function isValidMatch()

in js/src/isValidUrl.js [13:22]

• 6 lines of code
• 6 McCabe index (conditional complexity)

function isValidMatch(string, regex, optional) {
  if (!optional) {
    // RegExp["$&"] is the text of the last match
    // blank strings are ok, but are falsy, so we check stringiness instead of truthiness
    return typeof string === 'string' && string.match(regex) && RegExp['$&'] === string;
  }

  // RegExp["$&"] is the text of the last match
  return !string || (string.match(regex) && RegExp['$&'] === string);
}