Abbrechbare asynchrone Pipeline-Steuerung mittels AbortSignal in Svelte-Zuständen

export function createCancellableTask(asyncFn) {
  let currentController = null;
 
  return async (...args) => {
    if (currentController) {
      currentController.abort('SUPERSEDE');
    }
    currentController = new AbortController();
    const { signal } = currentController;
 
    try {
      return await asyncFn(signal, ...args);
    } catch (err) {
      if (err === 'SUPERSEDE' || signal.aborted) return;
      throw err;
    }
  };
}