实现 isProxy

isProxy检查一个对象是不是通过 reactive 或者 readonly 创建的响应式对象,实际上就是 isReactive 和 isReadonly 的结合体

实现 isProxy 功能

单测

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//reactivity/__test__/reactive.spec.ts
...
import { isProxy, reactive, readonly } from '../reactive'
it('isProxy', () => {
  const user = { age: 18, name: '秋簌' }
  const reactiveObj = reactive(user)
  const readonlyObj = readonly(user)
  expect(isProxy(reactiveObj)).toBe(true)
  expect(isProxy(readonlyObj)).toBe(true)
  expect(isProxy(user)).toBe(false)
})

实现单测

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//reactivity/reactive.ts
...
export const isProxy = raw => isReactive(raw) || isReadonly(raw)