import 'reflect-metadata';
import { TypedPropertyDecorator, Ctor } from '../types';
/** Decorators for metadata purposes. */
export declare abstract class Metadata {
    /**
     * Associates a display name with the member to which it is applied.
     * @param val The name.
     */
    static readonly displayName: (val: string) => {
        (target: Function): void;
        (target: Object, propertyKey: string | symbol): void;
    };
    /**
     * Associates a description with the member to which it is applied.
     * @param val The description.
     */
    static readonly description: (val: string) => {
        (target: Function): void;
        (target: Object, propertyKey: string | symbol): void;
    };
    /**
     * Associates a format function with the member to which it is applied.
     * @param fn The format function.
     */
    static readonly format: <T>(fn: (val: T) => string) => TypedPropertyDecorator<T>;
    /** Associates a child's prototype data on the parent in which it appears. */
    static readonly model: <T extends Object>(ctor: Ctor<T>) => TypedPropertyDecorator<T | T[]>;
}