It’s weirdly satisfying debugging erc4337 issues. The process really tests your understanding of the EVM and I’ve learnt so much about it in the process

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How you debug? I use this console log from hardhat is there a better way?

It’s a bit harder when you can’t change contract source

Simulation/tracing tools like tenderly are very helpful

I also end up making extensive use of patching to console.log intermediate values in viem 😅

The foundry suite is also nice (anvil/cast)