import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare abstract class AbstractFlexLayoutDirective {
    protected abstract readonly el: ElementRef;
    protected get classList(): DOMTokenList;
    static ɵfac: i0.ɵɵFactoryDeclaration<AbstractFlexLayoutDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AbstractFlexLayoutDirective, never, never, {}, {}, never>;
}
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