import { Subject } from './Subject';
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import { Subscriber } from './Subscriber';
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import { Subscription } from './Subscription';
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/**
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* A variant of Subject that requires an initial value and emits its current
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* value whenever it is subscribed to.
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*
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* @class BehaviorSubject<T>
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*/
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export declare class BehaviorSubject<T> extends Subject<T> {
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private _value;
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constructor(_value: T);
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readonly value: T;
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/** @deprecated This is an internal implementation detail, do not use. */
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_subscribe(subscriber: Subscriber<T>): Subscription;
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getValue(): T;
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next(value: T): void;
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}
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