import { type FileStat, PathSpec } from '../../../../types.ts';
export type StatDoor = (p: PathSpec) => Promise<FileStat>;
export type MkdirDoor = (p: PathSpec, parents?: boolean) => Promise<void>;
/**
 * Where extraction lands: the explicit operand, else the cwd.
 *
 * The explicit operand is tar's last -C or unzip's -d; both arrive as
 * resolved virtual-path strings in the TypeScript flag bag, and the cwd
 * is virtual too, so no per-door-space split exists here the way it
 * does in Python (whose accessor doors speak mount-relative paths).
 */
export declare function extractDest(explicit: string | null, cwd: string): string;
export declare function flatPathSpec(virtual: string): PathSpec;
/**
 * Create one directory chain top-down, skipping what exists.
 *
 * The dispatch mkdir op is single-level on most backends (the
 * `mkdirParents` knob is a per-backend exception), so extraction walks
 * the chain itself the way relay cp does: probe, then create only what
 * is missing, memoized per run so an archive of many files stats each
 * ancestor once.
 */
export declare function ensureDir(dirPath: string, toSpec: (virtual: string) => PathSpec, mkdir: MkdirDoor, stat: StatDoor, made: Set<string>): Promise<void>;
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