import { LRUCache } from 'lru-cache';
import type { DocumentUri } from 'vscode-languageserver-protocol';
import type { IDocContext } from '../document_transformer_service';
/**
 * Least Recently Used (LRU) cache for storing the most recently accessed files in the workspace.
 * The cache is used to provide context-aware suggestions and is one
 * resolution strategy for the Advanced Context Resolver.
 * We discard the least recently used files when the cache is full.
 */
export declare class LruCache {
    #private;
    private constructor();
    static getInstance(maxSize: number): LruCache;
    static destroyInstance(): void;
    get openFiles(): LRUCache<string, IDocContext, unknown>;
    /**
     * Update the file in the cache.
     * Uses lru-cache under the hood.
     */
    updateFile(context: IDocContext): LRUCache<string, IDocContext, unknown>;
    /**
     * @returns `true` if the file was deleted, `false` if the file was not found
     */
    deleteFile(uri: DocumentUri): boolean;
    /**
     * Get the most recently accessed files in the workspace
     * @param context - The current document context `IDocContext`
     * @param includeCurrentFile - Include the current file in the list of most recent files, default is `true`
     */
    mostRecentFiles({ context, includeCurrentFile, }: {
        context?: IDocContext;
        includeCurrentFile?: boolean;
    }): IDocContext[];
}