fs: remove unnecessary argument check

Writable already assures that only Buffer's are passed to _write. Also
this is not the "correct" way to handle errors inside _write.

PR-URL: https://github.com/nodejs/node/pull/29043
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

1 files changed, 7 insertions, 6 deletions

diff --git a/test/parallel/test-fs-write-stream.js b/test/parallel/test-fs-write-stream.js
index 5e75f4a0b3..18374f44eb 100644
--- a/test/parallel/test-fs-write-stream.js
+++ b/test/parallel/test-fs-write-stream.js
@@ -56,12 +56,13 @@ tmpdir.refresh();
 // Throws if data is not of type Buffer.
 {
   const stream = fs.createWriteStream(file);
-  common.expectsError(() => {
-    stream._write(42, null, function() {});
-  }, {
+  stream.on('error', common.expectsError({
     code: 'ERR_INVALID_ARG_TYPE',
-    type: TypeError,
-    message: 'The "data" argument must be of type Buffer. Received type number'
-  });
+    type: TypeError
+  }));
+  stream.write(42, null, common.expectsError({
+    code: 'ERR_INVALID_ARG_TYPE',
+    type: TypeError
+  }));
   stream.destroy();
 }