/**
 * CSS Cache Manager
 *
 * Manages per-page CSS caching to avoid redundant SSR for CSS generation.
 * Supports injection of CacheRepository for testing.
 *
 * @module rendering/orchestrator/css-cache
 */
import type { CacheRepository } from "../../repositories/types.js";
import { LRUCache } from "../../utils/lru-wrapper.js";
/** Timeout for CSS generation SSR (shorter than full SSR since it's optional) */
export declare const CSS_SSR_TIMEOUT_MS = 5000;
/** Maximum number of entries in the CSS cache */
export declare const PAGE_CSS_CACHE_MAX_SIZE = 200;
/** Exposed for testing only — do not use in production code */
export declare const __pageCssCacheForTests: LRUCache<string, string>;
/**
 * Inject a CacheRepository for CSS cache testing.
 * Call with null to restore default Map-based caching.
 */
export declare function __injectCssCacheForTests(cacheRepo: CacheRepository<string> | null): void;
/** Create a cache key for page CSS */
export declare function getPageCssCacheKey(projectId: string | undefined, environment: string | undefined, slug: string, projectUpdatedAt: string | undefined, dependencyPinningCacheKey?: string, moduleServerOrigin?: string): string;
/** Get cached CSS for a page (if available) - sync for backward compatibility */
export declare function getCachedPageCss(cacheKey: string): string | undefined;
/** Cache CSS for a page - sync for backward compatibility */
export declare function cachePageCss(cacheKey: string, css: string): void;
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