module Bootsnap

def self.default_setup
  env = ENV['RAILS_ENV'] || ENV['RACK_ENV'] || ENV['ENV']
  development_mode = ['', nil, 'development'].include?(env)
  unless ENV['DISABLE_BOOTSNAP']
    cache_dir = ENV['BOOTSNAP_CACHE_DIR']
    unless cache_dir
      config_dir_frame = caller.detect do |line|
        line.include?('/config/')
      end
      unless config_dir_frame
        $stderr.puts("[bootsnap/setup] couldn't infer cache directory! Either:")
        $stderr.puts("[bootsnap/setup]   1. require bootsnap/setup from your application's config directory; or")
        $stderr.puts("[bootsnap/setup]   2. Define the environment variable BOOTSNAP_CACHE_DIR")
        raise("couldn't infer bootsnap cache directory")
      end
      path = config_dir_frame.split(/:\d+:/).first
      path = File.dirname(path) until File.basename(path) == 'config'
      app_root = File.dirname(path)
      cache_dir = File.join(app_root, 'tmp', 'cache')
    end
    setup(
      cache_dir:            cache_dir,
      development_mode:     development_mode,
      load_path_cache:      !ENV['DISABLE_BOOTSNAP_LOAD_PATH_CACHE'],
      compile_cache_iseq:   !ENV['DISABLE_BOOTSNAP_COMPILE_CACHE'] && iseq_cache_supported?,
      compile_cache_yaml:   !ENV['DISABLE_BOOTSNAP_COMPILE_CACHE'],
    )
    if ENV['BOOTSNAP_LOG']
      log!
    end
  end
end