export interface ExtractOptions {
    strip?: number;
    filter?: (path: string) => boolean;
    overwrite?: boolean;
}
export declare class PackageExtractor {
    extractTarGz(filePath: string, targetDir: string, options?: ExtractOptions): Promise<void>;
    extractZip(filePath: string, targetDir: string, options?: ExtractOptions): Promise<void>;
    extract(filePath: string, targetDir: string, options?: ExtractOptions): Promise<void>;
    extractPackageJson(tarballPath: string): Promise<any>;
    verifyIntegrity(filePath: string, expectedIntegrity?: string, expectedShasum?: string): Promise<boolean>;
    createTarGz(sourceDir: string, outputPath: string, options?: {
        portable?: boolean;
    }): Promise<void>;
    listContents(filePath: string): Promise<string[]>;
    private walkDir;
}
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