Vue3 reactive 之源码的实现

Reflect.get()方法与从 对象 (target[propertyKey]) 中读取属性类似，但它是通过一个函数执行来操作的。

export const reactive = <T extends object>(target: T) => {
  return new Proxy(target, {
    get(target, key, receiver) {
      const res = Reflect.get(target, key, receiver)
      return res
    },
    set(target, key, receiver) {
      const res = Reflect.get(target, key, receiver)
      return res
    }
  })
}

reactive({})

• Reflect 传送门：https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Reflect/get