Nice

[sambacha]

nice work ser, here is some alt. implementation for your reference

https://github.com/manifoldfinance/bundle-simulator/tree/feat-blockreplay/block-replay
https://github.com/bernard-wagner/hardhat-stream-blocks/

There is also this:
https://github.com/sebasgoldberg/hardhat-events-cache
https://github.com/sebasgoldberg/hardhat-mongodb

I am wondering now if I can backfill a cache and have it accessed by hardhat, wdyt?

cheers mate, will be checking this out!

[zemse]

hey man, thanks for checking!

Even im wondering how would the node state be saved and later resume there (e.g. if the node has to be restarted for some reason). Maybe that involves hacking with the ForkStateManager.

Otherwise I don't see a way to do that through a simple plugin, maybe with dumpState and loadState similar to anvil could be help but mainfork would contain a lot of state.