From 277c2060a04a81ad23d47534b48f88ad10c9b6dd Mon Sep 17 00:00:00 2001
From: Teddy Sterne <teddy.sterne@fountainlife.com>
Date: Fri, 13 Dec 2024 12:21:33 -0500
Subject: [PATCH] fix: Don't duplicate Lambda Event Params

---
 src/adapters/helpers/lambdaEvent.ts | 6 ++++--
 test/lambda-event.test.ts           | 2 --
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/adapters/helpers/lambdaEvent.ts b/src/adapters/helpers/lambdaEvent.ts
index c973567..24e27f7 100644
--- a/src/adapters/helpers/lambdaEvent.ts
+++ b/src/adapters/helpers/lambdaEvent.ts
@@ -21,8 +21,10 @@ export const lambdaEvent = (config: AlphaOptions, relativeUrl?: string) => {
   if (hasMultiValueParams) {
     Object.entries(params).forEach(([key, value]) => {
       multiValueParams = multiValueParams || {};
-      multiValueParams[key] = Array.isArray(value) ? value : [value];
-      params[key] = Array.isArray(value) ? value.join(',') : value;
+      if (Array.isArray(value)) {
+        multiValueParams[key] = value;
+        delete params[key];
+      }
     });
   }
 
diff --git a/test/lambda-event.test.ts b/test/lambda-event.test.ts
index 658d706..bbf9431 100644
--- a/test/lambda-event.test.ts
+++ b/test/lambda-event.test.ts
@@ -31,7 +31,6 @@ test('Can parse URLs with duplicate parameters', () => {
     httpMethod: 'GET',
     path: '/lifeomic/dstu3/Questionnaire',
     queryStringParameters: {
-      _tag: 'http://lifeomic.com/fhir/questionnaire-type|survey-form,http://lifeomic.com/fhir/dataset|0bb18fef-4e2d-4b91-a623-09527265a8b3,http://lifeomic.com/fhir/primary|0343bfcf-4e2d-4b91-a623-095272783bf3',
       pageSize: '25',
     },
     multiValueQueryStringParameters: {
@@ -40,7 +39,6 @@ test('Can parse URLs with duplicate parameters', () => {
         'http://lifeomic.com/fhir/dataset|0bb18fef-4e2d-4b91-a623-09527265a8b3',
         'http://lifeomic.com/fhir/primary|0343bfcf-4e2d-4b91-a623-095272783bf3',
       ],
-      pageSize: ['25'],
     },
   }));
   assertRequestId(result);