// @flow
import type { Styles } from '../types/style'

/**
 * CSS to hide content visually but remain accessible to screen readers.
 * from [HTML5 Boilerplate](https://github.com/h5bp/html5-boilerplate/blob/9a176f57af1cfe8ec70300da4621fb9b07e5fa31/src/css/main.css#L121)
 *
 * @example
 * // Styles as object usage
 * const styles = {
 *   ...hideVisually(),
 * }
 *
 * // styled-components usage
 * const div = styled.div`
 *   ${hideVisually()};
 * `
 *
 * // CSS as JS Output
 *
 * 'div': {
 *   'border': '0',
 *   'clip': 'rect(0 0 0 0)',
 *   'height': '1px',
 *   'margin': '-1px',
 *   'overflow': 'hidden',
 *   'padding': '0',
 *   'position': 'absolute',
 *   'whiteSpace': 'nowrap',
 *   'width': '1px',
 * }
 */
export default function hideVisually(): Styles {
  // Note: The use of `clip-path` causes performance degredation on scroll events in Chrome.
  // For more information, see:
  // * h5bp/html5-boilerplate#2021
  // * zurb/foundation-sites#10914
  // * twbs/bootstrap#24906
  return {
    border: '0',
    clip: 'rect(0 0 0 0)',
    // clipPath: 'inset(50%)',
    height: '1px',
    margin: '-1px',
    overflow: 'hidden',
    padding: '0',
    position: 'absolute',
    whiteSpace: 'nowrap',
    width: '1px',
  }
}

// @flow
import type { Styles } from '../types/style'

/**
 * CSS to hide content visually but remain accessible to screen readers.
 * from [HTML5 Boilerplate](https://github.com/h5bp/html5-boilerplate/blob/9a176f57af1cfe8ec70300da4621fb9b07e5fa31/src/css/main.css#L121)
 *
 * @example
 * // Styles as object usage
 * const styles = {
 *   ...hideVisually(),
 * }
 *
 * // styled-components usage
 * const div = styled.div`
 *   ${hideVisually()};
 * `
 *
 * // CSS as JS Output
 *
 * 'div': {
 *   'border': '0',
 *   'clip': 'rect(0 0 0 0)',
 *   'height': '1px',
 *   'margin': '-1px',
 *   'overflow': 'hidden',
 *   'padding': '0',
 *   'position': 'absolute',
 *   'whiteSpace': 'nowrap',
 *   'width': '1px',
 * }
 */
export default function hideVisually(): Styles {
  return {
    border: '0',
    clip: 'rect(0 0 0 0)',
    height: '1px',
    margin: '-1px',
    overflow: 'hidden',
    padding: '0',
    position: 'absolute',
    whiteSpace: 'nowrap',
    width: '1px',
  }
}

remove comments for bugfix in hideVisually