export declare namespace RNANewsJSON {
    type RNANewsResponseItem = [id: string, title: string, source: string, type: string];
    type RNANewsItem = [day: number, title: string, source: string, type: string];
    /**
     * The response JSON for RNANews from Morningstar.
     */
    interface ResponseItem {
        /**
         * A UNIX timestamp in milliseconds specifying the day
         * at which the news items were published.
         */
        day: string;
        /**
         * List of news items.
         *
         * A news-item is a 4-tuple with the following fields:
         *  - Unique identifier
         *  - Title of announcement.
         *  - Source
         *  - Type
         */
        items: RNANewsResponseItem[];
    }
    type Response = ResponseItem[];
    function isResponse(json?: unknown): json is Response;
}
export default RNANewsJSON;