import { EventStream, EventStreamSeed, EventStreamSource, ObservableSeed, Observer, Scope, Subscribe, TypeBitfield, Desc } from "./abstractions";
import { Dispatcher } from "./dispatcher";
import { HKT } from "./hkt";
import { ObservableBase, ObservableSeedImpl } from "./observable";
declare type StreamEvents<V> = {
    value: V;
};
export declare abstract class EventStreamBase<V> extends ObservableBase<V, EventStream<V>> implements EventStream<V> {
    [HKT]: EventStream<V>;
    observableType(): "EventStream" | "Bus";
    _L: TypeBitfield;
    abstract getScope(): Scope;
    applyScope(scope: Scope): EventStream<V>;
}
export declare class StatefulEventStream<V> extends EventStreamBase<V> {
    protected dispatcher: Dispatcher<StreamEvents<V>>;
    private _scope;
    constructor(desc: Desc, scope: Scope);
    subscribe(onValue: Observer<V>, onEnd?: Observer<void>): import("./abstractions").Callback;
    getScope(): Scope;
}
export declare class StatelessEventStream<V> extends EventStreamBase<V> {
    observableType(): "EventStream";
    private _scope;
    subscribe: Subscribe<V>;
    constructor(desc: Desc, subscribe: Subscribe<V>, scope: Scope);
    getScope(): Scope;
}
export declare class SeedToStream<V> extends StatefulEventStream<V> {
    observableType(): "EventStream";
    constructor(seed: ObservableSeed<V, EventStreamSource<V>, EventStream<V>>, scope: Scope);
}
export declare class EventStreamSourceImpl<V> extends ObservableBase<V, EventStream<V>> {
    [HKT]: EventStreamSource<V>;
    observableType(): "EventStreamSource";
    _L: TypeBitfield;
    subscribe: Subscribe<V>;
    constructor(desc: Desc, subscribe: Subscribe<V>);
    applyScope(scope: Scope): EventStream<V>;
}
export declare class EventStreamSeedImpl<V> extends ObservableSeedImpl<V, EventStreamSource<V>, EventStream<V>> implements EventStreamSeed<V> {
    [HKT]: EventStreamSeed<V>;
    observableType(): "EventStreamSeed";
    _L: TypeBitfield;
    constructor(desc: Desc, subscribe: Subscribe<V>);
    applyScope(scope: Scope): EventStream<V>;
}
export {};