import { Helpers as HelpersLogger } from 'ng2-logger';
import { Mapping } from './mapping';
import { JSON10 } from 'json10';
export declare class Helpers extends HelpersLogger {
    static JSON: typeof JSON10;
    static get Mapping(): {
        encode<T = Function>(json: Object, mapping: Mapping.Mapping<{}>): T;
        decode(json: Object, autodetect?: boolean): Mapping.Mapping<{}>;
    };
    static checkValidUrl(url: string): boolean;
}