Function makeNormalizer

src/matches.ts:89–112

* Constructs a normalizer to pass to functions in matches.js * @param {boolean|undefined} trim The user-specified value for `trim`, without * any defaulting having been applied * @param {boolean|undefined} collapseWhitespace The user-specified value for * `collapseWhitespace`, without any defaul

({
  trim,
  collapseWhitespace,
  normalizer,
}: NormalizerOptions)

 */

function makeNormalizer({
  trim,
  collapseWhitespace,
  normalizer,
}: NormalizerOptions) {
  if (!normalizer) {
    // No custom normalizer specified. Just use default.
    return getDefaultNormalizer({trim, collapseWhitespace})
  }

  if (
    typeof trim !== 'undefined' ||
    typeof collapseWhitespace !== 'undefined'
  ) {
    // They've also specified a value for trim or collapseWhitespace
    throw new Error(
      'trim and collapseWhitespace are not supported with a normalizer. ' +
        'If you want to use the default trim and collapseWhitespace logic in your normalizer, ' +
        'use "getDefaultNormalizer({trim, collapseWhitespace})" and compose that into your normalizer',
    )
  }

  return normalizer
}

function matchRegExp(matcher: RegExp, text: string) {
  const match = matcher.test(text)