Cannot declare class Amp\Socket\EncryptableSocket, because the name is already in use

[issidorov]

Error:

In polyfill.php line 40:
Cannot declare class Amp\Socket\EncryptableSocket, because the name is already in use  

Code on line 40:

class_alias(ResourceSocket::class, EncryptableSocket::class);

Why used alias class on interface?
ResourceSocket -- is class
EncryptableSocket -- is interface

Need use checking interface_exists(EncryptableSocket::class)?

[danog]

That was a bit of a premature update for changes introduced in the latest version of https://github.com/amphp/socket/