chore: smart contract improvements

contracts/GitcoinAttester.sol

@@ -2,62 +2,65 @@
 pragma solidity ^0.8.9;
 
 import "@openzeppelin/contracts/access/Ownable.sol";
-import {AttestationRequest, AttestationRequestData, IEAS, Attestation, MultiAttestationRequest} from "@ethereum-attestation-service/eas-contracts/contracts/IEAS.sol";
+import { AttestationRequest, AttestationRequestData, IEAS, Attestation, MultiAttestationRequest } from "@ethereum-attestation-service/eas-contracts/contracts/IEAS.sol";
 
 /**
  * @title GitcoinAttester
  * @dev A contract that allows a Verifier contract to add passport information for users using Ethereum Attestation Service.
  */
 contract GitcoinAttester is Ownable {
-    address private easContractAddress; // The address of the EAS contract.
-    mapping(address => bool) public verifiers; // An allow-list of Verifiers that are authorized and trusted to call the addPassport function.
-
-    IEAS eas; // The instance of the EAS contract.
-
-    event VerifierAdded(address verifier); // Emitted when a verifier is added to the allow-list.
-    event VerifierRemoved(address verifier); // Emitted when a verifier is removed from the allow-list.
-
-    /**
-     * @dev Adds a verifier to the allow-list.
-     * @param _verifier The address of the verifier to add. It must be a Gnosis Safe contract.
-     */
-    function addVerifier(address _verifier) public onlyOwner {
-        require(!verifiers[_verifier], "Verifier already added");
-        verifiers[_verifier] = true;
-        emit VerifierAdded(_verifier);
-    }
-
-    /**
-     * @dev Removes a verifier from the allow-list.
-     * @param _verifier The address of the verifier to remove.
-     */
-    function removeVerifier(address _verifier) public onlyOwner {
-        require(verifiers[_verifier], "Verifier does not exist");
-        verifiers[_verifier] = false;
-        emit VerifierRemoved(_verifier);
-    }
-
-    /**
-     * @dev Sets the address of the EAS contract.
-     * @param _easContractAddress The address of the EAS contract.
-     */
-    function setEASAddress(address _easContractAddress) public onlyOwner {
-        easContractAddress = _easContractAddress;
-        eas = IEAS(easContractAddress);
-    }
-
-    /**
-     * @dev Adds passport information for a user using EAS
-     * @param multiAttestationRequest An array of `MultiAttestationRequest` structures containing the user's passport information.
-     */
-    function addPassport(
-        MultiAttestationRequest[] calldata multiAttestationRequest
-    ) public payable virtual returns (bytes32[] memory) {
-        require(
-            verifiers[msg.sender],
-            "Only authorized verifiers can call this function"
-        );
-
-        return eas.multiAttest(multiAttestationRequest);
-    }
+  // An allow-list of Verifiers that are authorized and trusted to call the addPassport function.
+  mapping(address => bool) public verifiers;
+
+  // The instance of the EAS contract.
+  IEAS eas;
+
+  // Emitted when a verifier is added to the allow-list.
+  event VerifierAdded(address verifier);
+
+  // Emitted when a verifier is removed from the allow-list.
+  event VerifierRemoved(address verifier);
+
+  /**
+   * @dev Adds a verifier to the allow-list.
+   * @param _verifier The address of the verifier to add. It must be a Gnosis Safe contract.
+   */
+  function addVerifier(address _verifier) public onlyOwner {
+    require(!verifiers[_verifier], "Verifier already added");
+    verifiers[_verifier] = true;
+    emit VerifierAdded(_verifier);
+  }
+
+  /**
+   * @dev Removes a verifier from the allow-list.
+   * @param _verifier The address of the verifier to remove.
+   */
+  function removeVerifier(address _verifier) public onlyOwner {
+    require(verifiers[_verifier], "Verifier does not exist");
+    verifiers[_verifier] = false;
+    emit VerifierRemoved(_verifier);
+  }
+
+  /**
+   * @dev Sets the address of the EAS contract.
+   * @param _easContractAddress The address of the EAS contract.
+   */
+  function setEASAddress(address _easContractAddress) public onlyOwner {
+    eas = IEAS(_easContractAddress);
+  }
+
+  /**
+   * @dev Adds passport information for a user using EAS
+   * @param multiAttestationRequest An array of `MultiAttestationRequest` structures containing the user's passport information.
+   */
+  function addPassport(
+    MultiAttestationRequest[] calldata multiAttestationRequest
+  ) public payable virtual returns (bytes32[] memory) {
+    require(
+      verifiers[msg.sender],
+      "Only authorized verifiers can call this function"
+    );
+
+    return eas.multiAttest(multiAttestationRequest);
+  }
 }