luhn-generator/update/node_modules/rxjs/src/internal/util/isIterable.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

import { iterator as Symbol_iterator } from '../symbol/iterator';

/** Identifies an input as being an Iterable */
export function isIterable(input: any): input is Iterable<any> {
  return input && typeof input[Symbol_iterator] === 'function';
}