How to Extend Styles of React Component Using styled-components?

If you wish to style your own existing (or any third-party) React component, then you can simply use the styled-components' styled() constructor. This works as long as the React component you're styling attaches the passed className prop (or style prop, if you're using react-native) to the DOM element.

Consider for example the following unstyled Button component:

// Button.jsx
const Button = ({ className, children }) => (
  <button className={className}>

export default Button;

You can extend styling of this component with styled-components, for example, like so:

// PrimaryButton.jsx
import styled from 'styled-components';
import Button from 'Button';

const PrimaryButton = styled(Button)`
  color: white;
  background-color: blue;

export default PrimaryButton;

You can use these buttons, for example, in the following way:

// Foo.jsx
import Button from 'Button';
import PrimaryButton from 'PrimaryButton';

const Foo = () => (

export default Foo;

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