import { type ChildProcess } from 'node:child_process';
export interface LaunchOptions {
    /** Port for --remote-debugging-port. */
    port: number;
    /** Path to user-data-dir. Created if missing. */
    profileDir: string;
    /** If true, launch without a visible window (--headless=new). Useful
     *  for tests and CI; user-driven flows want it false. */
    headless?: boolean;
}
export declare function defaultProfileDir(): string;
export declare function findChromeBinary(): string;
export declare function launchChrome(opts: LaunchOptions): ChildProcess;
export declare function waitForCdpReady(port: number, timeoutMs?: number): Promise<void>;