ERC20 Deposit/Withdraw - viem/op-stack

[danielsimao]

By looking at the docs and some of the source code, I could not find anything related to depositing or withdrawing ERC20 on viem/op-stack. I know there is this functionality in op-viem from base-org. Could someone clarify me if I'm missing something or if this feature is yet to come?

Thank you so much in advance.

[danielsimao]

With this feature would be good to also have a fee estimate for bridging erc20.

[gndelia]

If you need an example, you can use the following implementation

Using the Portal contract did not work, at least with the old version of OP. So I had to use a custom implementation for depositing and initiating withdrawals for ERC20, using the L1StandardBridge, and the L2Bridge. In case anyone needs it, here is the deposit and the withdrawal.

We may eventually move this into a publishable package