import { SlidingTaskMap } from 'promise-based-task';
import { BaseCache } from './base.js';
import { Serializable } from '../internals/serializable.js';
import '../internals/types.js';
import '../internals/helpers/guards.js';

/**
 * Copyright 2025 IBM Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

interface SlidingCacheInput {
    size: number;
    ttl?: number;
}
declare class SlidingCacheEntry<T> extends Serializable {
    protected readonly value: T;
    constructor(value: T);
    destructor(): void;
    unwrap(): T;
    createSnapshot(): {
        value: T;
    };
    loadSnapshot(snapshot: ReturnType<typeof this.createSnapshot>): void;
}
declare class SlidingCache<T> extends BaseCache<T> {
    protected readonly provider: SlidingTaskMap<string, SlidingCacheEntry<T>>;
    constructor(input: SlidingCacheInput);
    get(key: string): Promise<T | undefined>;
    has(key: string): Promise<boolean>;
    clear(): Promise<void>;
    delete(key: string): Promise<boolean>;
    set(key: string, value: T): Promise<void>;
    size(): Promise<number>;
    createSnapshot(): {
        enabled: boolean;
        provider: SlidingTaskMap<string, SlidingCacheEntry<T>>;
    };
    loadSnapshot(snapshot: ReturnType<typeof this.createSnapshot>): void;
}

export { SlidingCache, type SlidingCacheInput };