Create consistent design-system-driven React UI components
Last updated 3 years ago by bebraw .
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$ cnpm install @bebraw/system-components 
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Create consistent design-system-driven React UI components

Built with styled-system & styled-components

Build Status

import system from 'system-components'

// creates a Box with default props tied to your theme
const Box = system({
  p: 2,
  bg: 'blue'


To create a styled-component with default props that hook into styled-system props, pass a plain object as the first argument to the system function.

const Card = system({
  px: 2,
  py: 3,
  borderWidth: 1,
  borderColor: 'lightGray',
  borderRadius: 2

The system function will automatically apply styled-system functions to the underlying styled-component based on the keys of the defaultProps object. System components also add prop type definitions and remove style props from the underlying HTML element.

See the styled-system docs for a complete list of the available style functions.

Add style props without defaultProps

System components can also be created with styled-system props without defining defaultProps.

const Box = system(

This allows for style props to be passed to the component instance:


Using custom functions

Custom style functions can be passed as an argument.

const Box = system(
  props => ({
    height: props.height

Changing the underlying HTML element

System components default to using a <div> as the HTML element. To change the HTML element use the is prop.

const Heading = system({
  is: 'h2',
  m: 0,
  fontSize: 6

Since is is a prop, it can also be passed to the element when used. This is useful for one-off changes to ensure semantic markup.

<Heading is='h1'>

Extending components

System components are styled-components, so any of the built-in methods work as expected, including .extend.

const Text = system({
  fontSize: 2,

const Bold = Text.extend`
  font-weight: bold;

MIT License

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