lesson 14 04-mint.js

[SidharthK2]

await new Promise(async (resolve, reject) => {
        setTimeout(() => reject("Timeout: 'NFTMinted' event did not fire"), 300000) // 5 minute timeout time
        // setup listener for our event
        randomIpfsNft.once("NftMinted", async () => {
            resolve()
        })
        if (chainId == 31337) {
            const requestId = randomIpfsNftMintTxReceipt.events[1].args.requestId.toString()
            const vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock", deployer)
            await vrfCoordinatorV2Mock.fulfillRandomWords(requestId, randomIpfsNft.address)
        }
    })

Why are we wrapping this code inside a promise? why can't we just use await.

[alymurtazamemon]

@SidharthK2 Because we want this execution to be rejected if something goes wrong. With await, it will be stuck at that point if our event does not trigger.

[SidharthK2]

Makes sense, thanks Ali.