offchainexample.ethpoints to so-called "offchain resolver" that fetches data from JSON configuration file hosted on google app engine. It will reply data to any record for offchainexample.eth and its subdomain record such as
2.offchainexample.eth. The example resolver is not using L2 data but the same mechanism works when the L2 resolver becomes ready.
@unstoppabledomains/resolutionremoved ENS support as of December 2021. Other services tend not to support all ENS TLDs especially DNS based TLDs (.com, .net, etc) so we advise not to rely on these libraries resolving ENS names.