luhn-generator/update/node_modules/rxjs/src/internal/symbol/rxSubscriber.ts

A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm

/** @deprecated do not use, this is no longer checked by RxJS internals */
export const rxSubscriber = (() =>
  typeof Symbol === 'function'
    ? Symbol('rxSubscriber')
    : '@@rxSubscriber_' + Math.random())();

/**
 * @deprecated use rxSubscriber instead
 */
export const $$rxSubscriber = rxSubscriber;