export default withTheme(DemoBox);
`

In your app

`jsx
import React from 'react';
import { ThemeProvider } from 'theming';
import DemoBox from './components/DemoBox'

const theme = {
color: 'black',
background: 'white',
};

const App = () => (

{/ { color: 'black', background: 'white' } /}

)

export default App;
`

Playground demo

Be our guest, play with theming in this webpackbin:
https://www.webpackbin.com/bins/-Km8TglfWP84oYhDquT1

![theming](https://www.webpackbin.com/bins/-Km8TglfWP84oYhDquT1)

Motivation

These components are enabling seamless theming for your react applications. And as far as you dont want to pass theme object to each and every component. Thats why you want to use context. But as far context feature is _experimental API and it is likely to break in future releases of React_ you don't want to use it directly. Here theming comes to play.

> If you insist on using context despite these warnings, try to isolate your use of context to a small area and avoid using the context API directly when possible so that it's easier to upgrade when the API changes.
>
> If you insist on using context despite these warnings, try to isolate your use of context to a small area and avoid using the context API directly when possible so that it's easier to upgrade when the API changes.
> — Context, React documentation

Regarding _isolation your use of context to a small area_ and _small areas__ in particular our very own react prophet Dan Abramov have a thing to say:

> Should I use React unstable “context” feature?
>
> — Dan Abramov @dan_abramov on Twitter

So you are fine to use context for theming. theming package provides everything you need to do that:
* ThemeProvider allows you to pass and update theme through context down react tree.
* withTheme allows you to receive theme and its updates in your components as a theme prop.
* createTheming allows you to integrate theming into your CSSinJS library with custom channel (if you need custom one).

API

$3

Theming package by default uses this string as a name of the field in context (hence contextTypes and childContextTypes). If you want to build your own components on top of theming, it might be a good idea to not rely on hard coded value, but instead import this value from the package.

`js
import { channel } from 'theming';

console.log(channel); '__THEMING__';
`

$3

React High-Order component, which passes theme object down the react tree by context.

`jsx
import { ThemeProvider } from 'theming';
const theme = { /…/ };




`

#### props

##### props.theme

Required
Type: Object, Function

If its Object and its root ThemeProvider then its intact and being passed down the react tree.

`jsx
const theme = { themed: true };


{/ { themed: true } /}

`

If its Object and its nested ThemeProvider then its being merged with theme from parent ThemeProvider and passed down to the react tree.

`jsx
const theme = { themed: true };
const patch = { merged: true };



{/ { themed: true, merged: true } /}


`

If its Function and its nested ThemeProvider then its being applied to the theme from parent ThemeProvider. if result is an Object it will be passed down to the react tree, throws otherwise.

`jsx
const theme = { themed: true };
const augment = outerTheme =>
Object.assign({}, outerTheme, { augmented: true });



{/ { themed: true, augmented: true } /}


`

##### props.children

Required
Type: PropTypes.element

ThemeProvider uses React.Children.only in render, which returns the only child in children. Throws otherwise.

$3

React High-Order component, which maps context to theme prop.

#### component

Required
Type: PropTypes.element

You need to have ThemeProvider with a theme somewhere upper the react tree, after that wrap your component in withTheme and your component will get theme as a prop. withTheme will handle initial theme object as well as theme updates.

PS. It doesnt break if you have PureComponent somewhere in between your ThemeProvider and withTheme (i have tests for that).

Usage with Component:

`jsx
import React from 'react';
import { withTheme } from 'theming';

const DemoBox = props => {
console.log(props.theme);
return (