fluxury

fluxury

For the impatient:

npm install --save fluxury

import {dispatch, createActions, createStore} from 'fluxury'

Why another "Flux framework"?

This is Flux plus 3 new "sugar" functions to guide you into the (state, action) -> state pattern.

In flux@2.1, Facebook added 3 new abstract ES 2015 classes (FluxMapStore -> FluxReduceStore -> FluxStore). These stores guide you into the reducer pattern but, unfortunately, they also lead you into classes. This library reimplements the FluxStore in Douglas Crockford's class-free object oriented programming style.

This library is similar to Reflux and Redux except that this library doesn't try to replace the dispatcher with a new implementation. The library encourages you into simple patterns but doesn't try to change the core concepts. The flux/Dispatcher and fbemitter/EventEmitter modules are the key to Flux and this project depends directly on Facebook's implementations.

This new "Flux framework" adds a surface area of 3 new functions:

• dispatch
• createActions
• createStores

Don't be afraid to read the code. It is sparse 70 lines of ES 2015 code.

Pull requests welcome. Enjoy!

API

1. dispatch( type, data )

Submit an action into the stores. You must specify the type and, optionally, some data.

```js
import {dispatch} from 'fluxury';

dispatch('REQUEST_SETTINGS')
// or with data
dispatch('LOAD_SETTINGS', { a: 1, b: 2 })
```

2. createActions(action1, action2, ..., actionN)

Create your actions from a list of strings as `arguments`.

_MyActions.js_
```js
import {createActions} from 'fluxury';

export default createActions('INC', 'DEC', 'SET')
```

This returns a key mirrored object. The key and the value are equal. It is a useful JS hack.

```js
{
  INC: 'INC',
  DEC: 'DEC',
  SET: 'SET'
}
```

To use the action in a React component:

```js
import {INC} from './MyActions'

var React = require('react');
var {dispatch} = require('fluxury');
var PropTypes = React.PropTypes;

var MyComponent = React.createClass({

  handleClick: function() {
    /* Call dispatch to submit the action to the stores */
    dispatch(INC)
  },

  render: function() {
    return (
      <button onClick={this.handleClick}>+1</button>
    );
  }

});

module.exports = MyComponent;

```

3. createStore(name, initialState, reducer[ , queries, waitFor])

Create a new store with a name, initialState, reducer and optionally an object with queries and an array with dispatch tokens sent to waitFor.

```js
import {INC} from './MyActions';
import {createStore} from 'fluxury';

export default createStore('CountStore', 0, function(state, action) {
  if (action.type === INC) {
    return state + 1;
  }
  return state;
}, {
  getCount: (state) => state // state is the count itself!
});
```

Perhaps you prefer the classic switch case form:

```js
import {INC} from './MyActions'
import {createStore} from 'fluxury';

export default createStore('CountStore', 0, (state, action) => {
  switch (action.type)
  case INC:
    return state + 1;
  default:
    return state;
})
```

In this example you can make them both disappear:

```js
import {INC} from './MyActions'
import {createStore} from 'fluxury';

export default createStore('CountStore', 0, function(state, action) {
    return state + (action.type === INC ? 1 : 0);
})
```

Store Properties and Methods

name	comment
name	The name supplied when creating the store
dispatchToken	A number used with waitFor
addListener	A function to add a callback for events
getState	A function that returns the current state
queries	An object with functions that accept state
waitFor	The array passed into createStore

Put it all together

var React = require('react');
var {dispatch, createStore, createActions} = require('fluxury');
var {INC, DEC} = createActions('INC', 'DEC');

var countStore = createStore('CountStore', 0, function(state, action) {
  switch (action.type) {
    case INC:
      return state+1;
    case DEC:
      return state-1;
    default:
      return state;
  }
});

var MyComponent = React.createClass({

  componentDidMount: function() {
    this.token = countStore.addListener( this.handleStoreChange );
  },

  componentWillUnmount: function() {
    this.token.remove();
  },

  handleStoreChange: function() {
    this.setState({ count: countStore.getState() })
  },

  handleUpClick: function() {
    /* Call dispatch to submit the action to the stores */
    dispatch(INC)
  },

  handleDownClick: function() {
    /* Call dispatch to submit the action to the stores */
    dispatch(DEC)
  },

  render: function() {
    return (
      <div>
        <p>{this.state.count}</p>
        <button onClick={this.handleUpClick}>+1</button>
        <button onClick={this.handleDownClick}>-1</button>
      </div>
    );
  }

});

module.exports = MyComponent;

MapStore with defensive copies

A simple store that accumulates data on each SET action.

var {dispatch, createStore, createActions } = require('fluxury');
var {SET} = createActions('SET');

var store = createStore('MapStore', {}, function(state, action) {
  switch (action.type) {
    case SET:
      // combine both objects into a single new object
      return Object.assign({}, state, action.data)
    default:
      return state;
  }
}, {
  getStates: (state) => state.states,
  getPrograms: (state) => state.programs,
  getSelectedState: (state) => state.selectedState
});

dispatch(SET, { states: ['CA', 'OR', 'WA'] })
// store.queries.getStates() => { states: ['CA', 'OR', 'WA']  }

dispatch(SET, { programs: [{ name: 'A', states: ['CA']}] })
// store.queries.getPrograms() => { programs: [{ name: 'A', states: ['CA']}] }

dispatch(SET, { selectedState: 'CA' })
// store.queries.getSelectedState() => 'CA'

// store.getState() => { states: ['CA', 'OR', 'WA'], { states: ['CA', 'OR', 'WA'], programs: [{ name: 'A', states: ['CA']}] }, selectedState: 'CA' }

MapStore with Immutable data structures

Here is a similar MapStore with Immutable.js.

var {dispatch, createStore, createActions } = require('fluxury');
var {SET, DELETE} = createActions('SET', 'DELETE');
var {Map} = require('Immutable');

var store = createStore('MapStore', Map(), function(state, action) {
  t.plan(8)
  switch (action.type) {
    case SET:
      // combine both objects into a single new object
      return state.merge(action.data);
    default:
      return state;
  }
}, {
  get: (state, param) => state.get(param),
  has: (state, param) => state.has(param),
  includes: (state, param) => state.includes(param),
  first: (state) => state.first(),
  last: (state) => state.last(),
  all: (state) => state.toJS(),
});

Example Applications

CSV File Viewer