import { Stream } from '@facetlayer/streams';
import { SpawnOptions } from 'child_process';
export type ProcessEvent = StdoutEvent | StdoutClosedEvent | StderrEvent | SpawnEvent | SpawnErrorEvent | ExitEvent;
export declare enum ProcessEventType {
    stdout = 1,
    stderr = 2,
    spawn = 3,
    spawn_error = 4,
    stdout_closed = 5,
    exit = 6
}
export interface StdoutEvent {
    type: ProcessEventType.stdout;
    line: string;
}
export interface StdoutClosedEvent {
    type: ProcessEventType.stdout_closed;
}
export interface StderrEvent {
    type: ProcessEventType.stderr;
    line: string;
}
export interface SpawnEvent {
    type: ProcessEventType.spawn;
}
export interface SpawnErrorEvent {
    type: ProcessEventType.spawn_error;
    error: Error;
}
export interface ExitEvent {
    type: ProcessEventType.exit;
    code: number;
}
export interface SpawnOutput {
    output: Stream<ProcessEvent>;
    proc: any;
}
export declare function spawnProcess(command: string, args?: string[], options?: SpawnOptions): SpawnOutput;