import type { SessionRegistrySession, TerminalSessionSignal } from "./registry-types.ts";
export declare const DEFAULT_SIGNAL: TerminalSessionSignal;
/**
 * Escalation signal. On Windows there is no SIGKILL: Node maps any signal but 0
 * to TerminateProcess, and the pty session's own kill path routes it through
 * `taskkill /T /F`, so the forced semantics hold on both platforms.
 */
export declare const FORCE_SIGNAL: TerminalSessionSignal;
export declare function sessionIdPrefix(command: string): string;
export declare function isTerminalSessionExited(session: SessionRegistrySession): boolean;
export declare function stopTerminalSession(session: SessionRegistrySession): Promise<void>;
/**
 * Deliver the forced signal to a session that outlived its stop grace. Returns
 * `false` when the session exposes no way to signal it, so callers can skip a
 * pointless forced-grace wait instead of hanging on an unkillable stub.
 */
export declare function forceKillTerminalSession(session: SessionRegistrySession): Promise<boolean>;
export declare function waitForTerminalSessionExit(session: SessionRegistrySession, graceMs?: number): Promise<boolean>;
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