(fn === @undefined)
      fn = noop;
    validateUint32(expected, "expected", !0);
    let context = new CallTrackerContext({
      expected,
      stackTrace: Error(),
      name: fn.name || "calls"
    }), tracked = new Proxy(fn, {
      __proto__: null,
      apply(fn2, thisArg, argList) {
        return context.track(thisArg, argList), fn2.@apply(thisArg, argList);
      }
    });
    return this.#callChecks.add(context), this.#trackedFunctions.set(tracked, context), tracked;
  }
  report() {
    let errors = [];
    for (let context of this.#callChecks) {
      let message = context.report();
      if (message !== @undefined)
        ArrayPrototypePush.@call(errors, message);
    }
    return errors;
  }
  verify() {
    let errors = this.report();
    if (errors.length === 0)
      return;
    let message = errors.length === 1 ? errors[0].message : "Functions were not called the expected number of times";
    throw new AssertionError({
      message,
      details: errors
    });
  }
}
$ = CallTracker;
return $})