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flux

An application architecture based on a unidirectional data flow

  • 4.0.4
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What is flux?

Flux is an application architecture for building client-side web applications. It complements React's composable view components by utilizing a unidirectional data flow. This makes it easier to reason about your application and helps you avoid complex state management issues.

What are flux's main functionalities?

Dispatcher

The Dispatcher is a central hub that manages all data flow in a Flux application. It receives actions and dispatches them to the appropriate stores.

const { Dispatcher } = require('flux');
const dispatcher = new Dispatcher();
dispatcher.register((payload) => {
  console.log('Received payload:', payload);
});
dispatcher.dispatch({ type: 'ACTION_TYPE', data: 'sample data' });

Store

Stores contain the application state and logic. They register with the Dispatcher to receive actions and update their state accordingly. They also emit change events to notify views of state changes.

const { Dispatcher } = require('flux');
const EventEmitter = require('events').EventEmitter;
const dispatcher = new Dispatcher();
class Store extends EventEmitter {
  constructor() {
    super();
    this.data = null;
    dispatcher.register(this.handleAction.bind(this));
  }
  handleAction(action) {
    if (action.type === 'ACTION_TYPE') {
      this.data = action.data;
      this.emit('change');
    }
  }
  getData() {
    return this.data;
  }
}
const store = new Store();
store.on('change', () => {
  console.log('Store changed:', store.getData());
});
dispatcher.dispatch({ type: 'ACTION_TYPE', data: 'sample data' });

Action

Actions are simple objects that contain new data and a type property. They are dispatched to the Dispatcher, which then forwards them to the appropriate stores.

const { Dispatcher } = require('flux');
const dispatcher = new Dispatcher();
const action = {
  type: 'ACTION_TYPE',
  data: 'sample data'
};
dispatcher.dispatch(action);

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Package last updated on 21 Mar 2023

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