1 import { Subject } from './Subject';
2 import { Subscriber } from './Subscriber';
3 import { Subscription } from './Subscription';
5 * A variant of Subject that requires an initial value and emits its current
6 * value whenever it is subscribed to.
8 * @class BehaviorSubject<T>
10 export declare class BehaviorSubject<T> extends Subject<T> {
12 constructor(_value: T);
14 /** @deprecated This is an internal implementation detail, do not use. */
15 _subscribe(subscriber: Subscriber<T>): Subscription;