Lesson 13: Argument of type 'string' is not assignable to parameter of type 'Signer'

[SimasG]

Whenever I fetch a contract using ethers.getContractAt, connecting it to my deployer address leads to a TypeScript error of Argument of type 'string' is not assignable to parameter of type 'Signer'.

Example:

const getLendingPool = async (account: string): Promise<ILendingPool> => {
  const lendingPoolAddressesProvider = await ethers.getContractAt(
    "ILendingPoolAddressesProvider",
    "0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5",
    // ** Type "string" is not assignable to type "Signer"
    account
  );

  const lendingPoolAddress =
    await lendingPoolAddressesProvider.getLendingPool();

  // Getting Lending Pool Contract itself
  const lendingPool = await ethers.getContractAt(
    "ILendingPool",
    lendingPoolAddress,
    // ** Type "string" is not assignable to type "Signer"
    account
  );
  return lendingPool;
};

Typecasting deployer to Signer doesn't work (since it isn't a string type).

Although surprisingly, everything seems to run correctly without connecting these contracts to our deployer account address.

My repo: https://github.com/SimasG/Solidity-JS-32hr-Course-FCC/tree/main/hardhat-defi-fcc-ts

Any help would be appreciated!

[alymurtazamemon]

@SimasG give it a type Address

[alymurtazamemon]

@SimasG I mean do not pass it in parameter just try hardcoded by replacing account

[SimasG]

Yes, both this:

  const deployer = "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266";

and then this:

  const lendingPoolAddressesProvider = await ethers.getContractAt(
    "ILendingPoolAddressesProvider",
    "0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5",
    // ** Type "string" is not assignable to type "Signer"
    "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"
  );

[alymurtazamemon]

@SimasG Let me check it locally!

[alymurtazamemon]

@SimasG For me, it is working fine, I did not change anything

[SimasG]

@alymurtazamemon, yes indeed. It still doesn't explain why I can't connect these contracts to my deployer account? Or should I even need to do that?