/**
 * Session Recording Utilities
 *
 * Utility functions for session recording.
 * Based on PostHog's sessionrecording-utils.ts
 */
import { IncrementalSource, eventWithTime } from "@rrweb/types";
import type { MaskInputFn, SnapshotBuffer } from "./types";
/**
 * rrweb `maskInputFn` used when `maskAllInputs` is false.
 * Always masks passwords (also via maskInputOptions), sensitive name/id fields,
 * CC/SSN-shaped values, and vt-sensitive / vt-no-capture / vt-mask trees.
 */
export declare function createSensitiveMaskInputFn(): MaskInputFn;
export declare const INCREMENTAL_SNAPSHOT_EVENT_TYPE = 3;
export declare const ONE_KB = 1024;
export declare const ONE_MB: number;
export declare const SEVEN_MB: number;
export declare const RECORDING_MAX_EVENT_SIZE: number;
export declare const RECORDING_BUFFER_TIMEOUT = 2000;
export declare const RECORDING_IDLE_THRESHOLD_MS: number;
/**
 * Selectors passed to rrweb `blockSelector` by default so common non-visible
 * template / screen-reader / Webflow CMS nodes are not serialized (they replay
 * as same-sized placeholders). Reduces payload size and keeps hidden form copy
 * out of recordings. Stylesheet-only `display:none` is not detectable here.
 */
export declare const DEFAULT_INVISIBLE_TEMPLATE_BLOCK_SELECTOR: string;
/**
 * Merge comma-separated CSS selector lists with de-duplication.
 * When `skipDefaults` is true, omit {@link DEFAULT_INVISIBLE_TEMPLATE_BLOCK_SELECTOR}.
 */
export declare function mergeBlockSelectors(skipDefaults: boolean | undefined, ...sources: (string | undefined | null)[]): string | undefined;
/** Active interaction sources */
export declare const ACTIVE_SOURCES: IncrementalSource[];
/**
 * Estimate the size of an object in bytes
 */
export declare function estimateSize(obj: unknown): number;
/**
 * Truncate large console log payloads to prevent excessive data
 */
export declare function truncateLargeConsoleLogs(event: eventWithTime): eventWithTime;
/**
 * Split a large buffer into smaller chunks for transmission
 */
export declare function splitBuffer(buffer: SnapshotBuffer, sizeLimit?: number): SnapshotBuffer[];
/**
 * Check if an event is a session idle custom event
 */
export declare function isSessionIdleEvent(event: eventWithTime): event is eventWithTime & {
    data: {
        tag: string;
        payload: unknown;
    };
};
/**
 * Check if an event is a recording paused custom event
 */
export declare function isRecordingPausedEvent(event: eventWithTime): boolean;
/**
 * Check if an event represents user interaction
 */
export declare function isInteractiveEvent(event: eventWithTime): boolean;
/**
 * Canonical page key for SPA page-boundary detection: origin + pathname.
 * Hash and query are ignored so `/trial?utm=x` and `/trial#faq` are the same page.
 */
export declare function pathnameKeyFromUrl(url: string): string | null;
/**
 * True when `nextHref` is a different page from `prevHref` (origin+pathname).
 * Used to decide whether an SPA `$pageview` should take a FullSnapshot.
 */
export declare function isPathnameSignificantChange(prevHref: string | undefined | null, nextHref: string): boolean;
/**
 * Clamp a value to a range with logging
 */
export declare function clampToRange(value: number, min: number, max: number, label: string, defaultValue: number): number;