import { BehaviorSubject } from "rxjs";
export type IStorage = {
    getItem: <T>(key: string) => Promise<T | undefined> | T | undefined;
    setItem: <T>(key: string, value: T) => void;
};
export declare class StorageBehaviorSubject<T> extends BehaviorSubject<T> {
    private storage;
    private key;
    constructor(storage: IStorage, key: string, defaultValue: T);
    next(value: T): void;
}
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