contracts/

README

TEN smart contracts

This hardhat project contains the relevant smart contracts for the TEN L2 platform.

Dependencies

NodeJS LTS (v18) NPM (tested with 8.19.3)

Installing

First you'll need to install ethereum locally

brew tap ethereum/ethereum
brew install ethereum

Running the following command will pull all of the relevant dependencies for node and solidity.

npm install

Generating abi bindings for GO

Running the following command will regenerate the bindings in the generated directory:

npx hardhat generate-abi-bindings --output-dir generated

The command internally uses the abi and bytecode exporter plugins and searches the path configured in their configs for exporting for relevant files in order to launch the abigen executable with the correct parameters. More info on installing abigen can be found here

Additionally you can pass the noCompile flag which will disable running the contract compilation beforehand. This allows to build go bindings for abi/bins where the actual solidity source files are missing.

Deploying

Deployment Scripts folder structure

• core - Scripts required to be predeployed for TEN to start.
• bridge - Scripts that deploy/upgrade ONLY the bridge.
• messenger - Scripts that enable the relayer functionality. Can contain predeployed libraries too in the future.
• testnet - Scripts that should only be deployed on the testnet. Tokens, "dev tooling" scripts, etc.

For deployments, we use the hardhat-deploy plugin. It provides the deploy task, which determines what folders with deployment scripts need to be executed for the current selected network. Additionally there is the ten:deploy task that will launch a wallet extension. For the wallet extension to work, the network needs to have configured the url to 127.0.0.1:3000 and the additional tenEncRpcUrl property to the rpc endpoint of the TEN node the wallet will connect to.

Scripts are taken from deployment_scripts and executed in alphabetic order. Each folder, as ordered in the network config and then inside of it alphabetically. Notice that func.dependencies = [] defined in deployment functions has the ability to escape the default ordering. If such a deployment function/script is reached, the deploy plugin will first deploy its dependency if it hasn't already.

Compilation

The following command compiles the solidity contracts and produces artifacts for them:

npx hardhat compile

[https://www.npmjs.com/package/hardhat-ignore-warnings](The ignore warnings plugin) can be used to configure the behavior of the compile task in regards to warnings and errors.