export declare const COMPOSER_INPUT_HISTORY_LIMIT = 100;
export interface ComposerInputHistoryItem {
    id: number;
    text: string;
    createdAt: number;
}
export declare function listComposerInputHistory(limit?: number): ComposerInputHistoryItem[];
export declare function appendComposerInputHistory(text: string, now?: number): {
    item: ComposerInputHistoryItem;
    inserted: boolean;
};
export declare function clearComposerInputHistory(): number;