import Step, { ExtractStepValue } from './Step';
import { process } from 'gremlin';
declare type Statics = process.Statics;
declare type GraphTraversal = process.GraphTraversal;
export default class GroupByStep<KeyStep extends Step<KeyType>, ValueStep extends Step<ValueType>, KeyType = ExtractStepValue<KeyStep>, ValueType = ExtractStepValue<ValueStep>> extends Step<Map<KeyType, ValueType>> {
    protected readonly keyStep: KeyStep;
    protected readonly valueStep: ValueStep;
    static groupBy<K extends Step<KT>, V extends Step<VT>, KT = ExtractStepValue<K>, VT = ExtractStepValue<V>>(q: GraphTraversal | Statics, keyStep: K, valueStep: V): GroupByStep<K, V, KT, VT>;
    constructor(q: GraphTraversal, keyStep: KeyStep, valueStep: ValueStep);
    deserialize(v: unknown): Map<KeyType, ValueType>;
    createContinuation<This extends this>(g: GraphTraversal): this;
}
export {};