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#!/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
$stderr.puts "Yarn executable was not detected in the system."
$stderr.puts "Download Yarn at"
exit 1