Is the documentation for estimateGas correct?

[fun-pawin]

Here is the description of the return value of estimateGas. It says that the return value is the gas estimate in wei. (Source code)

However, Viem's estimateGas returns the number of gas units, not wei.

Also, Wagmi's estimateGas actually returns the same value as Viem's estimateGas. I need to multiply it with maxFeePerGas to get the correct value in wei.

I would like to think that the documentation is wrong here, but I'm not sure if I misunderstand something.