import type { Session } from '../../../session/session.ts';
import type { BuiltinCall, ExecuteStringFn, Result } from '../types.ts';
/** Parse a GNU timeout duration (float plus optional s/m/h/d). */
export declare function parseDuration(raw: string): number | null;
/**
 * Run `timeout DURATION COMMAND [ARG...]`, killing at the deadline.
 *
 * The inner line is built with shellJoin so already-expanded words
 * survive re-parsing as one token each (GNU timeout execs the command
 * without a shell). On overrun the exit code is 124 like GNU; the
 * inner run's result is abandoned. The inner stdout is drained inside
 * the race so a lazy pipeline cannot run past the deadline. Signal
 * options (-s, -k, --preserve-status) are parsed but rejected: the
 * inner run is a promise, not a process, so there is nothing to
 * signal.
 */
export declare function handleTimeout(executeFn: ExecuteStringFn, args: readonly string[], session: Session): Promise<Result>;
/** The `timeout` arm. */
export declare function timeoutBuiltin(call: BuiltinCall): Promise<Result>;
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