import type { BlockElement } from "doc-editor-delta";
import type { AssertT } from "doc-editor-utils";
declare module "doc-editor-delta/dist/interface" {
    interface BlockElement {
        [HIGHLIGHT_BLOCK_KEY]?: {
            border: string;
            background: string;
        };
    }
}
export declare const HIGHLIGHT_BLOCK_KEY = "highlight-block";
export declare const HL_DOM_TAG = "data-hl-block";
export declare const COLOR_MAP: AssertT<BlockElement["highlight-block"]>[];