From f283cda399da8fbbe3c8a1a1eabcaaea7312d0b0 Mon Sep 17 00:00:00 2001
From: Dylan Conway <dylan.conway567@gmail.com>
Date: Wed, 1 Jan 2025 13:00:17 -0800
Subject: [PATCH] fix test-fs-assert-encoding-error.js

---
 src/js/node/fs.ts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/js/node/fs.ts b/src/js/node/fs.ts
index 88b1b7aab3..a66e01d44f 100644
--- a/src/js/node/fs.ts
+++ b/src/js/node/fs.ts
@@ -763,6 +763,12 @@ function ReadStream(this: typeof ReadStream, pathOrFd, options) {
     options = { encoding: options };
   }
 
+  if (options.encoding && options.encoding !== "buffer") {
+    if (!Buffer.isEncoding(options.encoding)) {
+      throw $ERR_INVALID_ARG_VALUE("encoding", options.encoding, "is invalid encoding");
+    }
+  }
+
   if (!$isObject(options) && !$isCallable(options)) {
     throw new TypeError("Expected options to be an object or a string");
   }
@@ -1070,6 +1076,16 @@ var WriteStreamClass = (WriteStream = function WriteStream(path, options = defau
     throw new TypeError("Expected options to be an object");
   }
 
+  if (typeof options === "string") {
+    options = { encoding: options };
+  }
+
+  if (options.encoding && options.encoding !== "buffer") {
+    if (!Buffer.isEncoding(options.encoding)) {
+      throw $ERR_INVALID_ARG_VALUE("encoding", options.encoding, "is invalid encoding");
+    }
+  }
+
   var {
     fs = defaultWriteStreamOptions.fs,
     start = defaultWriteStreamOptions.start,