#!/usr/bin/env ruby APP_ROOT = File.expand_path('..', __dir__) Dir.chdir(APP_ROOT) do yarn = ENV['PATH'].split(File::PATH_SEPARATOR) .select { |dir| File.expand_path(dir) != __dir__ } .product(['yarn', 'yarn.cmd', 'yarn.ps1']) .map { |dir, file| File.expand_path(file, dir) } .find { |file| File.executable?(file) } if yarn exec yarn, *ARGV else warn 'Yarn executable was not detected in the system.' warn 'Download Yarn at https://yarnpkg.com/en/docs/install' exit 1 end end