webpack.bench.js

const merge = require("webpack-merge")
const common = require("./webpack.common.js")
const BundleAnalyzerPlugin = require("webpack-bundle-analyzer")
  .BundleAnalyzerPlugin

module.exports = (env) => {
  const config = merge(common, {
    mode: "production",
    entry: {
      benchmarks: "./__benchmarks__/benchmarks.js",
    },
    plugins: env && env.analyze ? [new BundleAnalyzerPlugin()] : [],
  })

  delete config.entry.app

  return config
}