check `URLSearchParams.constructor`'s params (#2488)

1 files changed, 5 insertions, 5 deletions

diff --git a/js/url_search_params.ts b/js/url_search_params.ts
index 1d9aa43b3..d9c4e59ab 100644
--- a/js/url_search_params.ts
+++ b/js/url_search_params.ts
@@ -280,11 +280,11 @@ export class URLSearchParams {
     // Overload: sequence<sequence<USVString>>
     for (const tuple of init) {
       // If pair does not contain exactly two items, then throw a TypeError.
-      requiredArguments(
-        "URLSearchParams.constructor tuple array argument",
-        tuple.length,
-        2
-      );
+      if (tuple.length !== 2) {
+        throw new TypeError(
+          "URLSearchParams.constructor tuple array argument must only contain pair elements"
+        );
+      }
       this.append(tuple[0], tuple[1]);
     }
   }