export interface ThreadMessageLike {
    content?: string;
    is_bot_message?: boolean;
    is_from_me?: boolean;
}
export interface InputHistoryState {
    entries: string[];
    index: number | null;
    draft: string;
}
export type InputHistoryDirection = 'up' | 'down';
export declare function createInputHistoryState(entries: string[]): InputHistoryState;
export declare function collectThreadUserInputs(messages: ThreadMessageLike[]): string[];
export declare function rememberSubmittedInput(entries: string[], value: string): string[];
export declare function moveInputHistorySelection(state: InputHistoryState, currentValue: string, direction: InputHistoryDirection): {
    state: InputHistoryState;
    value: string;
};