/**
 * Bot / crawler detection for the browser SDK.
 *
 * User-agent patterns are aligned with PostHog's `@posthog/core` bot list
 * (https://github.com/PostHog/posthog-js — `utils/bot-detection.ts`) so
 * behaviour matches what PostHog integrators expect.
 *
 * Keep in sync with `app/src/lib/tracking/bot-detection.ts`.
 */
/** Substrings matched case-insensitively against `User-Agent` (and SDK `navigator.userAgent`). */
export declare const DEFAULT_BLOCKED_UA_STRS: readonly string[];
/**
 * Returns true when the user agent matches a known bot/crawler pattern.
 */
export declare function isBlockedUA(ua: string | undefined | null, customBlockedUserAgents?: string[]): boolean;
/** Subset of `Navigator.userAgentData` used for bot checks. */
export interface NavigatorUAData {
    brands?: {
        brand: string;
        version: string;
    }[];
    platform?: string;
}
/**
 * Browser-side bot check (PostHog `isLikelyBot` parity): UA string, CH brand
 * hints, and `navigator.webdriver`.
 */
export declare function isLikelyBot(nav: Navigator | undefined, customBlockedUserAgents?: string[]): boolean;