Function toLineHeight

src/helpers/helpers.options.ts:22–41

(value: number | string, size: number)

 * @since 2.7.0
 */
export function toLineHeight(value: number | string, size: number): number {
  const matches = ('' + value).match(LINE_HEIGHT);
  if (!matches || matches[1] === 'normal') {
    return size * 1.2;
  }

  value = +matches[2];

  switch (matches[3]) {
    case 'px':
      return value;
    case '%':
      value /= 100;
      break;
    default:
      break;
  }

  return size * value;
}

const numberOrZero = (v: unknown) => +v || 0;