import { Observable } from 'rxjs';
import { FlagChangeset, IFeaturesService, FlagSet, IWritableFeaturesService, WritableFlagChangeset, WritableFeaturesServiceConfig } from '../interfaces/features.interface';
import * as i0 from "@angular/core";
export declare class StorageFeaturesService implements IFeaturesService, IWritableFeaturesService {
    private config?;
    private currentFlagState;
    private readonly flags;
    private readonly flags$;
    private readonly initSubject;
    constructor(config?: WritableFeaturesServiceConfig);
    get storageKey(): string;
    init(): Observable<WritableFlagChangeset>;
    isOn$(key: string): Observable<boolean>;
    isOff$(key: string): Observable<boolean>;
    getFlags$(): Observable<WritableFlagChangeset>;
    setFlag(key: string, value: any): void;
    removeFlag(key: string): void;
    resetFlags(flags: FlagSet): void;
    mergeFlags(flags: FlagChangeset): void;
    private waitForInitializationToFinish;
    static ɵfac: i0.ɵɵFactoryDeclaration<StorageFeaturesService, [{ optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<StorageFeaturesService>;
}