// Copyright (c) 2026 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/** Value to reject/throw when an operation was aborted via `AbortSignal` (aligns with `fetch` + `DOMException`). */
export function userAbortReason(signal: AbortSignal): unknown {
  return signal.reason !== undefined
    ? signal.reason
    : new DOMException("The user aborted a request.", "AbortError");
}

export function throwIfAborted(signal?: AbortSignal): void {
  if (!signal?.aborted) return;
  throw userAbortReason(signal);
}
