import { type MetadataKey, type MetadataValue } from '../types';
export declare class MetadataUtil {
    /**
     * Defines metadata on a target object.
     */
    static define<K extends MetadataKey, V extends MetadataValue<K>>(key: K, value: V, target: Function, propertyKey?: string | symbol): void;
    /**
     * Retrieves metadata from a target object.
     */
    static get<K extends MetadataKey, V extends MetadataValue<K> = MetadataValue<K>>(key: K, target: Function, propertyKey?: string | symbol): V;
    /**
     * Sets metadata on a target object.
     */
    static set<K extends MetadataKey, V extends MetadataValue<K>>(key: K, value: V, target: Function, propertyKey?: string | symbol): void;
    /**
     * Adds a value to an array-type metadata key.
     */
    static add<K extends Exclude<MetadataKey, 'MODULE' | 'PREFIX'>, V extends MetadataValue<K>, T extends V[number]>(key: K, target: Function, value: T, propertyKey?: string | symbol): void;
}