# 介绍

## Acr

在借鉴了 joi 和 yup 之后，acr 底层使用 `defineProperty` 来极大的提高了扩展性。简单来说，acr 重要的只是它的核心部分，验证部分都是可选的，acr 所有的内置验证规则也是基于扩展来实现的。


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