import { InjectionToken } from '@angular/core';
import * as i0 from "@angular/core";
export declare const TUI_CHEVRON: InjectionToken<string>;
export declare class TuiChevron {
    private readonly el;
    private readonly dropdown;
    protected readonly nothing: undefined;
    protected readonly toggle: import("@angular/core").EffectRef;
    readonly chevron: import("@angular/core").WritableSignal<boolean | "">;
    set tuiChevron(chevron: boolean | '');
    static ɵfac: i0.ɵɵFactoryDeclaration<TuiChevron, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TuiChevron, "[tuiChevron]", never, { "tuiChevron": { "alias": "tuiChevron"; "required": false; }; }, {}, never, never, true, never>;
}