import 'reflect-metadata';
export declare function getGlobalMeta<T>(key: string | symbol): T | undefined;
export declare function setGlobalMeta(key: string | symbol, value: any, source: object): void;
export declare function extractMeta<T>(key: string | symbol, source: object): T | undefined;
export declare function setMeta(key: string | symbol, value: any, source: object): void;