From 325d89651aeba38079d6fb9184adb894df94f083 Mon Sep 17 00:00:00 2001
From: Ali Mihandoost <ali.mihandoost@gmail.com>
Date: Sun, 29 Jan 2023 18:44:09 +0330
Subject: [PATCH] fix(nano-server): compatible with ParamValueType

---
 core/nano-server/src/nano-server.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/nano-server/src/nano-server.ts b/core/nano-server/src/nano-server.ts
index 860dd4b62..a2b7c98f9 100644
--- a/core/nano-server/src/nano-server.ts
+++ b/core/nano-server/src/nano-server.ts
@@ -525,10 +525,10 @@ export class AlwatrConnection {
   /**
    * Parse query param and validate with param type.
    */
-  protected _sanitizeParam(name: string, type: ParamKeyType): ParamValueType {
+  protected _sanitizeParam(name: string, type: ParamKeyType): ParamValueType | null {
     let value = this.url.searchParams.get(name);
 
-    if (value == null || value.length === 0) {
+    if (value == null || value === '') {
       return null;
     }