/**
 * HTML URL properties.
 *
 * Each key is a property name and each value is a list of tag names it applies
 * to or `null` if it applies to all elements.
 *
 * @type {Record<string, Array<string> | null>}
 */
export const urlAttributes = {
  action: ['form'],
  cite: ['blockquote', 'del', 'ins', 'q'],
  data: ['object'],
  formAction: ['button', 'input'],
  href: ['a', 'area', 'base', 'link'],
  icon: ['menuitem'],
  itemId: null,
  manifest: ['html'],
  ping: ['a', 'area'],
  poster: ['video'],
  src: [
    'audio',
    'embed',
    'iframe',
    'img',
    'input',
    'script',
    'source',
    'track',
    'video'
  ]
}