Installation

Depending on your preference, run one of the following in your terminal:

# With Yarn
yarn add @sumup/design-tokens

# With npm
npm install @sumup/design-tokens

Usage

The package currently exports a single light theme that is meant to be used with SumUp's React component library, Circuit UI. Pass the theme to Emotion's ThemeProvider:

import { light } from '@sumup/design-tokens';
import { ThemeProvider } from '@emotion/react';
import styled from '@emotion/styled';

const Bold = styled.strong`
  font-weight: ${(p) => p.theme.fontWeight.bold};
`;

const App = () => (
  <ThemeProvider theme={light}>
    <Bold>This styled component has access to the theme.</Bold>
  </ThemeProvider>
);

The theme is a plain JavaScript object, so you can use it in other ways, too.

With prop types

The package exports a themePropType which can be used to check the theme prop:

import PropTypes from 'prop-types';
import { withTheme } from '@emotion/react';
import { themePropType } from '@sumup/design-tokens';

function ComponentWithInlineStyles({ theme, label }) {
  return <div style={{ color: theme.colors.p500 }}>{label}</div>;
}

ComponentWithInlineStyles.propTypes = {
  theme: themePropType.isRequired,
  label: PropTypes.string,
};

export default function withTheme(ComponentWithInlineStyles);

With TypeScript

The package exports a Theme interface which can be used to type Emotion's styled function. Create a custom styled instance as described in the Emotion docs:

import styled, { CreateStyled } from '@emotion/styled';
import { Theme } from '@sumup/design-tokens';

export default styled as CreateStyled<Theme>;