[Feature Request] Debugger/Hardhat

[Vorh]

Network

zkSync Era

Provide a brief description of the feature you would like to see implemented.

Hello!

At the moment any fail transaction cannot debug.
This makes it difficult to develop, support and create new products at ZkSync.

At the moment ZkSync not support standard dev tools (hardhat) which are used in the world to develop smart contracts because ZkSync EVM not compatible with Ethereum ENV

What should be done?

Add support Hardhat Network module for ZkSync.
By default it module has backed by the @ethereumjs/vm EVM implementation, the same one used by ganache, Remix and Ethereum Studio.

For support ZkSync should be implement own version of @ethereumjs/vm

What will it give developers?

Allow use hardhat for local developing:

• allow fork node and run test on particular blockNumber
• allow emulate transaction on local node with debug

What will it give ZkSync?

increase in new protocols and products because development and testing is becomes the same as Ethereum ecosystem.

Who does this feature request benefit the most (users, developers, protocol, etc.)?

developers

Additional Details

No response

[uF4No]

Hi @Vorh

Thanks for the feedback. Currently you can test applications locally using the zkSync local setup, which simulates L1/L2 locally and provides similar results as testnet/mainnet.

You can find more info about it in this page from the docs.

We know there are some gaps in features with the Hardhat node but we're working on it.

[Vorh]

How to emulate fail transaction from ZkSync on local node on particular blockNumber?
I read tutorial from link above but not find any information about it.
Do I can to view contract address or some other debug information where throw error?

[Vorh]

@uF4No @bxpana any news about support hardhat node?

[Vorh]

@uF4No @bxpana any news about support hardhat node?

[uF4No]

hey @Vorh the Hardhat node has some differences with the zkEVM on Era. We've just released an alpha version of our local in-memory node, which supports features like forking or replaying transactions from testnet/mainnet. It also supports using console.log in your contracts.

You can find the differences in features between the docker node and the in-memory node here.

The in-memory node is open-source so you can report any issues in the repo.

[Vorh]

@uF4No Thanks a lot! This is very good news!