Variable markerSchemaConst

markerSchema: SchemaWithPipe<
    readonly [
        AnySchema,
        TransformAction<any, any>,
        ObjectSchema<
            {
                last_read_id: StringSchema<undefined>;
                unread_count: SchemaWithFallback<
                    OptionalSchema<
                        SchemaWithPipe<
                            readonly [
                                NumberSchema<undefined>,
                                IntegerAction<number, undefined>,
                            ],
                        >,
                        undefined,
                    >,
                    undefined,
                >;
                updated_at: SchemaWithPipe<
                    readonly [StringSchema<undefined>, RegexAction<string, undefined>],
                >;
                version: SchemaWithPipe<
                    readonly [NumberSchema<undefined>, IntegerAction<number, undefined>],
                >;
            },
            undefined,
        >,
    ],
> = ...