import type { BeforeSendFn } from 'posthog-js';
export declare function hash(str: string): number;
/**
 * Provides an implementation of sampling that samples based on the distinct ID.
 * Using the provided percentage.
 * Can be used to create a beforeCapture fn for a PostHog instance.
 *
 * Setting 0.5 will cause roughly 50% of distinct ids to have events sent.
 * Not 50% of events for each distinct id.
 *
 * @param percent a number from 0 to 1, 1 means always send and, 0 means never send the event
 */
export declare function sampleByDistinctId(percent: number): BeforeSendFn;
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