import { ElementRef, OnChanges } from '@angular/core';
export declare class GNDConstants {
    static GND_PREFIX: string;
    static GND_RESOLVER: string;
    static VIAF_PREFIX: string;
    static VIAF_RESOLVER: string;
}
/**
 * This directive renders a GND/IAF or a VIAF identifier as a link to the respective resolver.
 */
export declare class GndDirective implements OnChanges {
    private _ele;
    set gnd(value: string);
    get gnd(): string;
    private _gnd;
    constructor(_ele: ElementRef);
    ngOnChanges(): void;
}