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blizzardzheng opened this issue Oct 20, 2018 · 0 comments
Open

effects #5

blizzardzheng opened this issue Oct 20, 2018 · 0 comments
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blizzardzheng commented Oct 20, 2018 •
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Principle

说到 effects 必须要提两个知名项目：elmJS 与 redux-saga。
在仔细阅读两个项目的 Architecture 与部分源码后打算引入一些简单的 helper 给 herculex。
effects 目的很简单能更好的去处理函数副作用，提供了一些事务级函数 wrapper 助手。当然这套如果照搬到 herculex 显然是不合理的。因为 herculex 的定位是轻量以及入门门槛低，于是我们需要对 effects 的概念做一些隐藏和删减，并且放弃 generator，最多使用 async 与await 申明式配置副作用。只用最简单的 api 实现部分对异步事件管控即可, 并且用或不用非强制。对效果的描述我们已有 getIn，setIn，dispatch和commit，需要增加的只是一些控制流，如 takeEvery takeLatest。以及增加对纯副作用的监控类似 mobx里的 autorun

api should be

actions: {
   fetchData({commit}) {
	
	},
	getUserInfo({commit, dispatch}) {
       // 默认dispatch就是takeEvery操作，等同于 thunk pattern
		await dispatch.every('fetchUserInfo') // 允许同时启动多个实例, 我们可以fetchData在仍有一个或多个fetchData尚未终止的先前任务的同时开始新任务
		await dispatch.latest('fetchUserInfo') // 只允许一个fetchData任务在任何时刻运行		
	},
},

可测试性论证（待完善）
@blizzardzheng blizzardzheng self-assigned this Oct 20, 2018
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