From ebdb0f61068f0e3356441fb48e24203c0ea1cab7 Mon Sep 17 00:00:00 2001
From: Trivikram Kamat <16024985+trivikr@users.noreply.github.com>
Date: Mon, 16 Dec 2024 14:49:01 -0800
Subject: [PATCH] chore(middleware-flexible-checksums): use switch for
 selecting checksum algorithm function (#6741)

---
 .../src/selectChecksumAlgorithmFunction.ts    | 24 ++++++++++++-------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts b/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts
index 74a09add4a30..a06fea4feee8 100644
--- a/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts
+++ b/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts
@@ -11,11 +11,19 @@ import { getCrc32ChecksumAlgorithmFunction } from "./getCrc32ChecksumAlgorithmFu
 export const selectChecksumAlgorithmFunction = (
   checksumAlgorithm: ChecksumAlgorithm,
   config: PreviouslyResolved
-): ChecksumConstructor | HashConstructor =>
-  ({
-    [ChecksumAlgorithm.MD5]: config.md5,
-    [ChecksumAlgorithm.CRC32]: getCrc32ChecksumAlgorithmFunction(),
-    [ChecksumAlgorithm.CRC32C]: AwsCrc32c,
-    [ChecksumAlgorithm.SHA1]: config.sha1,
-    [ChecksumAlgorithm.SHA256]: config.sha256,
-  }[checksumAlgorithm]);
+): ChecksumConstructor | HashConstructor => {
+  switch (checksumAlgorithm) {
+    case ChecksumAlgorithm.MD5:
+      return config.md5;
+    case ChecksumAlgorithm.CRC32:
+      return getCrc32ChecksumAlgorithmFunction();
+    case ChecksumAlgorithm.CRC32C:
+      return AwsCrc32c;
+    case ChecksumAlgorithm.SHA1:
+      return config.sha1;
+    case ChecksumAlgorithm.SHA256:
+      return config.sha256;
+    default:
+      throw new Error(`Unsupported checksum algorithm: ${checksumAlgorithm}`);
+  }
+};