import type { PipelineFileSystem } from "./types.js";
export declare function isRecord(value: unknown): value is Record<string, unknown>;
export declare function defineRecordEntry<T>(record: Record<string, T>, key: string, value: T): void;
export declare function isNotFound(error: unknown): boolean;
export declare function readOptionalFile(fs: Pick<PipelineFileSystem, "readFile">, filePath: string): Promise<string | null>;
export declare function assertNotAborted(signal: AbortSignal | undefined): void;
export declare function createAbortError(): Error;