import * as i0 from "@angular/core";
export declare class AlertHeadingDirective {
    get hostClasses(): any;
    constructor();
    static ɵfac: i0.ɵɵFactoryDeclaration<AlertHeadingDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AlertHeadingDirective, "[cAlertHeading]", never, {}, {}, never, never, false>;
}