Add readable validation error

src/server/middleware/error-handler.ts

@@ -1,5 +1,7 @@
 import { NextFunction, Request, Response } from 'express';
 
+import { isJsonString } from '../utils';
+
 const errorHandler = (
   err: any,
   req: Request,
@@ -10,7 +12,9 @@ const errorHandler = (
     statusCode: err.statusCode || 500,
     response: 'Error',
     error: {
-      message: JSON.parse(err.message) || err.message,
+      message: isJsonString(err.message)
+        ? JSON.parse(err.message)
+        : err.message,
       path: req.path,
     },
   });

src/server/middleware/validateRequest.ts

@@ -42,7 +42,15 @@ export const validateRequest: <TParams = any, TQuery = any, TBody = any>(
     }
 
     if (errors.length > 0) {
-      throw ApiError.badRequest(JSON.stringify(errors));
+      throw ApiError.badRequest(
+        JSON.stringify(
+          [
+            `[${errors[0].type}]`,
+            `[${errors[0].errors.issues[0].path[0]}]`,
+            errors[0].errors.issues[0].message,
+          ].join(' ')
+        )
+      );
     }
     return next();
   };