instance method pin

# File lib/importmap/commands.rb, line 16
  def pin(*packages)
    if imports = packager.import(*packages, env: options[:env], from: options[:from])
      imports.each do |package, url|
        if options[:download]
          puts %(Pinning "#{package}" to #{packager.vendor_path}/#{package}.js via download from #{url})
          packager.download(package, url)
          pin = packager.vendored_pin_for(package, url)
        else
          puts %(Pinning "#{package}" to #{url})
          pin = packager.pin_for(package, url)
        end

        if packager.packaged?(package)
          gsub_file("config/importmap.rb", /^pin "#{package}".*$/, pin, verbose: false)
        else
          append_to_file("config/importmap.rb", "#{pin}\n", verbose: false)
        end
      end
    else
      puts "Couldn't find any packages in #{packages.inspect} on #{options[:from]}"
    end
  end