zoro-cli/lib/plugins/config-webpack/template/script/util/inspectWebpackConfig.js

https://github.com/vuejs/vue-cli

module.exports = function inspectWebpackConfig(config) {
  console.log(
    JSON.stringify(
      config,
      (key, value) => {
        if (value instanceof RegExp) {
          return value.toString()
        }
        return value
      },
      2
    )
  )
}