import { BaseMap } from './base-map';
import { BehaviorSubject } from 'rxjs';
import { SupportedKeyTypes } from '../interfaces';
/**
 * Implementation of {@link BaseMap} that uses the `BehaviorSubject` based `Observables`
 */
export declare class BehaviorMap<K extends SupportedKeyTypes, V extends any> extends BaseMap<K, V, typeof BehaviorSubject> {
    /**
     * Construct a new instance and determin the initial value to
     *  emit on the observables.
     *
     * @param initialValue value to emit first on the observables
     */
    constructor(initialValue: V);
    /**
     * Get a key's value synchronously
     * @param key key of value to get
     */
    get(key: K): V;
    /**
     * Will call the function for each synchronous value-key value in the map.
     *
     * @param callbackfn function to execute on the maps key-value
     */
    forEach(callbackfn: (value: V, key: K) => void): void;
    /**
     * Get the map's ovservable values synchronously
     */
    values(): IterableIterator<V>;
    /**
     * Get the map's entries as key-value synchronously
     */
    entries(): IterableIterator<[K, V]>;
}