feat(response): make result optional

Author: coderbyheart

src/aResponse.spec.ts

@@ -17,6 +17,7 @@ void describe('aResponse()', () => {
 				statusCode: 200,
 				headers: {
 					'Cache-Control': `public, max-age=${60 * 10}`,
+					'content-length': '59',
 					'content-type': 'application/json',
 				},
 				body: JSON.stringify({

src/aResponse.ts

@@ -6,18 +6,22 @@ import type { HttpStatusCode } from '@hello.nrfcloud.com/proto/hello'
 
 export const aResponse = (
 	status: HttpStatusCode,
-	result: {
+	result?: {
 		'@context': URL
 	} & Record<string, unknown>,
 	cacheForSeconds: number = 60,
 	headers?: APIGatewayProxyStructuredResultV2['headers'],
-): APIGatewayProxyResultV2 => ({
-	statusCode: status,
-	headers: {
-		'content-type': 'application/json',
-		'Cache-Control':
-			cacheForSeconds > 0 ? `public, max-age=${cacheForSeconds}` : 'no-store',
-		...(headers ?? {}),
-	},
-	body: JSON.stringify(result),
-})
+): APIGatewayProxyResultV2 => {
+	const body = result !== undefined ? JSON.stringify(result) : undefined
+	return {
+		statusCode: status,
+		headers: {
+			...(body !== undefined ? { 'content-type': 'application/json' } : {}),
+			'content-length': `${body?.length ?? 0}`,
+			'Cache-Control':
+				cacheForSeconds > 0 ? `public, max-age=${cacheForSeconds}` : 'no-store',
+			...(headers ?? {}),
+		},
+		body,
+	}
+}