redo logic for setURLSearchParams

Author: TimothyGu

lib/internal/url.js

@@ -169,7 +169,7 @@ class URLContext {
 
 let setURLSearchParamsContext;
 let getURLSearchParamsList;
-let setURLSearchParamsList;
+let setURLSearchParams;
 
 class URLSearchParamsIterator {
   #target;
@@ -277,8 +277,12 @@ class URLSearchParams {
       obj.#context = ctx;
     };
     getURLSearchParamsList = (obj) => obj.#searchParams;
-    setURLSearchParamsList = (obj, list) => {
-      obj.#searchParams = list;
+    setURLSearchParams = (obj, query) => {
+      if (query === undefined) {
+        obj.#searchParams = [];
+      } else {
+        obj.#searchParams = parseParams(query);
+      }
     };
   }
 
@@ -770,9 +774,9 @@ class URL {
 
     if (this.#searchParams) {
       if (this.#context.hasSearch) {
-        setURLSearchParamsList(this.#searchParams, parseParams(this.search));
+        setURLSearchParams(this.#searchParams, this.search);
       } else {
-        setURLSearchParamsList(this.#searchParams, []);
+        setURLSearchParams(this.#searchParams, undefined);
       }
     }
   }