import { ForwardRef } from '../forwardRef';
import { Token } from '../types';
/**
 * Decorator to declare an injection on a non-static class property or constructor argument.
 *
 * When dealing with circular dependencies it is recommended to always use a {@link forwardRef} between the injectables that circulary reference each other.
 *
 * Constructor-Injections can also be inferred when the {@link https://www.typescriptlang.org/docs/handbook/decorators.html|emitDecoratorMetadata} option is enabled.
 *
 * @param token The token or a {@link forwardRef} for a token.
 *
 * @returns *PropertyDecorator* & *ParameterDecorator*
 */
export declare function Inject(token?: Token | ForwardRef<any>): PropertyDecorator & ParameterDecorator;