What would you take to build a UI kit from scratch?

To build a UI kit from scratch, I would take:

• Design system: defining color palette, typography, spacing, and styles.
• Components: buttons, forms, cards, modals, etc., implemented as reusable elements.
• Development tools: for example, React or Vue for creating components, Storybook for documentation and visual testing.
• Token system: variables for colors, sizes, and other parameters for easy customization.
• Documentation: describing component usage, examples, and recommendations.

An example of a simple React button component in a UI kit:

const Button = ({ children, onClick, type = 'primary' }) => {
  const className = `btn btn--${type}`;
  return <button className={className} onClick={onClick}>{children}</button>;
};

export default Button;