import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export declare class KbqRectangleItem {
    protected readonly isBrowser: boolean;
    protected readonly nativeElement: HTMLElement;
    private readonly window;
    readonly state: Subject<void>;
    get collapsed(): boolean;
    set collapsed(value: boolean);
    private _collapsed;
    getOuterElementWidth(): number;
    static ɵfac: i0.ɵɵFactoryDeclaration<KbqRectangleItem, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<KbqRectangleItem, never, never, {}, {}, never, never, true, never>;
}