function parseAnchorOption(anchor) {
  let horizontal = anchor.match(/left|center|right/gi) || [];
  horizontal = horizontal.length === 0 ? 'left' : horizontal[0];

  let vertical = anchor.match(/baseline|top|bottom|middle/gi) || [];
  vertical = vertical.length === 0 ? 'baseline' : vertical[0];

  return { horizontal, vertical };
}