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withDerived

提示

如果你在 React 中使用，建议直接使用 withUseDerived，出于 API 限制，它会同时贡献 store.derived() 和 store.useDerived() 方法以方便在 React 组件中使用。

给 store 贡献 store.derived() 方法，声明一次派生数据，即可在任意时刻获取派生数据最新值。

import { create, withDerived } from '@shined/reactive'

const store = withDerived(
  create({
    count: 0,
    tab: 'home' as 'home' | 'about',
  }),
  (s) => ({
    doubleCount: s.count * 2,
    isHome: s.tab === 'home',
  }),
)

const isHome = store.derived().isHome

withDerived#

withDerived