From 4cf155ca0c92bd02733de4c30c5d1d6e36e95b27 Mon Sep 17 00:00:00 2001
From: Filip Skokan <panva.ip@gmail.com>
Date: Mon, 13 Nov 2023 13:47:46 +0100
Subject: [PATCH] stream: add Symbol.toStringTag to Compression Streams

PR-URL: https://github.com/nodejs/node/pull/50712
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
---
 lib/internal/webstreams/compression.js              | 11 +++++++++++
 test/parallel/test-whatwg-webstreams-compression.js |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/lib/internal/webstreams/compression.js b/lib/internal/webstreams/compression.js
index 2ba8e53fa28e73..cda3c4b08f3b5b 100644
--- a/lib/internal/webstreams/compression.js
+++ b/lib/internal/webstreams/compression.js
@@ -2,6 +2,7 @@
 
 const {
   ObjectDefineProperties,
+  SymbolToStringTag,
   Symbol,
 } = primordials;
 
@@ -149,11 +150,21 @@ class DecompressionStream {
 ObjectDefineProperties(CompressionStream.prototype, {
   readable: kEnumerableProperty,
   writable: kEnumerableProperty,
+  [SymbolToStringTag]: {
+    __proto__: null,
+    configurable: true,
+    value: 'CompressionStream',
+  },
 });
 
 ObjectDefineProperties(DecompressionStream.prototype, {
   readable: kEnumerableProperty,
   writable: kEnumerableProperty,
+  [SymbolToStringTag]: {
+    __proto__: null,
+    configurable: true,
+    value: 'DecompressionStream',
+  },
 });
 
 module.exports = {
diff --git a/test/parallel/test-whatwg-webstreams-compression.js b/test/parallel/test-whatwg-webstreams-compression.js
index 859df4e07bed88..f9ae8d87265b58 100644
--- a/test/parallel/test-whatwg-webstreams-compression.js
+++ b/test/parallel/test-whatwg-webstreams-compression.js
@@ -15,6 +15,9 @@ async function test(format) {
   const gzip = new CompressionStream(format);
   const gunzip = new DecompressionStream(format);
 
+  assert.strictEqual(gzip[Symbol.toStringTag], 'CompressionStream');
+  assert.strictEqual(gunzip[Symbol.toStringTag], 'DecompressionStream');
+
   gzip.readable.pipeTo(gunzip.writable).then(common.mustCall());
 
   const reader = gunzip.readable.getReader();