one more var instead of func

FirebaseAuth/Sources/Swift/Backend/AuthBackend.swift

@@ -186,7 +186,7 @@ private class AuthBackendRPCImplementation: NSObject, AuthBackendImplementation
   #if os(iOS)
     private class func generateMFAError(response: AuthRPCResponse, auth: Auth) -> Error? {
       if let mfaResponse = response as? AuthMFAResponse,
-         mfaResponse.nilIDToken(),
+         mfaResponse.idToken == nil,
          let enrollments = mfaResponse.mfaInfo {
         var info: [MultiFactorInfo] = []
         for enrollment in enrollments {

FirebaseAuth/Sources/Swift/Backend/RPC/AuthMFAResponse.swift

@@ -24,5 +24,5 @@ protocol AuthMFAResponse {
   var mfaInfo: [AuthProtoMFAEnrollment]? { get }
 
   /// MFA is only done when the idToken is nil.
-  func nilIDToken() -> Bool
+  var idToken: String? { get }
 }

FirebaseAuth/Sources/Swift/Backend/RPC/EmailLinkSignInResponse.swift

@@ -23,7 +23,7 @@ class EmailLinkSignInResponse: NSObject, AuthRPCResponse, AuthMFAResponse {
   /** @property IDToken
    @brief The ID token in the email link sign-in response.
    */
-  var idToken: String?
+  private var _idToken: String?
 
   /** @property email
    @brief The email returned by the IdP.
@@ -51,9 +51,7 @@ class EmailLinkSignInResponse: NSObject, AuthRPCResponse, AuthMFAResponse {
 
   var mfaInfo: [AuthProtoMFAEnrollment]? { return _mfaInfo }
 
-  func nilIDToken() -> Bool {
-    return idToken == nil
-  }
+  var idToken: String? { return _idToken }
 
   /** @property MFAPendingCredential
        @brief An opaque string that functions as proof that the user has successfully passed the first
@@ -68,7 +66,7 @@ class EmailLinkSignInResponse: NSObject, AuthRPCResponse, AuthMFAResponse {
 
   func setFields(dictionary: [String: AnyHashable]) throws {
     email = dictionary["email"] as? String
-    idToken = dictionary["idToken"] as? String
+    _idToken = dictionary["idToken"] as? String
     isNewUser = dictionary["isNewUser"] as? Bool ?? false
     refreshToken = dictionary["refreshToken"] as? String
 

FirebaseAuth/Sources/Swift/Backend/RPC/VerifyAssertionResponse.swift

@@ -97,7 +97,7 @@ class VerifyAssertionResponse: AuthRPCResponse, AuthMFAResponse {
    access token from Secure Token Service, depending on whether @c returnSecureToken is set
    on the request.
    */
-  var idToken: String?
+  private var _idToken: String?
 
   /** @property approximateExpirationDate
    @brief The approximate expiration date of the access token.
@@ -207,9 +207,7 @@ class VerifyAssertionResponse: AuthRPCResponse, AuthMFAResponse {
 
   var mfaInfo: [AuthProtoMFAEnrollment]? { return _mfaInfo }
 
-  func nilIDToken() -> Bool {
-    return idToken == nil
-  }
+  var idToken: String? { return _idToken }
 
   private var _mfaPendingCredential: String?
 
@@ -231,7 +229,7 @@ class VerifyAssertionResponse: AuthRPCResponse, AuthMFAResponse {
     fullName = dictionary["fullName"] as? String
     nickName = dictionary["nickName"] as? String
     displayName = dictionary["displayName"] as? String
-    idToken = dictionary["idToken"] as? String
+    _idToken = dictionary["idToken"] as? String
     if let expiresIn = dictionary["expiresIn"] as? String {
       approximateExpirationDate = Date(timeIntervalSinceNow: (expiresIn as NSString)
         .doubleValue)

FirebaseAuth/Sources/Swift/Backend/RPC/VerifyPasswordResponse.swift

@@ -45,7 +45,7 @@ class VerifyPasswordResponse: AuthRPCResponse, AuthMFAResponse {
           access token from Secure Token Service, depending on whether @c returnSecureToken is set
           on the request.
    */
-  var idToken: String?
+  private var _idToken: String?
 
   /** @property approximateExpirationDate
       @brief The approximate expiration date of the access token.
@@ -68,9 +68,7 @@ class VerifyPasswordResponse: AuthRPCResponse, AuthMFAResponse {
 
   var mfaInfo: [AuthProtoMFAEnrollment]? { return _mfaInfo }
 
-  func nilIDToken() -> Bool {
-    return idToken == nil
-  }
+  var idToken: String? { return _idToken }
 
   private var _mfaPendingCredential: String?
 
@@ -80,7 +78,7 @@ class VerifyPasswordResponse: AuthRPCResponse, AuthMFAResponse {
     localID = dictionary["localId"] as? String
     email = dictionary["email"] as? String
     displayName = dictionary["displayName"] as? String
-    idToken = dictionary["idToken"] as? String
+    _idToken = dictionary["idToken"] as? String
     if let expiresIn = dictionary["expiresIn"] as? String {
       approximateExpirationDate = Date(timeIntervalSinceNow: (expiresIn as NSString)
         .doubleValue)