Error codes are not exported anywhere

[mkermani144]

There are numerous error codes available in libp2p package, in packages/libp2p/src/errors.ts. Is there a reason these error code are not exported neither in the interface package, nor in the libp2p package itself?
Currently there is no way to check caught error type against these codes other than duplicating the needed ones inside codebases using libp2p.
I also know that these codes are going to be refactored to error names in the future, but it doesn't make any difference. When the refactor occurs, the names should be exported the same way.

[achingbrain]

@libp2p/interface exports ...Error types reused by other libp2p modules and services. These all have a static .name property that can be used to detect thrown errors.

Some modules define their own errors, for when they are too implementation-specific to include in @libp2p/interface but these should be exported by the relevant modules. Sometimes things are missed though, so if they are not and you spot ones that are not exported, please open a PR to export them.

[mkermani144]

@achingbrain
Yes, that seems to work. My main problem was about the code field in the previous version of libp2p, but having name property refactoring and considering the newly added error types, I think the issue is fixed now.
By the way, I will open a PR if I find missing exports for the errors in any package. Thanks!