/** @type {Record<string, Array<string> | string | null>} */
export const schema = {
  accept: 'input',
  className: null,
  dropzone: null,
  htmlFor: 'output',
  headers: ['td', 'th'],
  itemProp: null,
  itemRef: null,
  itemType: null,
  ping: ['a', 'area'],
  rel: ['a', 'area', 'link'],
  sandbox: 'iframe',
  sizes: 'link'
}