/**
 * @packageDocumentation
 *
 * A base class for transformers.
 */
import type { GenericObject } from '../ObjectUtils.cjs';
/**
 * A base class for transformers.
 */
export declare abstract class Transformer {
    /**
     * An id of the transformer.
     */
    abstract get id(): string;
    /**
     * Determines if the transformer can transform the given value.
     *
     * @param value - The value to check.
     * @param key - The key of the value to check.
     * @returns A boolean indicating if the transformer can transform the value.
     */
    abstract canTransform(value: unknown, key: string): boolean;
    /**
     * Gets the transformer with the given id.
     *
     * @param transformerId - The id of the transformer to get.
     * @returns The transformer with the given id.
     */
    getTransformer(transformerId: string): Transformer;
    /**
     * Transforms the given object recursively.
     *
     * @param value - The value to transform.
     * @returns The transformed value.
     */
    transformObjectRecursively(value: object): GenericObject;
    /**
     * Transforms the given value.
     *
     * @param value - The value to transform.
     * @param key - The key of the value to transform.
     * @returns The transformed value.
     */
    abstract transformValue(value: unknown, key: string): unknown;
    /**
     * Gets the id of the transformer that can transform the given value.
     *
     * @param value - The value to get the transformer id for.
     * @param key - The key of the value to get the transformer id for.
     * @returns The id of the transformer that can transform the given value.
     */
    protected getTransformerId(value: unknown, key: string): null | string;
    /**
     * Restores the given value.
     *
     * @param transformedValue - The value to restore.
     * @param key - The key of the value to restore.
     * @returns The restored value.
     */
    protected abstract restoreValue(transformedValue: unknown, key: string): unknown;
    /**
     * Transforms the given value recursively.
     *
     * @param value - The value to transform.
     * @param key - The key of the value to transform.
     * @returns The transformed value.
     */
    private transformValueRecursively;
}