import { ElementRef, Renderer2 } from '@angular/core';
import * as i0 from "@angular/core";
export declare class TreetableHeaderRenderer {
    private el;
    private renderer;
    constructor(el: ElementRef, renderer: Renderer2);
    /**
     * Returns the client width of the header cell.
     */
    getWidth(): number;
    /**
     * Returns all classes starting with 'clr-col'.
     */
    getColumnClasses(): string[];
    setDefaultColumnClass(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<TreetableHeaderRenderer, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TreetableHeaderRenderer, "clr-tt-column", never, {}, {}, never, never, false, never>;
}