type SizeUnion =
  | 'title1'
  | 'title2'
  | 'title3'
  | 'headline'
  | 'subhead'
  | 'caption1'
  | 'caption2'
  | 'body1'
  | 'callout'
  | 'footnote1'
  | 'footnote2'
  | 'instruction1';
type SizeMap = Record<SizeUnion, string>;

  private _sizeMap: SizeMap = {
    title1: 'h1',
    title2: 'h2',
    title3: 'h3',
    headline: 'h4',
    subhead: 'h5',
    caption1: 'p',
    caption2: 'p',
    body1: 'p',
    callout: 'p',
    footnote1: 'p',
    footnote2: 'p',
    instruction1: 'p',
  };