Function replace

src/string.ts:37–42

(str: string, substr: string | RegExp, newSubstr: string | StringReplacer)

 * Replace string
 */
export function replace(str: string, substr: string | RegExp, newSubstr: string | StringReplacer) {
  if (typeof newSubstr === 'string') {
    return str.replace(substr, () => { return newSubstr; });
  }
  return str.replace(substr, newSubstr);
}

// original source https://github.com/nodejs/node/blob/v7.5.0/lib/_http_common.js#L300
/**