import type { RenderNode, RenderNodes } from "../renderer.js";
export type RenderBlock = {
    type: "text";
    text: string;
} | {
    type: "code-block";
    language: string;
    code: string;
} | {
    type: "image";
    data: Buffer;
};
export type ContentTransform = (blocks: RenderBlock[]) => RenderBlock[];
export declare class AssistantMessage {
    private nodes;
    private transform;
    readonly node: RenderNode;
    private container;
    private md;
    private buffer;
    constructor(nodes: RenderNodes, transform?: ContentTransform);
    appendText(t: string): void;
    appendCodeBlock(language: string, code: string): void;
    finalize(): void;
    private rebuild;
    hasContent(): boolean;
}