import { ChildProcess, SpawnOptions } from "child_process";
import { StreamDispatcher } from "@facetlayer/streams";
export type { SpawnOptions as SubprocessOptions } from "child_process";
interface SetupOptions {
    enableOutputBuffering?: boolean;
}
export declare class Subprocess {
    proc: ChildProcess;
    command: string[];
    setupOptions: SetupOptions;
    options: SpawnOptions;
    stdoutListeners?: StreamDispatcher<string>;
    stderrListeners?: StreamDispatcher<string>;
    private stdout;
    private stderr;
    startedPromise?: Promise<void>;
    startedPromiseResolve?: () => void;
    startedPromiseReject?: (error: Error) => void;
    exitPromise?: Promise<number>;
    exitPromiseResolve?: (exitCode: number) => void;
    hasStarted: boolean;
    hasFailed: Error | null;
    hasExited: boolean;
    exitCode: number | null;
    constructor(setupOptions?: SetupOptions);
    spawn(command: string, args?: string[], options?: SpawnOptions): void;
    onStdout(listener: (line: string) => void): void;
    onStderr(listener: (line: string) => void): void;
    kill(): void;
    waitForStart(): Promise<void>;
    waitForExit(): Promise<number>;
    getStdout(): string[];
    getStderr(): string[];
}