import type { TranscriptItem, TranscriptState } from "./transcript-types.js";
export declare function appendItem(state: TranscriptState, item: TranscriptItem): TranscriptState;
export declare function updateItem(state: TranscriptState, id: string, update: (item: TranscriptItem) => TranscriptItem): TranscriptState;
export declare function removeItem(state: TranscriptState, id: string): TranscriptState;
export declare function moveItemBefore(state: TranscriptState, itemId: string, beforeId: string): TranscriptState;