import type { MetadataKey } from '../core/sys/metadata.ts';
import type { Constructable } from '../decorator/index.ts';
import type { IMappedClassMetadataOptions, MappedClassMetadataKeys } from './type.ts';
export declare function registerMappedClassMetadataKey(target: object, metadataKey: MetadataKey, options?: IMappedClassMetadataOptions): void;
export declare function getMappedClassMetadataKeys(target: object): MappedClassMetadataKeys | undefined;
export declare function copyPropertiesOfClasses(target: Constructable, sources: Constructable[], filter?: Function): void;
export declare function copyProperties(target: object, source: object, keysIgnore: MetadataKey[], filter?: Function): void;
export declare function copyMetadataOfClasses(target: object, sources: object[], transform?: Function): void;
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