/**
 * Resolved config helpers (VTiltConfig may contain sentinel values like
 * `if_capture_pageview` that are not booleans until interpreted).
 */
import type { VTiltConfig } from "../types";
/**
 * Whether automatic $pageleave should run.
 * - `capture_pageleave === false` → off
 * - `capture_pageleave === true` → on
 * - `undefined` or `'if_capture_pageview'` → on iff pageviews are enabled
 *
 * Server-side $config_pending filter handles the edge case where events
 * are captured before fresh remote config loads.
 */
export declare function isPageleaveEnabled(config: VTiltConfig): boolean;