import { OnInit, ElementRef } from '@angular/core';
export declare class FlipcardComponent implements OnInit {
    width: number;
    height: number;
    constructor();
    ngOnInit(): void;
    rotate(): void;
}
export declare class FrontDirective implements OnInit {
    private element;
    constructor(element: ElementRef);
    ngOnInit(): void;
}
export declare class BackDirective implements OnInit {
    private element;
    constructor(element: ElementRef);
    ngOnInit(): void;
}