import { ElementRef, Renderer2 } from '@angular/core';
import * as i0 from "@angular/core";
export declare type NglFileCropValue = '16-by-9' | '4-by-3' | '1-by-1';
export declare class NglFileCrop {
    private element;
    private renderer;
    set nglFileCrop(ratio: NglFileCropValue);
    private cropClass;
    private currentRatio;
    constructor(element: ElementRef, renderer: Renderer2);
    static ɵfac: i0.ɵɵFactoryDeclaration<NglFileCrop, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NglFileCrop, "[nglFileCrop]", never, { "nglFileCrop": "nglFileCrop"; }, {}, never, never, false, never>;
}