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ractor

v1.1.7

Published

actor like state management.inspired by actor, redux, mobx.

Downloads

33

Readme

安装

npm i ractor

快速了解 Ractor

Ractor 仅仅包含三个基本概念,您只需要熟悉这三样东西就能彻底掌握 Ractor 的用法。

System

和其他库有所区别, Ractor 的事件系统和逻辑系统是分开的,需要单独创建。一般情况下,您只需要为你的 App 创建一个事件系统。

import { System } from "ractor";
export const system = new System("counter");

Action

类似 Redux 的 action,不过 Ractor 需要用 class 创建它。

export class Increment {}

Store

通俗的说,你可以把 Ractor 的 Store 理解为 Redux 的 Store。唯一的区别是,Redux 的 Store 内置了一套事件分发机制,Ractor 的事件分发由 System 处理。

Store 是个抽象类,你的业务 Store 需要继承它并实现 createReceive 方法。Store 里有个很方便的工具类可以帮您构建用来处理事件的 Receive 对象。

import { Increment } from "./Increment";
import { Decrement } from "./Decrement";
import { Store } from "ractor";

export class CounterStore extends Store<{ value: number }> {
  public state = { value: 1 };
  public createReceive() {
    return this.receiveBuilder()
      .match(Increment, async () => this.setState({ value: this.state.value + 1 }))
      .match(Decrement, async () => this.setState({ value: this.state.value - 1 }))
      .build();
    }
}

除了 class 创建 Store 之外,Ractor 还提供了比较简单的创建方式 createStore

import { ReceiveBuilder } from "ractor"

const CounterStore = createStore((getState, setState) => {
  return ReceiveBuilder
    .create()
    .match(Increment, () => setState(getState + 1))
    .match(Decrement, () => setState(getState - 1))
    .build()
}, 0)

React

我们可以用 ractor-react 也可以用 ractor-hooks 搭配 React 使用。这里主要介绍 ractor-hooks

Provider

在这里注入 system

  import { Provider } from "ractor-hooks"
  import { System } from "ractor"

  function App() {
    return <Provider system={new System("app")}><Counter /></Provider>
  }

useStore

输入 Ractor Store 的子类作为参数,输出实例化之后的状态。

function Counter() {
  const counter = useStore(CounterStore)
  return jsx
}

useSystem

输出 Provider 注入的 system。建议直接倒入 system,不太建议使用这种方式获取 system。

function Counter() {
  const system = useSystem(CounterStore)
  system.dispatch(new Increment)
  return jsx
}

Examples

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