import child_process from 'node:child_process';
/**
 * Run an untrusted (submission-derived) command with a timeout. When a judge server delegates
 * untrusted execution via `EXERCODE_SANDBOX_USER` (see `sandboxUser.ts`), the whole command,
 * including `timeout`, runs as the sandbox user so the timer can signal the sandboxed process; a
 * harness-owned watchdog enforces the deadline even if the submission kills its own `timeout`, and
 * leftover sandbox processes (e.g. daemonized children) are killed after every run.
 */
export declare function spawnSyncWithTimeout(command: string, args: readonly string[], options: child_process.SpawnSyncOptionsWithStringEncoding, timeoutSeconds: number): child_process.SpawnSyncReturns<string> & {
    timeSeconds: number;
    memoryBytes: number;
};