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react-eva

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

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# Installation Guide

1. Get the code

git clone https://github.com/janryWang/react-eva

Downloads the entire project code from GitHub to your computer.

cd react-eva

Moves into the project folder you just downloaded.

2. Node.js

Easy Recommended

Prerequisites

Git Needed to download the project code from GitHub.
Node.js Node.js must be installed to use npm. The LTS version is recommended.

npm install --save react-eva

Downloads and installs the libraries listed in package.json.

✅ After running the command, open the address shown in the terminal (usually something like http://localhost:3000) in your browser.

Pulled directly from this repo's README.

// repository documentation

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# 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 (
    <div className="sample">
      <div className="text">{state.text}</div>
      <button className="inner-btn" onClick={() => dispatch("onClick")}>
        button
      </button>
    </div>
  );
};

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

const effects = createEffects(async $ => {
  console.log(await actions.getText());
  $("onClick").subscribe(() => {
    actions.setText("hello world");
  });
});

ReactDOM.render(
  <App actions={actions} effects={effects} />,
  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.