From 7527818a418f7cf1c3923a80bfe6de3604a1fab2 Mon Sep 17 00:00:00 2001
From: liuyi <liuyi@dtstack.com>
Date: Thu, 19 Oct 2023 19:24:01 +0800
Subject: [PATCH] fix: #90 optimize getParameterByName's return

---
 src/utils.ts       | 10 +++++++++-
 test/utils.test.ts | 12 ++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/utils.ts b/src/utils.ts
index e7159bb..9485918 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -100,7 +100,15 @@ const utils = {
         if (!results[2]) {
             return '';
         }
-        return decodeURIComponent(results[2].replace(/\+/g, ' '));
+
+        const paramValue = decodeURIComponent(results[2].replace(/\+/g, ' '));
+        if (paramValue === 'null') {
+            return null;
+        }
+        if (paramValue === 'undefined') {
+            return undefined;
+        }
+        return paramValue;
     },
     /**
      *
diff --git a/test/utils.test.ts b/test/utils.test.ts
index ca1e935..798a63f 100644
--- a/test/utils.test.ts
+++ b/test/utils.test.ts
@@ -79,6 +79,18 @@ describe('utils:', () => {
             '张三'
         );
     });
+    test('getParameterByName()=>null', () => {
+        assert.strictEqual(
+            getParameterByName('name', 'http://gitlab.prod.dtstack.cn?name=null'),
+            null
+        );
+    });
+    test('getParameterByName()=>undefined', () => {
+        assert.strictEqual(
+            getParameterByName('name', 'http://gitlab.prod.dtstack.cn?name=undefined'),
+            undefined
+        );
+    });
     test('percent(1)=>100%', () => {
         assert.strictEqual(percent(1), '100%');
     });