import { BaseChannel } from "./base.js";
export type BinaryOperator<ValueType, UpdateType> = (a: ValueType, b: UpdateType) => ValueType;
/**
 * Stores the result of applying a binary operator to the current value and each new value.
 */
export declare class BinaryOperatorAggregate<ValueType, UpdateType = ValueType> extends BaseChannel<ValueType, UpdateType, ValueType> {
    lc_graph_name: string;
    value: ValueType | undefined;
    operator: BinaryOperator<ValueType, UpdateType>;
    initialValueFactory?: () => ValueType;
    constructor(operator: BinaryOperator<ValueType, UpdateType>, initialValueFactory?: () => ValueType);
    fromCheckpoint(checkpoint?: ValueType): this;
    update(values: UpdateType[]): boolean;
    get(): ValueType;
    checkpoint(): ValueType;
    isAvailable(): boolean;
}