say "Install Webpack with config"
copy_file "#{__dir__}/webpack.config.js", "webpack.config.js"
run "yarn add webpack webpack-cli"

say "Add build script"
build_script = "webpack --config webpack.config.js"

if (`npx -v`.to_f < 7.1 rescue "Missing")
  say %(Add "scripts": { "build": "#{build_script}" to your package.json), :green
else
  run %(npm set-script build "#{build_script}")
end