/**
 * Leaper Agent – Browser Tool
 *
 * Browser automation with Playwright (headless Chromium) and a fetch fallback.
 * Translates Python tools/browser_tool.py (simplified, no cloud providers).
 */
export interface BrowserSession {
    id: string;
    url: string;
    title: string;
    startedAt: Date;
    active: boolean;
}
export interface BrowserResult {
    success: boolean;
    content?: string;
    screenshotBase64?: string;
    error?: string;
    url?: string;
    title?: string;
}
export interface NavigateOptions {
    /** Milliseconds. Default: 30 000. */
    timeout?: number;
    waitUntil?: 'load' | 'domcontentloaded' | 'networkidle';
}
export interface ExtractOptions {
    /** CSS selector, default: body */
    selector?: string;
    asMarkdown?: boolean;
}
export declare function isSafeUrl(url: string): boolean;
export declare class BrowserManager {
    private sessions;
    private activePage;
    private browser;
    private playwrightAvailable;
    private playwright;
    constructor();
    /** Start a browser session; lazily launches Playwright or falls back to fetch. */
    startSession(sessionId?: string): Promise<BrowserSession>;
    /** Get an active session by id. */
    getSession(sessionId: string): BrowserSession | undefined;
    /** Close a session. */
    closeSession(sessionId: string): Promise<void>;
    /** Close all sessions and release the browser. */
    closeAll(): Promise<void>;
    hasPlaywright(): boolean;
    getPage(): unknown;
    updateSession(sessionId: string, url: string, title: string): void;
}
export declare const browserManager: BrowserManager;
/** Navigate to a URL. Uses Playwright when available, falls back to fetch. */
export declare function browserNavigate(url: string, opts?: NavigateOptions): Promise<BrowserResult>;
/** Click a CSS selector element (Playwright only). */
export declare function browserClick(selector: string, _sessionId?: string): Promise<BrowserResult>;
/** Type text into a selector (Playwright only). */
export declare function browserType(selector: string, text: string, _sessionId?: string): Promise<BrowserResult>;
/** Take a screenshot as base64 PNG (Playwright only). */
export declare function browserScreenshot(_sessionId?: string): Promise<BrowserResult>;
/** Extract text content from the current page. Falls back to fetching the current URL. */
export declare function browserExtract(opts?: ExtractOptions, sessionId?: string): Promise<BrowserResult>;
/** Close the browser session. */
export declare function browserClose(sessionId?: string): Promise<void>;
//# sourceMappingURL=browser.d.ts.map