Function clsx

packages/dev/docs/src/Layout.js:57–62

(
        typographyStyles['spectrum-Heading1--display'],
        typographyStyles['spectrum-Article'],
        docStyles['articleHeader']
      )

    <h1
      {...props}
      className={clsx(
        typographyStyles['spectrum-Heading1--display'],
        typographyStyles['spectrum-Article'],
        docStyles['articleHeader']
      )}>
      {children}
    </h1>
  ),
  h2: ({children, ...props}) => (