/**
 * Local Project Discovery
 *
 * Handles discovery and caching of local project paths for the dev server.
 * Supports finding projects in standard directories (data/projects, projects).
 *
 * @module server/runtime-handler/local-project-discovery
 */
import type { RuntimeAdapter } from "../../platform/adapters/base.js";
import { LRUCache } from "../../utils/lru-wrapper.js";
/**
 * Injectable cache container for project discovery state.
 *
 * Wraps both the project-path cache (slug → absolute path) and the
 * adapter cache (project dir → RuntimeAdapter) so that callers — especially
 * tests — can supply an isolated instance instead of sharing global state.
 */
export declare class ProjectDiscoveryCache {
    /** Cache of discovered local project paths by slug */
    readonly projects: LRUCache<string, string>;
    /** Cache of local adapters by project directory */
    readonly adapters: LRUCache<string, RuntimeAdapter>;
    constructor(opts?: {
        maxProjects?: number;
        maxAdapters?: number;
    });
    /** Clear both caches */
    clear(): void;
}
/** Default module-level cache instance (backward-compatible singleton) */
export declare const defaultDiscoveryCache: ProjectDiscoveryCache;
/** Standard directories to search for local projects */
export declare const standardProjectDirs: string[];
/**
 * Find the local filesystem path for a project by slug.
 *
 * @param slug - The project slug to find
 * @param adapter - The runtime adapter to use for filesystem operations
 * @param headerPath - Optional path from x-project-path header (takes precedence)
 * @param cache - Optional cache instance (defaults to module-level singleton)
 * @returns The absolute path to the project, or undefined if not found
 */
export declare function findLocalProjectPath(slug: string, adapter: RuntimeAdapter, headerPath?: string, cache?: ProjectDiscoveryCache): Promise<string | undefined>;
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