import { type Icon } from './icons.js';
declare const styles: readonly ["purple", "gray", "red", "green", "yellow", "blue"];
type HighlightStyle = (typeof styles)[number];
export declare class DevToolbarHighlight extends HTMLElement {
    icon?: Icon | undefined | null;
    _highlightStyle: HighlightStyle;
    get highlightStyle(): "red" | "green" | "yellow" | "blue" | "gray" | "purple";
    set highlightStyle(value: "red" | "green" | "yellow" | "blue" | "gray" | "purple");
    static observedAttributes: string[];
    shadowRoot: ShadowRoot;
    constructor();
    updateStyle(): void;
    attributeChangedCallback(): void;
    connectedCallback(): void;
}
export {};