unistore微型集中式状态容器
unistore 是一个微型（650B）的集中式状态容器。
特性
非常小却很好地遵循了 Preact 的步伐
类似 Redux 的熟悉的命名和思路
有用的数据选择器，可从状态中提取属性
便携式的操作，可移动到一个通用的地方并导入
简化是唯一目标
Usage
import { Provider, createStore, connect } from 'unistore'
let store = createStore({ count: 0 })
// If actions is a function, it gets passed the store:
let actions = store => ({
// Actions can just return a state update:
increment(state) {
return { count: state.count+1 }
},
// The above example as an Arrow Function:
increment2: ({ count }) => ({ count: count+1 }),
// Async actions can be pure async/promise functions:
async getStuff(state) {
let res = await fetch('/foo.json')
return { stuff: await res.json() }
},
// ... or just actions that call store.setState() later:
incrementAsync(state) {
setTimeout( () => {
store.setState({ count: state.count+1 })
}, 100)
}
})
const App = connect('count', actions)(
({ count, increment }) => (
<div>
<p>Count: {count}</p>
<button onClick={increment}>Increment</button>
</div>
)
)
export default () => (
<Provider store={store}>
<App />
</Provider>
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