import { type TuiMarkdownParser } from "./parser.js";
import type { TuiMarkdownThemeOverrides } from "./theme.js";
import type { TuiMarkdownBlock } from "./types.js";
export type TuiMarkdownBlockSourceSnapshot = Readonly<{
    version: number;
    blocks: readonly TuiMarkdownBlock[];
}>;
export type TuiMarkdownBlockSource = Readonly<{
    version: number;
    blocks: readonly TuiMarkdownBlock[];
    appendDelta: (text: string) => void;
    replaceTailBlock: (text: string) => void;
    finalizeBlock: () => void;
    clear: () => void;
    snapshot: () => TuiMarkdownBlockSourceSnapshot;
}>;
export type TuiMarkdownBlockSourceOptions = Readonly<{
    parser?: TuiMarkdownParser;
    customHtmlTags?: readonly string[];
    theme?: TuiMarkdownThemeOverrides;
}>;
export declare function createMarkdownBlockSource(options?: TuiMarkdownBlockSourceOptions): TuiMarkdownBlockSource;