Basic example fails: "The "composer.json" directory does not exist."

[MichalKrakow]

Laravel version 5.5.42
Zipper::make('test.zip')->folder('test')->add('composer.json');

InvalidArgumentException
The "composer.json" directory does not exist.

[deepak-netwin]

$files = glob(public_path('js/*'));
 \Zipper::make(public_path('test.zip'))->add($files)->close();
 return response()->download(public_path('test.zip'));