import type { UIMessageStreamChunk } from "./chunk-types.js";
type ChunkController = {
    enqueue(chunk: UIMessageStreamChunk): void;
};
export declare const createChunkNormalizer: () => {
    normalize(chunk: {
        type: string;
    } & Record<string, any>, controller: ChunkController): void;
    flush(controller: ChunkController): void;
};
export {};
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