Lesson 6: understanding wait and deployed

[NotNotRama]

I'm trying to understand the purpose of the wait and deployed methods with ethers/hardhat.

SimpleStorageFactory.deploy() would deploy the contract, but what's the purpose of doing something like contract.deployTransaction.wait(1) or using the simpleStorage.deployed() methods?

[RoboCrypter]

@NotNotRama : Simply put :

• contract.deployTransaction.wait(1) : We do this, If we want to wait certain amounts of block before out transaction went through! in this case 1 Block.

• simpleStorage.deployed() : The purpose of this is we are waiting for SimpleStorage contract to get successfully deployed!

[NotNotRama]

@abossofmyself so basically, deploy just "tries" to deploy the contract but doesn't guarantee that it will be successful and these two methods are ways to make sure they were correctly deployed?

[RoboCrypter]

@NotNotRama : Correct!

First we do : const simpleStorage = await SimpleStorageFactory.deploy() To deploy the contract!
Then we do : await simpleStorage.deployed() For it to be successfully deployed!

[RoboCrypter]

@NotNotRama : If your query is clear mark the answer as answered to close this discussion! ThankYou

[krakxn]

@NotNotRama SimpleStorageFactory.deploy() deploys the actual contract which the ContractFactory instance represents.

contract.deployTransaction.wait(1) Here, .wait(<insert number>) the number represents the number of blocks you want to "wait" (for them to be mined). 1 means we are waiting for one block (to be mined).

simpleStorage.deployed() Here, .deployed() serves as a "progress-checker", one which will pass once simpleStorage is deployed.

For example, xyzContract.deployed will wait until xyzContract is deployed and will return true once deployed. So, it serves for a confirmation for the contract to be deployed.