import { OnDestroy } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import { BaseService } from './base.service';
import { LessifyModuleConfig } from '../lessify.config';
import { LessifyLoggerService } from './logger.service';
import * as i0 from "@angular/core";
export interface Configurations {
    [key: string]: Configuration;
}
export type Configuration = string | number | boolean;
export declare class LessifyConfigurationService extends BaseService implements OnDestroy {
    private readonly httpClient;
    private readonly logger;
    protected readonly config: LessifyModuleConfig;
    private configurations;
    private configurationsEvents;
    private configurationEvents;
    configsChanges$: Observable<Configurations>;
    configChanges$: Observable<string>;
    constructor(httpClient: HttpClient, logger: LessifyLoggerService, config: LessifyModuleConfig);
    get(id: string): Configuration | undefined;
    getAll(): Configurations;
    set(id: string, value: Configuration): void;
    sync(): void;
    /**
     * get Configurations
     * examples:
     * {
     *   "boolean": true,
     *   "date": "2020-02-20",
     *   "text": "any value",
     *   "number": 1
     * }
     */
    fetch<T = Configurations>(): Observable<T>;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<LessifyConfigurationService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LessifyConfigurationService>;
}