diff --git a/.eslintrc.js b/.eslintrc.js
deleted file mode 100644
index 9ae7956..0000000
--- a/.eslintrc.js
+++ /dev/null
@@ -1,12 +0,0 @@
-module.exports = {
-  env: {
-    node: true,
-    commonjs: true,
-    es2021: true,
-  },
-  extends: "eslint:recommended",
-  parserOptions: {
-    ecmaVersion: 12,
-  },
-  rules: {},
-};
diff --git a/src/db/utils.ts b/src/db/utils.ts
index 6e5f3d3..552463d 100644
--- a/src/db/utils.ts
+++ b/src/db/utils.ts
@@ -9,7 +9,7 @@ export function addContact(
 ): void {
   User.findOne({ where: { telegram: userATelegram } }).then((userA) => {
     User.findOne({ where: { id: userBRowID } }).then((userB) => {
-      if (!!userA || !!userB) {
+      if (!userA || !userB) {
         done(false, "Could not find user.");
         return;
       }
diff --git a/src/routes/CodeRoute.ts b/src/routes/CodeRoute.ts
index 9f435b4..aee5b49 100644
--- a/src/routes/CodeRoute.ts
+++ b/src/routes/CodeRoute.ts
@@ -21,7 +21,7 @@ export function CodeRoute(req: Request, res: Response) {
 
 function createQRCode(
   telegram: TelegramID,
-  callback: (errorMessage: string, url?: string) => void
+  callback: (errorMessage: string | Error, url?: string) => void
 ): void {
   User.findOne({
     where: {
@@ -38,7 +38,7 @@ function createQRCode(
             verifyURL,
             { width: 300, height: 300 } as QRCodeToDataURLOptions,
             (error, url) => {
-              callback(error.message, url);
+              callback(error, url);
             }
           );
         });
diff --git a/src/routes/VerifyRoute.ts b/src/routes/VerifyRoute.ts
index 43295f3..8a3b47b 100644
--- a/src/routes/VerifyRoute.ts
+++ b/src/routes/VerifyRoute.ts
@@ -45,6 +45,4 @@ function checkVerification(
       callback(false, "No such verification");
     }
   });
-}
-
-exports.VerifyRoute = VerifyRoute;
+}
\ No newline at end of file