import { ExpressionOperator } from "../../../core";
/**
 * Truncates a date.
 *
 * See {@link https://www.mongodb.com/docs/manual/reference/operator/aggregation/dateTrunc/}
 *
 * @param obj
 * @param expr
 * @param options
 * @returns
 */
export declare const $dateTrunc: ExpressionOperator<Date>;
