/**
 * A/B Testing Pattern
 *
 * Allows testing multiple variants simultaneously and measuring their performance
 * to continuously optimize AI applications.
 *
 * @example
 * ```typescript
 * const result = await abTest({
 *   variants: [
 *     {
 *       name: 'Simple',
 *       weight: 0.33,
 *       execute: async () => generateText({ prompt: 'Explain quantum computing' })
 *     },
 *     {
 *       name: 'With Context',
 *       weight: 0.33,
 *       execute: async () => generateText({
 *         prompt: 'Explain quantum computing to a software developer'
 *       })
 *     }
 *   ],
 *   userId: 'user-123',
 *   onVariantSelected: (variant, result) => {
 *     analytics.track('variant_selected', { variant: variant.name });
 *   }
 * });
 * ```
 */
import type { ABTestConfig, ABTestResult } from "../types/ab-test";
/**
 * Simple in-memory storage for sticky assignments using GlobalStorage
 */
declare class InMemoryAssignmentStorage {
    private storage;
    private readonly namespace;
    constructor();
    get(userId: string, experimentId: string): Promise<string | null>;
    set(userId: string, experimentId: string, variantName: string): Promise<void>;
}
/**
 * Execute an A/B test with the given configuration
 */
export declare function abTest<TResult = any>(config: ABTestConfig<TResult>): Promise<ABTestResult<TResult>>;
/**
 * Export the in-memory storage for testing purposes
 */
export { InMemoryAssignmentStorage };
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