import { Event } from './event.js';
import { Range } from './range.js';
import { SearchEvent } from './scanners/searchstate.js';
export declare class Aggregation<State, Output> {
    id: string;
    state: State;
    close: ((lastEvent: Event, states: any) => boolean);
    type: Aggregator<State, Output>;
    constructor(id: string, state: State, close: ((lastEvent: Event, states: any) => boolean), type: Aggregator<State, Output>);
}
export type AggregationOptions<Event, State, Output> = {
    initialize?: (firstEvent: Event, states: any) => State;
    reduce?: (state: State, nextEvent: SearchEvent, states: any) => State;
    start?: (firstEvent: Event, states: any) => ((lastEvent: SearchEvent, states: any) => boolean) | undefined;
    getId?: (firstEvent: Event, states: any) => string;
    close?: (state: State, states: any, lastEvent?: SearchEvent) => Output;
};
export declare class Aggregator<State, Output> {
    type: string;
    getId: (firstEvent: Event, states: any) => string;
    start: (firstEvent: Event, states: any) => ((lastEvent: Event, states: any) => boolean) | undefined;
    initialize: (firstEvent: Event, states: any) => State;
    reduce: (state: State, nextEvent: SearchEvent, states: any) => State;
    close: (state: State, states: any, lastEvent?: SearchEvent) => Output;
    cancel?: (state: Output) => boolean;
    constructor(type: string, getId: (firstEvent: Event, states: any) => string, start: (firstEvent: Event, states: any) => ((lastEvent: Event, states: any) => boolean) | undefined, initialize: (firstEvent: Event, states: any) => State, reduce: (state: State, nextEvent: SearchEvent, states: any) => State, close: (state: State, states: any, lastEvent?: SearchEvent) => Output, cancel?: (state: Output) => boolean);
    apply(firstEvent: Event): Aggregation<any, any> | undefined;
    static create: <State_1, Output_1>(type: string, appliesTo: (Event: Event, states: any) => boolean, options: AggregationOptions<Event, State_1, Output_1>) => Aggregator<State_1, Output_1>;
}
export declare namespace Aggregator {
    const Label: (name: any) => Aggregator<unknown, any>;
    const Only: <State>(name: any, aspects: any, extract: (next: SearchEvent) => State) => Aggregator<State, State>;
    const All: <Item>(name: any, aspects: any, extract: (next: SearchEvent) => Item) => Aggregator<[Range, Item][], [Range, Item][]>;
}
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