import { DataItem, JsonValue } from '../types/DataConnectorTypes';
/**
 * Utility tools for mapping between `EngineDataItem` and `DataItem`.
 */
export declare class DataItemMappingTools {
    /**
     * Checks if the given value is a `DatePropertyWrapper`.
     *
     * @param value The value to check.
     * @returns `true` if the value is a `DatePropertyWrapper`, otherwise `false`.
     */
    private isDatePropertyWrapper;
    /**
     * Checks if the given value is a `Date` object instance.
     *
     * @param value The value to check.
     * @returns `true` if the value is a `Date` object, otherwise `false`.
     */
    private isDateObject;
    /**
     * Transforms an `EngineDataItem` into a `DataItem`.
     *
     * Converts `DatePropertyWrapper` values to JavaScript `Date` objects
     * while keeping other values unchanged.
     *
     * @param dataItem the EngineDataItem to transform.
     * @returns the resulting `DataItem` with parsed date properties.
     */
    mapEngineToDataItem(dataItem: EngineDataItem): DataItem;
    /**
     * Transforms a `DataItem` into an `EngineDataItem`.
     *
     * Converts JavaScript `Date` objects to `DatePropertyWrapper` objects
     * while keeping other values unchanged.
     *
     * @param dataItem the `DataItem` to transform.
     * @returns the resulting `EngineDataItem` with parsed date properties.
     */
    mapDataItemToEngine(dataItem: DataItem): EngineDataItem;
}
/**
 * Internal type used to wrap date objects on the engine side.
 */
export type DatePropertyWrapper = {
    value: number;
    type: 'date';
    chiliReservedTag: 'date';
};
/**
 * Engine data item type.
 */
export type EngineDataItem = {
    [key: string]: JsonValue | DatePropertyWrapper;
};