Remove search params duplication (#81)

* fix: remove search params duplication

* chore: add changeset

* fix: fix test casec

Author: 0x6368656174

.changeset/chilled-penguins-share.md

@@ -0,0 +1,5 @@
+---
+'@as-integrations/aws-lambda': patch
+---
+
+fix search params duplication

src/__tests__/mockAPIGatewayV1Server.ts

@@ -22,7 +22,7 @@ function v1EventFromRequest(shouldBase64Encode: boolean) {
     const multiValueQueryStringParameters: Record<string, string[]> = {};
     for (const [key] of searchParams.entries()) {
       const all = searchParams.getAll(key);
-      if (all.length > 1) {
+      if (all.length !== 0) {
         multiValueQueryStringParameters[key] = all;
       }
     }

src/request-handlers/APIGatewayProxyEventRequestHandler.ts

@@ -34,11 +34,6 @@ export const createAPIGatewayProxyEventRequestHandler = <
       },
       parseQueryParams(event) {
         const params = new URLSearchParams();
-        for (const [key, value] of Object.entries(
-          event.queryStringParameters ?? {},
-        )) {
-          params.append(key, value ?? '');
-        }
         for (const [key, value] of Object.entries(
           event.multiValueQueryStringParameters ?? {},
         )) {