import { ObservableSeed, Observer, Property, PropertySeed, PropertySource, Scope, Subscribe, TypeBitfield, Unsub, Desc } from "./abstractions";
import { HKT } from "./hkt";
import { ObservableBase, ObservableSeedImpl } from "./observable";
export declare abstract class PropertyBase<V, S extends Property<V>> extends ObservableBase<V, Property<V>> implements Property<V>, PropertySeed<V>, PropertySource<V> {
    [HKT]: Property<V>;
    observableType(): "Property" | "Atom";
    constructor(desc: Desc);
    abstract getScope(): Scope;
    abstract get(): V;
    abstract onChange(onValue: Observer<V>, onEnd?: Observer<void>): Unsub;
    subscribe(onValue: Observer<V>, onEnd?: Observer<void>): Unsub;
    applyScope(scope: Scope): S;
}
export declare class StatelessProperty<V, S extends Property<V>> extends PropertyBase<V, S> {
    _L: TypeBitfield;
    get: () => V;
    private _onChange;
    private _scope;
    constructor(desc: Desc, get: () => V, onChange: Subscribe<V>, scope: Scope);
    onChange(onValue: Observer<V>, onEnd?: Observer<void>): import("./abstractions").Callback;
    getScope(): Scope;
}
export declare class StatefulProperty<V, S extends Property<V>> extends PropertyBase<V, S> {
    _L: TypeBitfield;
    private _dispatcher;
    private _scope;
    private _value;
    protected _source: PropertySource<V>;
    constructor(seed: ObservableSeed<V, PropertySource<V> | Property<V>, Property<V>>, scope: Scope);
    onChange(onValue: Observer<V>, onEnd?: Observer<void>): import("./abstractions").Callback;
    get(): V;
    getScope(): Scope;
}
/**
 *  Input source for a StatefulProperty. Returns initial value and supplies changes to observer.
 *  Must skip duplicates!
 **/
export declare class PropertySeedImpl<V> extends ObservableSeedImpl<V, PropertySource<V>, Property<V>> implements PropertySeed<V> {
    [HKT]: PropertySeed<V>;
    observableType(): "PropertySeed";
    _L: TypeBitfield;
    constructor(desc: Desc, get: () => V, onChange: Subscribe<V>);
    applyScope(scope: Scope): Property<V>;
}
export declare class PropertySourceImpl<V> extends ObservableBase<V, Property<V>> implements PropertySource<V> {
    [HKT]: PropertySource<V>;
    _L: TypeBitfield;
    observableType(): "PropertySource";
    private _started;
    private _subscribed;
    private _get;
    onChange_: Subscribe<V>;
    get(): V;
    constructor(desc: Desc, get: () => V, onChange: Subscribe<V>);
    onChange(onValue: Observer<V>, onEnd?: Observer<void>): Unsub;
    subscribe(onValue: Observer<V>, onEnd?: Observer<void>): Unsub;
    applyScope(scope: Scope): Property<V>;
}