/**
 * A process target Node can spawn with `shell: false`.
 * The caller appends its own argv after `argsPrefix`.
 */
export interface BrowserLaunch {
    command: string;
    argsPrefix: string[];
}
export interface BrowserLaunchOptions {
    platform?: NodeJS.Platform;
    nodeExecutable?: string;
    lookup?: (command: string, args: string[]) => string;
    fileExists?: (path: string) => boolean;
    readFile?: (path: string) => string;
}
/**
 * Locate a globally installed `agent-browser`.
 * POSIX: the command name itself (spawned without a shell, as before).
 * Windows: a native `.exe`, or `node <entry.js>` behind the npm shim; null when
 * neither can be resolved without a shell.
 */
export declare function resolveAgentBrowserLaunch(options?: BrowserLaunchOptions): BrowserLaunch | null;
/**
 * Locate `npx` for the `npx --yes agent-browser` fallback.
 * POSIX: `npx` itself. Windows: `node <npm>/bin/npx-cli.js`, taken from the
 * running Node's own npm or from the npm that `where.exe npx` points at.
 */
export declare function resolveNpxLaunch(options?: BrowserLaunchOptions): BrowserLaunch | null;
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