export declare class Metadata<T> {
    private key;
    constructor(key: string | symbol);
    define(value: T, target: Object): void;
    get(target: Object): T | undefined;
}
export declare function defineDecoratedMethod(decorators: MethodDecorator[], method: (this: Record<symbol | string, unknown>) => void, target: Object, propertyName: symbol | string): void;