import { spawn } from "node:child_process";
export type ServeTunnelErrorCode = "HUMANISH_SERVE_TUNNEL_NOT_FOUND" | "HUMANISH_SERVE_TUNNEL_START_FAILED";
export declare class ServeTunnelError extends Error {
    readonly code: ServeTunnelErrorCode;
    constructor(code: ServeTunnelErrorCode, message: string);
}
export interface ServeTunnel {
    url: string;
    close(): Promise<void>;
}
export interface StartNgrokTunnelOptions {
    port: number;
    domain?: string;
    oauthProvider?: "google";
    oauthAllowEmails?: string[];
    oauthAllowDomains?: string[];
    timeoutMs?: number;
    spawnImpl?: typeof spawn;
}
export declare function startNgrokTunnel(options: StartNgrokTunnelOptions): Promise<ServeTunnel>;