From c7f72739436acc09b46220aacd72274f0bb10f96 Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Tue, 10 Sep 2024 11:31:21 -0400
Subject: [PATCH 1/2] types: make SchemaType static `setters` property
 accessible in TypeScript

Fix #14879
---
 test/types/schema.test.ts | 4 ++++
 types/schematypes.d.ts    | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/test/types/schema.test.ts b/test/types/schema.test.ts
index 04828bc4f17..5a399a0c7db 100644
--- a/test/types/schema.test.ts
+++ b/test/types/schema.test.ts
@@ -1634,3 +1634,7 @@ function gh14825() {
   type SchemaType = InferSchemaType<typeof schema>;
   expectAssignable<User>({} as SchemaType);
 }
+
+function gh14879() {
+  Schema.Types.String.setters.push((val?: unknown) => typeof val === 'string' ? val.trim() : val);
+}
diff --git a/types/schematypes.d.ts b/types/schematypes.d.ts
index e8a0ecffdf0..37e255443fc 100644
--- a/types/schematypes.d.ts
+++ b/types/schematypes.d.ts
@@ -216,6 +216,9 @@ declare module 'mongoose' {
     /** Attaches a getter for all instances of this schema type. */
     static get(getter: (value: any) => any): void;
 
+    /** Array containing default setters for all instances of this SchemaType */
+    static setters: Function[];
+
     /** The class that Mongoose uses internally to instantiate this SchemaType's `options` property. */
     OptionsConstructor: SchemaTypeOptions<T>;
 

From 60541e7480ac4ce2b3d69cc7a5f41e1d3322385e Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Wed, 11 Sep 2024 11:45:38 -0400
Subject: [PATCH 2/2] types: add function args to setters property

---
 types/schematypes.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/types/schematypes.d.ts b/types/schematypes.d.ts
index 37e255443fc..f5ca8ec0da9 100644
--- a/types/schematypes.d.ts
+++ b/types/schematypes.d.ts
@@ -217,7 +217,7 @@ declare module 'mongoose' {
     static get(getter: (value: any) => any): void;
 
     /** Array containing default setters for all instances of this SchemaType */
-    static setters: Function[];
+    static setters: ((val?: unknown, priorVal?: unknown, doc?: Document<unknown>, options?: Record<string, any> | null) => unknown)[];
 
     /** The class that Mongoose uses internally to instantiate this SchemaType's `options` property. */
     OptionsConstructor: SchemaTypeOptions<T>;