/**
 * Cache computed values or resources for a specified duration to improve performances.
 *
 * @license
 * Copyright 2022-2024 Matter.js Authors
 * SPDX-License-Identifier: Apache-2.0
 */
declare class GenericCache<T> {
    private readonly expirationMs;
    private readonly expireCallback?;
    protected readonly knownKeys: Set<string>;
    protected readonly values: Map<string, T>;
    protected readonly timestamps: Map<string, number>;
    private readonly periodicTimer;
    constructor(name: string, expirationMs: number, expireCallback?: ((key: string, value: T) => Promise<void>) | undefined);
    keys(): string[];
    private deleteEntry;
    clear(): Promise<void>;
    close(): Promise<void>;
    private expire;
}
export declare class Cache<T> extends GenericCache<T> {
    private readonly generator;
    constructor(name: string, generator: (...params: any[]) => T, expirationMs: number, expireCallback?: (key: string, value: T) => Promise<void>);
    get(...params: any[]): T;
}
export declare class AsyncCache<T> extends GenericCache<T> {
    private readonly generator;
    constructor(name: string, generator: (...params: any[]) => Promise<T>, expirationMs: number, expireCallback?: (key: string, value: T) => Promise<void>);
    get(...params: any[]): Promise<T>;
}
export {};
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