hardhat:tldr:004e9

The command "hardhat clean" is a command used in the Hardhat development environment for Ethereum smart contracts.

The "clean" command is used to remove the "artifacts" directory, which is a directory where Hardhat stores the compiled contract artifacts and build files. These artifacts are generated when you compile your smart contract using Hardhat.

By running "hardhat clean", you essentially delete the "artifacts" directory and its content. This can be useful when you want to start fresh or remove any previously generated artifacts before recompiling your contracts.

It's important to note that running the "clean" command will delete all the compiled contract artifacts, so make sure you have a backup or a repository where you can retrieve them if needed.