export interface ConversationSetupConcurrencyParams<TMessage> {
    loadHistory: () => Promise<TMessage[]>;
    persistMessage?: () => Promise<TMessage | null>;
}
export interface ConversationSetupConcurrencyResult<TMessage> {
    history: TMessage[];
    persistedMessage: TMessage | null;
    historyError?: Error;
    persistenceError?: Error;
}
/**
 * Runs the conversation history load and optional persistence tasks concurrently.
 * Converts any rejection into an error on the result object instead of throwing.
 */
export declare function runConversationSetupConcurrency<TMessage>({ loadHistory, persistMessage }: ConversationSetupConcurrencyParams<TMessage>): Promise<ConversationSetupConcurrencyResult<TMessage>>;
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