import { InputValues, MemoryVariables, BaseMemory, OutputValues } from "@langchain/core/memory";
import { BaseChatMemory, BaseChatMemoryInput } from "./chat_memory.js";
/**
 * Interface that defines the shape of the input object that the
 * CombinedMemory constructor accepts. It extends the BaseChatMemoryInput
 * interface and adds additional properties.
 */
export interface CombinedMemoryInput extends BaseChatMemoryInput {
    memories: BaseMemory[];
    humanPrefix?: string;
    aiPrefix?: string;
    memoryKey?: string;
}
/**
 * Class that manages and manipulates previous chat messages. It extends
 * from the BaseChatMemory class and implements the CombinedMemoryInput
 * interface.
 */
export declare class CombinedMemory extends BaseChatMemory implements CombinedMemoryInput {
    humanPrefix: string;
    aiPrefix: string;
    memoryKey: string;
    memories: BaseMemory[];
    constructor(fields?: CombinedMemoryInput);
    /**
     * Checks for repeated memory variables across all memory objects. Throws
     * an error if any are found.
     */
    checkRepeatedMemoryVariable(): void;
    /**
     * Checks if input keys are set for all memory objects. Logs a warning if
     * any are missing.
     */
    checkInputKey(): void;
    /**
     * Loads memory variables from all memory objects.
     * @param inputValues Input values to load memory variables from.
     * @returns Promise that resolves with an object containing the loaded memory variables.
     */
    loadMemoryVariables(inputValues: InputValues): Promise<MemoryVariables>;
    /**
     * Saves the context to all memory objects.
     * @param inputValues Input values to save.
     * @param outputValues Output values to save.
     * @returns Promise that resolves when the context has been saved to all memory objects.
     */
    saveContext(inputValues: InputValues, outputValues: OutputValues): Promise<void>;
    /**
     * Clears all memory objects.
     * @returns Promise that resolves when all memory objects have been cleared.
     */
    clear(): Promise<void>;
    get memoryKeys(): string[];
}