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import { neverAbortedSignal } from './common/abort';import { ExecuteWrapper } from './common/Executor';import { IDefaultPolicyContext, IPolicy } from './Policy';
export class FallbackPolicy<AltReturn> implements IPolicy<IDefaultPolicyContext, AltReturn> {  declare readonly _altReturn: AltReturn;
  /**   * @inheritdoc   */  public readonly onSuccess = this.executor.onSuccess;
  /**   * @inheritdoc   */  public readonly onFailure = this.executor.onFailure;
  constructor(private readonly executor: ExecuteWrapper, private readonly value: () => AltReturn) {}
  /**   * Executes the given function.   * @param fn Function to execute.   * @returns The function result or fallback value.   */  public async execute<T>(    fn: (context: IDefaultPolicyContext) => PromiseLike<T> | T,    signal = neverAbortedSignal,  ): Promise<T | AltReturn> {    const result = await this.executor.invoke(fn, { signal });    if ('success' in result) {      return result.success;    }
    return this.value();  }}