/**
 * @internal
 */
export type TransformFunctionType = <T>(value: T, key?: unknown) => T;
/**
 * Check if a transformation function should be applied to an object
 * @internal
 * @param value
 * @param transform
 * @param key
 * @returns
 */
export declare const _checkTransform: <T>(value: T, transform?: TransformFunctionType, key?: unknown) => T;