import * as child from 'child_process';
import * as pty from 'node-pty';
/**
 * IProcess provides an interface to work with a subprocess.
 */
export interface IProcess {
    /**
     * Register a callback to be invoked when a chunk is written to stdout.
     */
    onStdout(callback: (chunk: Buffer) => void): void;
    /**
     * Register a callback to be invoked when a chunk is written to stderr.
     */
    onStderr(callback: (chunk: Buffer) => void): void;
    /**
     * Register a callback to be invoked when the process exists.
     */
    onExit(callback: (exitCode: number) => void): void;
    /**
     * Register a callback to be invoked if the process failed to start.
     */
    onError(callback: (error: Error) => void): void;
    /**
     * Write the process stdin stream.
     */
    writeStdin(data: string): void;
    /**
     * Singal that no more data will be written to stdin. In non tty process you must
     * call this method to make sure the process exits.
     *
     * @param delay - optional delay in milliseconds before the signal is sent.
     *
     */
    endStdin(delay?: number): void;
}
export declare class Process {
    /**
     * Spawn a process with a TTY attached.
     */
    static spawnTTY(command: string, args: string[], options?: pty.IPtyForkOptions | pty.IWindowsPtyForkOptions): IProcess;
    /**
     * Spawn a process without a forcing a TTY.
     */
    static spawn(command: string, args: string[], options?: child.SpawnOptions): IProcess;
}