import 'reflect-metadata';
export declare function nested(target: object, propertyKey: string | symbol): void;
export declare function nested(value: undefined, context: ClassFieldDecoratorContext): void;
/**
 * Checks whether the given property is marked as a nested sub-projection.
 * @param target - The class prototype.
 * @param propertyKey - The property name.
 * @returns True if the property is marked as nested; false otherwise.
 */
export declare function isNested(target: object, propertyKey: string): boolean;
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