import * as i0 from "@angular/core";
export declare class StringService {
    constructor();
    sort(input: any[], key: string): void;
    viToEn(input: string): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<StringService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<StringService>;
}