import { exec as _exec, SpawnOptionsWithoutStdio } from 'child_process';
export declare const exec: typeof _exec.__promisify__;
export declare function spawn(options: {
    cmd: string;
    args?: string[];
    options?: SpawnOptionsWithoutStdio;
    on_stdout?: (chunk: any) => void;
    on_stderr?: (chunk: any) => void;
    on_error?: (error: any) => void;
}): Promise<unknown>;