import { BaseObservableMap, Mapper, Updater } from "./index";
export declare class MappedMap<K, V, MappedV> extends BaseObservableMap<K, MappedV> {
    private _source;
    private _mapper;
    private _updater?;
    private _mappedValues;
    private _subscription?;
    constructor(source: BaseObservableMap<K, V>, mapper: Mapper<V, MappedV>, updater?: Updater<V, MappedV>);
    _emitSpontaneousUpdate(key: K, params: any): void;
    onAdd(key: K, value: V): void;
    onRemove(key: K): void;
    onUpdate(key: K, value: V, params: any): void;
    onSubscribeFirst(): void;
    onUnsubscribeLast(): void;
    onReset(): void;
    [Symbol.iterator](): IterableIterator<[K, MappedV]>;
    get size(): number;
    get(key: K): MappedV | undefined;
}