import { ToObjectOptions } from 'mongoose';
/**
 * @fileoverview
 * Provides a factory function to generate Mongoose `ToObjectOptions` with custom
 * document transformation logic and virtual fields enabled. This utility is
 * designed to encapsulate reusable transformation behavior across different schemas.
 */
/**
 * Creates a reusable Mongoose `ToObjectOptions` configuration that includes virtual fields
 * and applies a custom transformation to the document.
 *
 * This abstraction ensures consistent output formatting and enables application-wide use
 * of shared transformation logic when converting Mongoose documents to plain JavaScript objects.
 *
 * @template T - The original Mongoose document type.
 * @template R - The transformed output type. Defaults to `T` if not explicitly specified.
 *
 * @param {(document: T) => R} transformDocument - A function that receives the raw Mongoose document
 * and returns a transformed plain JavaScript object.
 *
 * @returns {ToObjectOptions} A `toObject` configuration object with virtuals enabled and a custom transform applied.
 */
export declare const createSchemaTransformer: <T, R = T>(transformDocument: (document: T) => R) => ToObjectOptions;