webpack-enhanced-stats-plugin

Save Webpack stats extended with parsed and original source and size. This plugin is recommended to install when you use webpack-stats-explorer.

Each module in enhanced stats file has four additional fields analogous to source and size, but related to original source code and "parsed" code in the final bundle.

interface EnhancedModule extends Module {
  // may be null for built-in modules like webpack/bootstrap
  originalSource: string | null,
  originalSize: number | null,
  // may be null or empty for concatenated (inlined) modules
  parsedSource: string | null,
  parsedSize: number | null,
}

Installation

npm i -D webpack-enhanced-stats-plugin

Usage

In webpack.config.js:

const WebpackEnhancedStatsPlugin = require("webpack-enhanced-stats-plugin")

module.exports = {
  // set any source-map devtool (not none/false nor eval)
  devtool: 'source-map',
  module: {
    rules: [
      // other loaders here, this has to be the last one
      {
        test: [/\.json$/, /\.js$/, /\.jx$/, /\.ts$/, /\.tsx$/, /\.css$/, /\.scss$/],
        loader: WebpackEnhancedStatsPlugin.loader
      }
    ]
  },
  plugins: [
    // write out stats file to the output directory
    new WebpackEnhancedStatsPlugin({
      filename: 'stats.json'
    })
  ]
}

Known issues

The parsed size of modules importing .json files isn't calculated correctly when the babel-plugin-inline-json-import is used. It's because of the lack of source map support in the plugin. Native JSON support in Webpack 4 and higher is quite good, so the bundle shouldn't grow if you remove the plugin. Actually parsing should be much faster then because of the smart trick that Webpack uses.