Use as const

#5089

src/server/api/endpoints/drive/files/check-existence.ts

@@ -1,7 +1,6 @@
 import $ from 'cafy';
 import define from '../../../define';
 import { DriveFiles } from '../../../../../models';
-import { types, bool } from '../../../../../misc/schema';
 
 export const meta = {
 	desc: {
@@ -25,8 +24,8 @@ export const meta = {
 	},
 
 	res: {
-		type: types.boolean,
-		optional: bool.false, nullable: bool.false,
+		type: 'boolean' as const,
+		optional: false as const, nullable: false as const,
 	},
 };