Where is the "MockV3Aggregator"

[wxy-sudo]

Can anyone tell me how did the code know where "MockV3Aggregator" is?

const { network } = require("hardhat")

const DECIMALS = "8"
const INITIAL_PRICE = "200000000000" // 2000
module.exports = async ({ getNamedAccounts, deployments }) => {
    const { deploy, log } = deployments
    const { deployer } = await getNamedAccounts()
    const chainId = network.config.chainId
    // If we are on a local development network, we need to deploy mocks!
    if (chainId == 31337) {
        log("Local network detected! Deploying mocks...")
        await deploy("MockV3Aggregator", {
            contract: "MockV3Aggregator",
            from: deployer,
            log: true,
            args: [DECIMALS, INITIAL_PRICE],
        })
        log("Mocks Deployed!")
        log("------------------------------------------------")
        log(
            "You are deploying to a local network, you'll need a local network running to interact"
        )
        log(
            "Please run `npx hardhat console` to interact with the deployed smart contracts!"
        )
        log("------------------------------------------------")
    }
}
module.exports.tags = ["all", "mocks"]

[wxy-sudo]

Also, when was the MockV3Aggregator deployed

[krakxn]

Here (notice the path on top as well):

As for when it was deployed, it is done so when you run the script in the code snippet in the discussion's description, i.e.

await deploy("MockV3Aggregator", {
            contract: "MockV3Aggregator",
            from: deployer,
            log: true,
            args: [DECIMALS, INITIAL_PRICE],
        })

here.

[wxy-sudo]

and what is the use of MockV3Aggregator

[krakxn]

As so,

[wxy-sudo]

well, grateful for solving my problem

[krakxn]

Good luck! :)