network config

[GaneshDonikena]

Hi everyone! , why can't we write the following code in hardhat-config.js ?

const networkConfig = {
    4: {
        name: "rinkeby",
        vrfCoordinatorV2: "0x6168499c0cFfCaCD319c818142124B7A15E857ab",
    },
}

[ghost]

Hey, I can’t know for sure, as I’m new to Hardhat, but assuming you mean hardhat.config.js, I think the reason not to do that is:

Best case scenario: you’d confuse other developers because those aren’t Hardhat configuration options.

Worst case scenario: Hardhat would throw an error because those aren’t Hardhat configuration options.

Also, I don’t think the existence of the network configuration object is dependent on us using Hardhat either (i.e. it would still be of use if we switched to raw Ethers), so keeping it in a separate file somewhat adheres to the separation of concerns principle (the concerns here being configuring Hardhat and configuring our deployments across different networks.) helper-hardhat-config.js might be a bad name.

[GaneshDonikena]

Thanks @jav4di

[krakxn]

We use hardhat.config STRICTLY for what Hardhat should understand and implement: importing packages (so that Hardhat can implement them), and other things such as network etc.

networkConfig will be irrelevant here. So, we make a different file for that. Also because Hardhat does not have to know anything about it, we solely use it for our logical operations.

Hope this answers your doubts.

[GaneshDonikena]

Thanks @krakxn. You are a saviour.

[Itoro-Brown]

Hi please, how do I add the testnet eth to my metamask wallet? I tried doing that with the Rinkeby faucet but it keeps saying that my account has been funded and I needed to wait 24 hours. In real sense my account is empty.

[krakxn]

All good - best of luck with the course!

(I am muting this discussion as I believe there are credible answers already - please close this when there is a satisfying answer)

[alymurtazamemon]

@GaneshDonikena You can use there also, but for readability, we have moved all of the helper things to a separate file. networkConfig is just a javascript object you can place wherever you want.