Use our own interface

[samdark]

Currently the wrapper makes little sense because underlying implementation can not be replaced:

1. Interface depends on interface FilesystemOperator from flysystem package: FilesystemInterface extends FilesystemOperator. Solution: do not inherit anything from flysystem package.
2. It returns DirectoryListing that is specific to FlySystem: https://github.com/yiisoft/yii-filesystem/blob/master/src/Filesystem.php#L108. Solution: wrap it.

[samdark]

Make yii-filesystem interface independent of flysystem

[demonking]

Should the functions be similar to flysystem ?

[samdark]

Yes. It should be used as a "driver".