/// <reference types="node" />
/// <reference types="node" />
import { AutoDetectedUserInstructions, ImageType } from "../types";
import { PluginOptions } from "../types";
import { ExtractAction, ExtractedLayers, ExtractionResult, ImageConfig, SymlinkMap } from "./types";
export { InvalidArchiveError } from "./generic-archive-extractor";
/**
 * Given a path on the file system to a image archive, open it up to inspect the layers
 * and look for specific files. File content can be transformed with a custom callback function if needed.
 * @param fileSystemPath Path to an existing archive.
 * @param extractActions This denotes a file pattern to look for and how to transform the file if it is found.
 * By default the file is returned raw if no processing is desired.
 */
export declare function extractImageContent(imageType: ImageType, fileSystemPath: string, extractActions: ExtractAction[], options: Partial<PluginOptions>): Promise<ExtractionResult>;
export declare function getRootFsLayersFromConfig(imageConfig: ImageConfig): string[];
export declare function getPlatformFromConfig(imageConfig: ImageConfig): string | undefined;
export declare function getDetectedLayersInfoFromConfig(imageConfig: any): AutoDetectedUserInstructions;
export declare function getUserInstructionLayersFromConfig(imageConfig: any): any;
/**
 * Merge per-layer symlink maps into a single view of the running container.
 * Layers arrive newest-first (see generic-archive / OCI extractors) and the
 * first layer seen wins, mirroring layersWithLatestFileModifications. A
 * whiteout entry only hides paths in lower (older) layers; a whiteout and an
 * entry for the same path may coexist within one layer (e.g. a directory
 * replaced by a symlink), in which case that layer's own entry survives.
 */
export declare function symlinksWithLatestModifications(symlinkLayers?: SymlinkMap[], fileLayers?: ExtractedLayers[]): SymlinkMap | undefined;
export { isWhitedOutFile } from "./layer";
export declare function getContentAsBuffer(extractedLayers: ExtractedLayers, extractAction: ExtractAction): Buffer | undefined;
export declare function getContentAsString(extractedLayers: ExtractedLayers, extractAction: ExtractAction): string | undefined;