stream: remove always-false condition check

Trott · danielleadams · commit 5e890be36023 · 2022-01-31T23:56:37.000-05:00
Remove comparison to null of variable guaranteed to be a boolean. PR-URL: #41488 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Robert Nagy <ronagy@icloud.com> Reviewed-By: Tobias Nießen <tniessen@tnie.de> Reviewed-By: Darshan Sen <raisinten@gmail.com>
diff --git a/lib/internal/streams/utils.js b/lib/internal/streams/utils.js
@@ -123,14 +123,14 @@ function isDisturbed(stream) {
 function isReadable(stream) {
   if (stream && stream[kIsReadable] != null) return stream[kIsReadable];
   const r = isReadableNodeStream(stream);
-  if (r === null || typeof stream?.readable !== 'boolean') return null;
+  if (typeof stream?.readable !== 'boolean') return null;
   if (isDestroyed(stream)) return false;
   return r && stream.readable && !isReadableFinished(stream);
 }
 
 function isWritable(stream) {
   const r = isWritableNodeStream(stream);
-  if (r === null || typeof stream?.writable !== 'boolean') return null;
+  if (typeof stream?.writable !== 'boolean') return null;
   if (isDestroyed(stream)) return false;
   return r && stream.writable && !isWritableEnded(stream);
 }
