@opengovsg/design-system-react

This design system extends from the wonderful Chakra UI library.

The available components can be viewed at our Storybook

Installing the design system

ChakraUI is a peer dependency of this design system and should be installed alongside this package. The full list of peer dependencies can be found in the package.json.

(You might find that you do not need to install some peer dependencies until you need them.)

$ npm install --save @opengovsg/design-system-react @chakra-ui/react
# or
$ yarn add @opengovsg/design-system-react @chakra-ui/react

Getting set up

To start using the components, please follow these steps:

1. Wrap your application in a ThemeProvider provided by @opengovsg/design-system-react.

There is also an optional (though strongly recommended) font package inter-ui that provides the font that is used throughout the design system. If using code fonts, the IBM Plex Mono package is also recommended.

This CSS file(s) should be imported in the root of your application once:

import 'inter-ui/inter.css' // Strongly recommended.
import '@fontsource/ibm-plex-mono' // Import if using code textStyles.

import { ThemeProvider } from '@opengovsg/design-system-react'

const App = ({ children }) => (
  <ThemeProvider>
    <ColorModeProvider>{children}</ColorModeProvider>
  </ThemeProvider>
)

ColorModeProvider is a context that provides light mode and dark mode values to the components. It also comes with a function to toggle between light/dark mode.

However, this design system current does not support dark mode for now, and as such do not recommend using ColorModeProvider.

3. Now you can start using components like so:

import { Button } from '@opengovsg/design-system-react'

const App = () => <Button>Click me</Button>

This design system does not provide the full range of components that ChakraUI provides. As such, consume components from the Chakra UI library as needed. They should work in synergy.

import { Box } from '@chakra-ui/react'
import { Button } from '@opengovsg/design-system-react'

const Example = () => (
  <Box>
    <Button>Will work side by side with ChakraUI</Button>
  </Box>
)

Adding types for TypeScript

Using @chakra-ui/cli, you can also generate types for the design system to provide autocomplete for your TypeScript code.

If you are extending the theme (you used extendTheme):

npx @chakra-ui/cli tokens <path/to/your/theme.(js|ts)>

If generating for the base design system:

npx chakra-cli tokens node_modules/@opengovsg/design-system-react/build/main/theme/theme.js

Note 🚨: If you delete the node_modules directory, you'll need to re-run the command to get proper typings again.

For convenience, you can add a postinstall script to your package.json, so you don't have to think about this every time you re-install your dependencies.

"scripts": {
  "gen:theme-typings": "chakra-cli tokens node_modules/@opengovsg/design-system-react/build/main/theme/theme.js",
  "postinstall": "npm run gen:theme-typings"
}

Common problems

### I am seeing

```bash
Module not found: Can't resolve 'libphonenumber-js/examples.mobile.json'

libphonenumber-js is a peer dependency of this design system, and version 8 is automatically installed if your npm version is >= 7

If you're on npm version 4 to 6, install libphonenumber-js explicitly by executing the following command.

$ npm install libphonenumber-js

I am seeing

When running your build script with tsc:

./../node_modules/@chakra-ui/theme/dist/index.d.ts:1636:25 - error TS2411: Property '_dark' of type 'undefined' is not assignable to 'string' index type 'string'.

1636                         _dark?: undefined;
                             ~~~~~

../../node_modules/@chakra-ui/theme/dist/index.d.ts:1637:25 - error TS2411: Property 'opacity' of type 'undefined' is not assignable to 'string' index type 'string'.

1637                         opacity?: undefined;
                             ~~~~~~~

../../node_modules/@chakra-ui/theme/dist/index.d.ts:1638:25 - error TS2411: Property 'cursor' of type 'undefined' is not assignable to 'string' index type 'string'.

1638                         cursor?: undefined;
                             ~~~~~~

To fix this, ensure that skipLibCheck is set to false in your tsconfig.json

Publishing a new version

In the react directory:

# <version> examples: 1.0.1, 1.0.1-alpha.0, 1.0.1-beta.3
$ git checkout -b release-v<version>
$ npm version <version>
$ git add package.json package-lock.json
$ git commit -m "build: update version to v<version>"
$ git tag v<version>
$ git push --set-upstream origin release-v<version> # push branch
$ git push origin v<version> # push tag

Open 2 PRs:

• release-v<version> -> alpha / beta / latest - once this PR is merged, the version will be published to the respective npm tag automatically
• release-v<version> -> main - to keep our main branch up-to-date with releases

Lastly, create a new release on GitHub for the new tag.

Further reading

As this design system is built on top of ChakraUI, it is (hopefully) fully compatible with ChakraUI's usage. Read ChakraUI's documentation for all the available props and usage examples.