From 201071b2b55765bc82c0d39ecb11ca7b580b30df Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Sun, 17 Jul 2022 16:01:54 -0400
Subject: [PATCH] fix(types): allow any value for AddFields

Fix #12096
---
 test/types/PipelineStage.test.ts | 8 ++++++++
 types/expressions.d.ts           | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/test/types/PipelineStage.test.ts b/test/types/PipelineStage.test.ts
index 37968a3b366..67dc3078185 100644
--- a/test/types/PipelineStage.test.ts
+++ b/test/types/PipelineStage.test.ts
@@ -415,3 +415,11 @@ const stages4: PipelineStage[] = [
     }
   }
 ];
+
+(function gh12096() {
+  const data: PipelineStage.AddFields = {
+    $addFields: {
+      name: { $meta: 'Bill' }
+    }
+  };
+})();
diff --git a/types/expressions.d.ts b/types/expressions.d.ts
index 69b882b2eb6..bce492cfe5d 100644
--- a/types/expressions.d.ts
+++ b/types/expressions.d.ts
@@ -2449,7 +2449,7 @@ declare module 'mongoose' {
     FunctionExpression |
     ObjectIdExpression |
     ConditionalExpressionOperator |
-    Expression.Let;
+    any;
 
   export type ObjectIdExpression =
     TypeExpressionOperatorReturningObjectId;