From 1b2ba09be05338b1680d664970ef28b5ea6464a6 Mon Sep 17 00:00:00 2001
From: tamaina <tamaina@hotmail.co.jp>
Date: Sun, 24 Apr 2022 11:43:15 +0900
Subject: [PATCH]  fix: Fix schema key type error #8517 (#8538)

---
 packages/backend/src/misc/schema.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/backend/src/misc/schema.ts b/packages/backend/src/misc/schema.ts
index 5b6981209..9da13d599 100644
--- a/packages/backend/src/misc/schema.ts
+++ b/packages/backend/src/misc/schema.ts
@@ -89,7 +89,7 @@ export interface Schema extends OfSchema {
 	readonly optional?: boolean;
 	readonly items?: Schema;
 	readonly properties?: Obj;
-	readonly required?: ReadonlyArray<keyof NonNullable<this['properties']>>;
+	readonly required?: ReadonlyArray<Extract<keyof NonNullable<this['properties']>, string>>;
 	readonly description?: string;
 	readonly example?: any;
 	readonly format?: string;