From c302eb656c9c88f6ae50363c2cc2fd5962ee63ca Mon Sep 17 00:00:00 2001
From: Andrew Haines <andrew@haines.org.nz>
Date: Fri, 13 Oct 2023 16:11:00 +0100
Subject: [PATCH] Document new behavior

Signed-off-by: Andrew Haines <andrew@haines.org.nz>
---
 packages/protobuf/src/to-plain-message.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/protobuf/src/to-plain-message.ts b/packages/protobuf/src/to-plain-message.ts
index 79c7f7984..f88468369 100644
--- a/packages/protobuf/src/to-plain-message.ts
+++ b/packages/protobuf/src/to-plain-message.ts
@@ -18,10 +18,13 @@ import { Message } from "./message.js";
 import type { AnyMessage, PlainMessage } from "./message.js";
 
 /**
- * toPlainMessage returns a new object by striping
+ * toPlainMessage returns a new object by stripping
  * all methods from a message, leaving only fields and
  * oneof groups. It is recursive, meaning it applies this
  * same logic to all nested message fields as well.
+ *
+ * If the argument is already a plain message, it is
+ * returned as-is.
  */
 export function toPlainMessage<T extends Message<T>>(
   message: T | PlainMessage<T>,