forge inspect <contract> errors/events

[ultrasecreth]

Component

Forge

Describe the feature you would like

When working with custom errors, sometimes for whatever reason the chain will spit out the raw bytes instead of the parsed error.
In those cases, it'd be very useful to be able to list the bytes4 sig of all the errors a contract may throw so then I can parse the raw bytes with cast.
I think that for completeness, I'd do the same for events, which would be useful when sometimes, even if the contract is verified, etherscan shows the raw byes.

Thanks!

Additional context

No response

[PaulRBerg]

+1

sometimes for whatever reason

One reason is this bug in the invariants: #4178

[PaulRBerg]

In the meantime, you can use cast sig to calculate the 4-byte selector for any function or custom error.

$ cast sig "transfer(address,uint256)"
# Outputs 0xa9059cbb

$ cast sig "Unauthorized(address)"
# Outputs 0x8e4a23d6

[ultrasecreth]

In the meantime, you can use cast sig to calculate the 4-byte selector for any function or custom error.

$ cast sig "transfer(address,uint256)"
# Outputs 0xa9059cbb

$ cast sig "Unauthorized(address)"
# Outputs 0x8e4a23d6

Yeah, I know, but have to manually do it for all the errors in my contract, which is not hard, but's annoying af

[grandizzy]

think this can be closed, forge inspect errors is available in latest versions

[PaulRBerg]

That's amazing, thanks for the heads-up @grandizzy!

[KholdStare]

@grandizzy That's awesome - could you link to the PR for the feature? This should also solve this: #3656 . Thank you.

[grandizzy]

@grandizzy That's awesome - could you link to the PR for the feature? This should also solve this: #3656 . Thank you.

here it is #5228

[grandizzy]

@mattsse this one can be closed