import type { AbTestAssignment, AbTestCookie } from '../types';
/** Default cookie name for A/B test assignments */
export declare const DEFAULT_COOKIE_NAME = "ab-test-info";
/** Default cookie max age: 30 days in seconds */
export declare const DEFAULT_COOKIE_MAX_AGE: number;
/**
 * Parse the A/B test cookie value into an assignment map.
 *
 * @param cookieValue - The raw cookie value string
 * @returns Parsed assignment map, or empty object if invalid
 */
export declare function parseCookie(cookieValue: string | undefined): AbTestCookie;
/**
 * Serialize an assignment map to a cookie value string.
 *
 * @param assignments - The assignment map to serialize
 * @returns Serialized cookie value
 */
export declare function serializeCookie(assignments: AbTestCookie): string;
/**
 * Get a specific test assignment from the cookie.
 *
 * @param cookie - Parsed cookie object
 * @param testId - The test ID to look up
 * @returns The assignment for this test, or undefined
 */
export declare function getAssignment(cookie: AbTestCookie, testId: string): AbTestAssignment | undefined;
/**
 * Set a test assignment in the cookie object.
 *
 * @param cookie - Parsed cookie object (will be mutated)
 * @param testId - The test ID
 * @param assignment - The assignment to store
 */
export declare function setAssignment(cookie: AbTestCookie, testId: string, assignment: AbTestAssignment): void;
/**
 * Read an A/B test cookie from a document.cookie string (client-side).
 *
 * @param documentCookie - The document.cookie string
 * @param cookieName - The cookie name to look for
 * @returns Parsed assignment map, or empty object if not found
 */
export declare function readCookieFromDocument(documentCookie: string, cookieName?: string): AbTestCookie;
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