import type { EngineIdentity } from "./local-api/engine-server.js";
import { type LocalIpcEndpoint } from "./platform/ipc.js";
import { type EngineProcessState } from "./process-state.js";
export interface RunningEngine {
    state: EngineProcessState;
    identity: EngineIdentity;
}
export interface LaunchEngineOptions {
    niubotHome: string;
    engineEntry: string;
    runtimePath: string;
    logFile: string;
    version: string;
    nodePath?: string;
    runtimeMode?: string;
    env?: NodeJS.ProcessEnv;
    beforeLaunch?: () => void;
}
export interface LaunchedEngine {
    state: EngineProcessState;
    endpoint: LocalIpcEndpoint;
}
export interface StopEngineOptions {
    /** Keep the caller alive when it is a Windows descendant of the Engine. */
    preserveDescendants?: boolean;
}
export declare function inspectRunningEngine(niubotHome: string): Promise<RunningEngine | undefined>;
export declare function launchDetachedEngine(options: LaunchEngineOptions): LaunchedEngine;
export declare function stopEngine(niubotHome: string, options?: StopEngineOptions): Promise<{
    stopped: boolean;
    pid?: number;
}>;
export declare function verifyLegacyEngineProcess(pid: number, niubotHome: string): string;