Fix type() method return type in Illuminate\Filesystem\Filesystem

[GNfsys]

The phpdoc might be outdated according to the current description of the function, which reports string|false.

Quoting:

Return Values ¶

Returns the type of the file. Possible values are fifo, char, dir, block, link, file, socket and unknown.

Returns false if an error occurs. filetype() will also produce an E_NOTICE message if the stat call fails or if the file type is unknown.

Errors/Exceptions ¶

Upon failure, an E_WARNING is emitted.

When executing this simple test i find that depending on the error_reporting level it can either generate an ErrorException: filetype(): Lstat failed for /dasdasadfasdbfbadfabd or false

test('type can return false', function () {
    $default = error_reporting();
    error_reporting(~E_ALL);

    $type = \Illuminate\Support\Facades\File::type('/dasdasadfasdbfbadfabd');
    expect($type)->toBeFalse();

    $type = \Illuminate\Support\Facades\File::type(base_path() . '/artisan');
    expect($type)->toBeString();

    error_reporting($default);
});