fix: support schema type inference based on schema options timestamps as well

test/types/schema.test.ts

@@ -1575,3 +1575,32 @@ function gh14748() {
   const subdoc3 = schema.path<Schema.Types.Subdocument<{ name: string }>>('singleNested').cast({ name: 'bar' });
   expectAssignable<{ name: string }>(subdoc3);
 }
+
+function gh13215() {
+  const schemaDefinition = {
+    userName: { type: String, required: true }
+  } as const;
+  const schemaOptions = {
+    typeKey: 'type',
+    timestamps: {
+      createdAt: 'date',
+      updatedAt: false
+    }
+  } as const;
+
+  type RawDocType = InferRawDocType<
+    typeof schemaDefinition,
+    typeof schemaOptions
+  >;
+  type User = {
+    userName: string;
+  } & {
+    date: Date;
+  };
+
+  expectType<User>({} as RawDocType);
+
+  const schema = new Schema(schemaDefinition, schemaOptions);
+  type SchemaType = InferSchemaType<typeof schema>;
+  expectType<User>({} as SchemaType);
+}

types/inferrawdoctype.d.ts

@@ -10,12 +10,12 @@ declare module 'mongoose' {
   export type InferRawDocType<
     DocDefinition,
     TSchemaOptions extends Record<any, any> = DefaultSchemaOptions
-  > = {
+  > = ApplySchemaOptions<{
     [
     K in keyof (RequiredPaths<DocDefinition, TSchemaOptions['typeKey']> &
     OptionalPaths<DocDefinition, TSchemaOptions['typeKey']>)
     ]: ObtainRawDocumentPathType<DocDefinition[K], TSchemaOptions['typeKey']>;
-  };
+  }, TSchemaOptions>;
 
   /**
    * @summary Obtains schema Path type.

types/inferschematype.d.ts

@@ -74,14 +74,25 @@ declare module 'mongoose' {
 
   type ApplySchemaOptions<T, O = DefaultSchemaOptions> = ResolveTimestamps<T, O>;
 
-  type ResolveTimestamps<T, O> = O extends { timestamps: true }
+  type ResolveTimestamps<T, O> = O extends { methods: any } | { statics: any } | { virtuals: any } | { timestamps?: false } ? T
     // For some reason, TypeScript sets all the document properties to unknown
     // if we use methods, statics, or virtuals. So avoid inferring timestamps
     // if any of these are set for now. See gh-12807
-    ? O extends { methods: any } | { statics: any } | { virtuals: any }
-      ? T
-      : { createdAt: NativeDate; updatedAt: NativeDate; } & T
-    : T;
+    : O extends { timestamps: infer TimestampOptions } ? TimestampOptions extends true
+      ? { createdAt: NativeDate; updatedAt: NativeDate; } & T
+      : TimestampOptions extends SchemaTimestampsConfig
+        ? {
+          -readonly [K in keyof Pick<
+            TimestampOptions,
+            'createdAt' | 'updatedAt'
+          > as TimestampOptions[K] extends true
+            ? K
+            : TimestampOptions[K] extends string
+              ? TimestampOptions[K]
+              : never]: NativeDate;
+        } & T
+        : T
+      : T;
 }
 
 type IsPathDefaultUndefined<PathType> = PathType extends { default: undefined } ?