Function replacePathSepForRegex

packages/jest-regex-util/src/index.ts:23–31

(string: string)

  string.replaceAll(/[$()*+.?[\\\]^{|}]/g, '\\$&');

export const replacePathSepForRegex = (string: string): string => {
  if (sep === '\\') {
    return string.replaceAll(
      /(\/|(.)?\\(?![$()*+.?[\\\]^{|}]))/g,
      (_match, _, p2) => (p2 && p2 !== '\\' ? `${p2}\\\\` : '\\\\'),
    );
  }
  return string;
};