export function stringNormalize(string: string): string {
  // in order: double quotation marks, single quotation marks and apostrophes, commas
  return string.replace(/[\u201C\u201D\u02DD\u0308¨]/g, '\u0022').replace(/[\u00B4\u0060\u2018\u2019\u0301\u02BB\u02C8]/g, '\u0027').replace(/[\u02CC\u201A\uFF0C、]/g, '\u002C');
};