luhn-generator/update/node_modules/rxjs/src/internal/testing/SubscriptionLog.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

export class SubscriptionLog {
  constructor(public subscribedFrame: number,
              public unsubscribedFrame: number = Number.POSITIVE_INFINITY) {
  }
}