import { BaseMessage } from '../llms/primitives/message.js';
import { BaseMemory } from './base.js';
import { RequiredNested } from '../internals/types.js';
import '../internals/serializable.js';
import '../errors.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 Handlers {
    removalSelector: (messages: BaseMessage[]) => BaseMessage | BaseMessage[];
}
interface SlidingWindowMemoryInput {
    size: number;
    handlers?: Partial<Handlers>;
}
declare class SlidingMemory extends BaseMemory {
    readonly messages: BaseMessage[];
    readonly config: RequiredNested<SlidingWindowMemoryInput>;
    constructor(config: SlidingWindowMemoryInput);
    add(message: BaseMessage, index?: number): Promise<void>;
    delete(message: BaseMessage): Promise<boolean>;
    reset(): void;
    createSnapshot(): {
        config: RequiredNested<SlidingWindowMemoryInput>;
        messages: BaseMessage[];
    };
    loadSnapshot(state: ReturnType<typeof this.createSnapshot>): void;
}

export { type Handlers, SlidingMemory, type SlidingWindowMemoryInput };