import type { ResolvedCwd } from './resolveCwds.js';
export interface ProblemDirIsolationCheckResult {
    passed: boolean;
}
/**
 * Check that a judge can run after only the problem directory is copied elsewhere.
 */
export declare function checkProblemDirIsolation(problemDir: string, resolvedCwd: ResolvedCwd, params: unknown): Promise<ProblemDirIsolationCheckResult>;
/**
 * Copy a problem directory into a temporary root, symlinking every ancestor `node_modules` so the
 * copied harness still resolves its imports. Callers must remove the returned `tempRoot`.
 */
export declare function copyProblemDirToTemporaryRoot(problemDir: string): Promise<{
    tempRoot: string;
    copiedProblemDir: string;
}>;
/**
 * Remove a temporary directory even when judged code left permission-locked entries in it (e.g. a
 * mode-000 directory makes a plain `fs.rm` fail with EACCES). Returns whether removal succeeded.
 */
export declare function forciblyRemoveDirectory(dir: string): Promise<boolean>;
/** Synchronous variant of {@link forciblyRemoveDirectory} for signal handlers. */
export declare function forciblyRemoveDirectorySync(dir: string): boolean;