import type { ChatMsg } from '../types';
type Side = 'user' | 'assistant';
type Listener = (chat: ChatMsg[]) => void;
type ChatStoreOptions = {
    isMeaningfulText?: (t: string) => boolean;
    userAddOnDelta?: boolean;
    userPlaceholderOnStart?: boolean;
    assistantAddOnDelta?: boolean;
    assistantPlaceholderOnStart?: boolean;
};
export declare class ChatStore {
    private chat;
    private listeners;
    private seqRef;
    private userOrderRef;
    private respOrderRef;
    private userState;
    private assistantState;
    private isMeaningful;
    private cfg;
    constructor(opts?: ChatStoreOptions);
    get(): ChatMsg[];
    subscribe(fn: Listener): () => boolean;
    private emit;
    private orderBy;
    private stateBy;
    private ensureOrder;
    startUser(itemId: string): void;
    startAssistant(responseId: string): void;
    putDelta(side: Side, id: string, delta: string): void;
    finalize(side: Side, id: string, status: 'done' | 'canceled', finalText?: string): void;
    destroy(): void;
    clear(): void;
}
export {};
//# sourceMappingURL=ChatStore.d.ts.map