/**
 * Prompt Versioning & Experimentation Pattern
 *
 * Manages prompt versions with rollback, gradual rollout, and performance comparison.
 * Enables safe experimentation with different prompt formulations.
 *
 * @example
 * ```typescript
 * const result = await versionedPrompt({
 *   promptId: 'product-summary',
 *   versions: {
 *     'v1.0': {
 *       prompt: 'Summarize this product in 2 sentences',
 *       active: false,
 *       performance: { satisfaction: 0.75, avgTokens: 50 }
 *     },
 *     'v2.0': {
 *       prompt: 'Create engaging 2-sentence product summary',
 *       active: true,
 *       rolloutPercentage: 50
 *     }
 *   },
 *   execute: async (prompt, version) => {
 *     return await generateText({ model, prompt: prompt + '\n\n' + productData });
 *   },
 *   onVersionUsed: (version, result) => {
 *     analytics.track('prompt_version_used', { version, tokens: result.tokens });
 *   },
 *   autoRollback: {
 *     enabled: true,
 *     conditions: [
 *       { metric: 'satisfaction', threshold: 0.7, window: '1h', operator: 'lt' }
 *     ]
 *   }
 * });
 * ```
 */
import type { PromptVersioningConfig, PromptVersionExecutionResult, PromptVersionStorage, PromptVersionMetrics } from "../types/prompt-versioning";
/**
 * Simple in-memory storage for prompt version metrics using GlobalStorage
 */
export declare class InMemoryPromptVersionStorage implements PromptVersionStorage {
    private storage;
    private readonly namespace;
    constructor();
    private getMetricsKey;
    private getActiveVersionKey;
    private getHistoryKey;
    getMetrics(promptId: string, version: string): Promise<PromptVersionMetrics | null>;
    updateMetrics(promptId: string, version: string, metrics: Partial<PromptVersionMetrics>): Promise<void>;
    getActiveVersion(promptId: string): Promise<string | null>;
    setActiveVersion(promptId: string, version: string): Promise<void>;
    getVersionHistory(promptId: string): Promise<string[]>;
}
/**
 * Execute a prompt with version management
 */
export declare function versionedPrompt<TResult = any>(config: PromptVersioningConfig<TResult>): Promise<PromptVersionExecutionResult<TResult>>;
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