpack');
  
  module.exports = {
      entry: "./app/js/index.tsx",
      output: {
          filename: "./app/js/app.js",
      },
  
      // Enable sourcemaps for debugging webpack's output.
      devtool: "source-map",
  
      resolve: {
          // Add '.ts' and '.tsx' as resolvable extensions.
          extensions: ["", ".webpack.js", ".web.js", ".ts", ".tsx", ".js"]
      },
  
      module: {
          loaders: [
              // All files with a '.ts' or '.tsx' extension will be handled by 'ts-loader'.
              { test: /\.tsx?$/, loader: "ts-loader" }
          ],
  
          preLoaders: [
              // All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
              { test: /\.js$/, loader: "source-map-loader" }
          ]
      },
  
      // When importing a module whose path matches one of the following, just
      // assume a corresponding global variable exists and use that instead.
      // This is important because it allows us to avoid bundling all of our
      // dependencies, which allows browsers to cache those libraries between builds.
      externals: {
          "react": "React",
          "react-dom": "ReactDOM"
      },
      plugins: [
          // 压缩混淆
          new webpack.optimize.UglifyJsPlugin({
           compress: {
               warnings:false
           }
          }),
      ],
      watch: true
  };