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React-theme-provider — the easiest way to use multiple themes in your app

Jakub Kłobus
2018-06-04

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Have you ever wanted to add theming possibilities to your application? To introduce to users an option to choose their favourite app “look and feel” without struggling with React context or huge singletons with theming data.

Now it’s possible with <rte-code>react-theme-provider<rte-code>! And let me tell you more… it’s possible in both <rte-code>React<rte-code> and <rte-code>React Native<rte-code>.

Origins of <cyan>react-theme-provider<cyan>

<rte-code>react-theme-provider<rte-code> started its life as a local module in react-native-paper and react-native-ios-kit (BTW I encourage you to check out those libs). It was duplicated so we decided to make a totally separated library with both React Native and React support. We’ve added some additional features, wrapped it into nice API, added some tests, and voila!

How to start?

Just install <rte-code>@callstack/react-theme-provider<rte-code> package from <rte-code>npm<rte-code> and import <rte-code>ThemeProvider<rte-code> component into your main JS file. After that simply wrap your code into <rte-code>ThemeProvider<rte-code> component and pass your theme as a <rte-code>theme<rte-code> prop. Just like this:

To change theme of the application just change the value of the <rte-code>theme<rte-code>prop.

Ok, so we provided our — for sure beautiful — theme. Now it’s time to use it in our components. It is possible thanks to <rte-code>withTheme<rte-code> Higher Order Component. Wrap your component with it and start using theme data injected into the<rte-code>theme<rte-code> prop.

Demo time

You can try our demo here:

But wait… there is more!

You can use <rte-code>createTheming<rte-code> function to add multiple ThemeProviers for one application or inject a default theme. But I’m going to stop here and invite you to check out our documentation.
If you have any troubles or ideas for improvements, feel free to open an issue on our repository.

Big thanks to Satyajit Sahoo who is the father of this project and main author of the code!

Author:
Jakub Kłobus
Software developer working at Callstack since the beginning. After mastering web, he moved to React Native. Fanboy of ReasonML and functional programming.
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