类型参数
- R extends AgnosticRouteObject
- LazyRouteFunction(): Promise<Exclude<{
[K in string | number | symbol]: K extends Exclude<keyof R, ImmutableRouteKey>
? Omit<Omit<R, ImmutableRouteKey>, K<K>> & Required<Pick<Omit<R, ImmutableRouteKey>, K<K>>>
: never
}[Exclude<keyof R, ImmutableRouteKey>], undefined>> Returns Promise<Exclude<{
[K in string | number | symbol]: K extends Exclude<keyof R, ImmutableRouteKey>
? Omit<Omit<R, ImmutableRouteKey>, K<K>> & Required<Pick<Omit<R, ImmutableRouteKey>, K<K>>>
: never
}[Exclude<keyof R, ImmutableRouteKey>], undefined>>
lazy() 函数用于加载路由定义，它可以向路由添加不匹配的相关属性