import { PropertyDecoratorOptions } from './PropertyDecoratorOptions';
/**
 * A function for value transformation.
 */
export declare type ValueTransformer<FROM = any, TO = any> = (value: FROM, context?: string, options?: PropertyDecoratorOptions & {
    key: string;
}) => TO;
/**
 * Set of transformers.
 */
export interface TransformerSet {
    /**
     * Transform a plain object to a class instance.
     */
    from?: ValueTransformer;
    /**
     * Transform a class instance to a plain object.
     */
    to?: ValueTransformer;
}