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https://github.com/janrywang/react-eva

Effects+View+Actions(React distributed state management solution with rxjs.)
https://github.com/janrywang/react-eva

mobx observable react reactive redux rxjs

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Effects+View+Actions(React distributed state management solution with rxjs.)

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README 

        
# React EVA



> Effects+View+Actions(React distributed state management solution with rxjs.)



### Background



In the long process of practice, we found that the one-way data flow management application state may not be a silver bullet.so we can change the way to make React faster.



### Features

- Learning easier

- Smaller than redux

- Faster than one-way data stream, Because when we manage the state distribution, the entire React tree will not be fully redrawn due to a state change.

- More elegant than react ref

- Safer than react ref, Because the traditional way to use the React Ref API is to make it easy for users to access private methods, which is not a problem with React EVA.

- Support React Hooks



### Already used products



- [alibaba uform](https://github.com/alibaba/uform)



### Install



```

npm install --save react-eva

```



### Usage

https://codesandbox.io/s/lr68qp453q

```jsx

import React, { useState } from "react";

import ReactDOM from "react-dom";

import { useEva, createAsyncActions, createEffects } from "react-eva";



const App = ({ actions, effects }) => {

  const [state, setState] = useState({ text: "default" });

  const { implementActions, dispatch } = useEva({ actions, effects });

  implementActions({

    getText: () => state.text,

    setText: text => setState({ text })

  });

  return (

    


      
{state.text}


       dispatch("onClick")}>

        button

      

    


  );

};



const actions = createAsyncActions("getText", "setText");



const effects = createEffects(async $ => {

  console.log(await actions.getText());

  $("onClick").subscribe(() => {

    actions.setText("hello world");

  });

});



ReactDOM.render(

  ,

  document.getElementById("root")

);



```



### API



##### 1. `useEva({actions:Object,effects:Function})`



It will return the following methods.



| property name    | description                                                                                             | type     | params                                              |

| ---------------- | ------------------------------------------------------------------------------------------------------- | -------- | --------------------------------------------------- |

| implementActions | it used for batch create state actions method,and it will communicate with externally declared actions. | Function | `implementAction(type : String,handler : Function)` |

| dispatch         | It is used to dispatch custom events.                                                                   | Function | `dispatch(type:String,..args : any)`                |

| subscription     | It is used to perform side-effect logic.If you set autoRun to false, then you need to call it manually. | Function | `subscription()`                                    |



##### 2. `connect(options : Object | ReactComponent) : (Target : ReactComponent)=>ReactComponent`



The connect's options



| property name | description                              | type    |

| ------------- | ---------------------------------------- | ------- |

| autoRun       | It is used to auto run the subscription. | Boolean |



The target component will receive the following properties.



| property name    | description                                                                                             | type     | params                                              |

| ---------------- | ------------------------------------------------------------------------------------------------------- | -------- | --------------------------------------------------- |

| implementActions | it used for batch create state actions method,and it will communicate with externally declared actions. | Function | `implementAction(type : String,handler : Function)` |

| dispatch         | It is used to dispatch custom events.                                                                   | Function | `dispatch(type:String,..args : any)`                |

| subscription     | It is used to perform side-effect logic.If you set autoRun to false, then you need to call it manually. | Function | `subscription()`                                    |

| subscribes       | It is the core object of event communication.                                                           | Object   |                                                     |



The output component will receive the following properties.



| property name | description                                                  | type     | params                                                       |

| ------------- | ------------------------------------------------------------ | -------- | ------------------------------------------------------------ |

| actions       | This property is designed to internal and external communication of components. | Object   |                                                              |

| effects       | This property is designed to handle the side effects of components. | Function | `effects(callback : ($ : (type : String, filter : Function)=>Observable)=>{})` |



##### 3. `createActions(...type : String) : Object`



It is used for batch declaration of state actions.

(Note: The success of calling actions is that the component has been rendered.)



##### 4. `createAsyncActions(...type : String) : Object`



It is used for batch declaration of state actions.

(Note: All methods will return a Promise object, and we don't have to wait for the component to render completed when we call actions.)



##### 5. `mergeActions(...actions : Object) : Object`



It is used for merge multi actions.



##### 6. `createEffects(callback : ($ : (type : String, filter : Function)=>Observable)=>{}) : Function`



It is used to create a side-effect execution environment.



### LICENSE



The MIT License (MIT)



Copyright (c) 2018 JanryWang



Permission is hereby granted, free of charge, to any person obtaining a copy of

this software and associated documentation files (the "Software"), to deal in

the Software without restriction, including without limitation the rights to

use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

the Software, and to permit persons to whom the Software is furnished to do so,

subject to the following conditions:



The above copyright notice and this permission notice shall be included in all

copies or substantial portions of the Software.



THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS

FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR

COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER

IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.