import type { Stats } from 'node:fs';
export declare class PrivateArtifactHelperError extends Error {
    readonly code: string | undefined;
    readonly errno: number | undefined;
    constructor(message: string, code: string | undefined, errno: number | undefined);
}
export interface SerializedPrivateArtifactIdentity {
    dev: string;
    ino: string;
}
export declare function serializePrivateArtifactIdentity(stat: Stats): SerializedPrivateArtifactIdentity;
export declare function assertPrivateArtifactImmediateChild(parentPath: string, childPath: string): string;
export declare function runPrivateArtifactHelper(script: string, request: string, cwd: string, failureMessage: string): string;
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