import { Layout } from '../../layout.js';
import { BorderRadiusConfig } from './config.js';
import { BorderRadiusStyleParser } from './parser.js';
export declare abstract class BorderRadiusMeasurer {
    /**
     * Measure the border radius of an element.
     * @param element the target element
     * @param layout the current layout of the element
     */
    abstract measure(element: HTMLElement, layout: Layout): BorderRadiusConfig;
}
/**
 * A {@link BorderRadiusMeasurer} that measures the border radius of an element
 * by parsing the computed style of the element via `window.getComputedStyle`.
 */
export declare class ComputedStyleBorderRadiusMeasurer implements BorderRadiusMeasurer {
    protected parser: BorderRadiusStyleParser;
    constructor(parser: BorderRadiusStyleParser);
    measure(element: HTMLElement, layout: Layout): BorderRadiusConfig;
}
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