react-augment

Augment your React component with multiple Higher Order Components

Installation

npm install react-augment --save

Why

When you're working with Higher Order Components, most general approach to augment a Component is to invoke a HOC and pass the Component as an argument.

import { someHOC } from 'someHOC';

class Example extends Component () {}

export default someHOC(Component);

In case of two or more HOCs, you can set them up in the following way:

import { someHOC } from 'someHOC';
import { someOtherHOC } from 'someOtherHOC';

class Example extends Component () {}

export default someHOC(someOtherHOC(Component));

What react-augment enables you to do is to augment your Component by composing multiple HOCs in a more robust, lexical way.

import { augmentComponent } from 'react-augment';

import { someHOC } from 'someHOC';
import { someOtherHOC } from 'someOtherHOC';

@augmentComponent([
    someHOC,
    someOtherHOC
])
export default class Example extends Component {}

Usage

@augmentComponent

@augmentComponent([HOC, HOC], {})

Params	Type	Description
HOCS	Array	Array of HOCs to be used for augmenting Component.
params	Object	Optional object to be passed as a second argument to the invoking HOC.

Augment

Methods	Description
register	Register your HOCS to be used globally as annotations.
component	No-decorator approach method.
list	Returns all registered HOC annotations.

Augment.register({ 'HOC': HOC })

Params	Type	Description
HOCS	Object	Config object containing HOCs to be annotated. Notice: Config key will be used as annotation.

Augment.component([HOC, HOC], {})

Same as @augmentComponent above

Augment.list()

Example

You'd like to augment your Example component with a HOC that handles navigation and some other HOC.

|-- components/
    |-- Example.js

|-- containers/
    |-- hoc/
        |-- index.js
        |-- useNavigation.js
        |-- someOtherHOC.js

// components/Example.js

export default class Example extends Component {}

// containers/hoc/useNavigation.js

import React, { Component } from 'react';
import { browserHistory } from 'react-router';

/**
 * @description
 * Higher order component
 * Component wrapper augmenter used for navigation
 *
 * @param  {Function} WrappedComponent
 * @param {Object} optionalConfig
 * @return {Object}
 * @public
 */
export const useNavigation = (WrappedComponent, optionalConfig) =>
    class UseNavigation extends Component {

        constructor (props) {
            super(props);
            this.onNavigate = this.onNavigate.bind(this);
        }

        /**
         * @description
         * On navigate to route.
         *
         * @param {String} route
         * @return {Function}
         * @public
         */
        onNavigate (route) {
            return browserHistory.push(route);
        }

        render () {
            return (
                <WrappedComponent { ...this.props } navigate={ this.onNavigate } />
            );
        }
    };

// containers/hoc/index.js

import { useNavigation } from './useNavigation';
import { someOtherHOC } from './someOtherHOC';

export default {
    useNavigation,
    someOtherHOC
};

Import & export

There are two ways you can implement react-augment:

• use @augmentComponent decorator
• use Augment object.

Note: To use a decorator you'll need to install transform-decorators-legacy babel plugin.

Note: Order of the HOC is irrelevant

import { augmentComponent } from 'react-augment';
import HOC from 'containers/hoc';

@augmentComponent([
    HOC.useNavigation,
    HOC.someOtherHOC
], { optional: 'config that will be passed to a HOC as a second argument' })
export default class Example extends Component {}

import { Augment } from 'react-augment';
import HOC from 'containers/hoc';

class Example extends Component {}

export default Augment.component(Example, [
    HOC.useNavigation,
    HOC.someOtherHOC
], { optional: 'config will be passed as a second argument to a HOC component' });

Annotation approach

You can register all your HOCs' namespaces at one of the main component wrappers (such as App)

import { Augment } from 'react-augment';
import HOC from 'containers/hoc';

Augment.register(HOC);

This way you can supply the array of your HOC namespaces so you don't have to import them in each of the components.

instead of

[
    HOC.useNavigation,
    HOC.someOtherHOC
]

use

[
    'useNavigation',
    'someOtherHOC'
]

Development

Prerequisites

Node.js >= v4 must be installed.

• Running npm install in the components's root directory will install everything you need for development.

• npm start will run a development server with the component's demo app at http://localhost:3000 with hot module reloading.

Running Tests

• npm test will run the tests once.

• npm run test:coverage will run the tests and produce a coverage report in coverage/.

• npm run test:watch will run the tests on every change.

Building

• npm run build will build the component for publishing to npm and also bundle the demo app.

• npm run clean will delete built resources.

License

MIT © David Lazic