[typescript 之 infer](%E6%80%8E%E6%A0%B7%E6%8B%BF%E5%88%B0%E6%B3%9B%E5%9E%8B%E5%87%BD%E6%95%B0%E7%9A%84%E8%BF%94%E5%9B%9E%E5%80%BC%E7%B1%BB%E5%9E%8B.md) [高级类型](%E9%AB%98%E7%BA%A7%E7%B1%BB%E5%9E%8B.md)