From 5833ec1226d783656a47b004266313c964886fe3 Mon Sep 17 00:00:00 2001
From: George Fu <kuhe@users.noreply.github.com>
Date: Fri, 20 Sep 2024 16:57:36 +0000
Subject: [PATCH] use class inheritance

---
 .../src/checksum/createChecksumStream.browser.ts         | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/packages/util-stream/src/checksum/createChecksumStream.browser.ts b/packages/util-stream/src/checksum/createChecksumStream.browser.ts
index 7dc69867552..d354ec16c70 100644
--- a/packages/util-stream/src/checksum/createChecksumStream.browser.ts
+++ b/packages/util-stream/src/checksum/createChecksumStream.browser.ts
@@ -107,6 +107,8 @@ export const createChecksumStream = ({
   return readable;
 };
 
+const ReadableStreamRef = typeof ReadableStream === "function" ? ReadableStream : function (): void {};
+
 /**
  * This stub exists so that the readable returned by createChecksumStream
  * identifies as "ChecksumStream" in alignment with the Node.js
@@ -114,9 +116,4 @@ export const createChecksumStream = ({
  *
  * @extends ReadableStream
  */
-export function ChecksumStream(): void {}
-
-if (typeof ReadableStream === "function") {
-  ChecksumStream.prototype = Object.create(ReadableStream.prototype);
-  ChecksumStream.prototype.constructor = ChecksumStream;
-}
+export class ChecksumStream extends (ReadableStreamRef as any) {}