import { BindingAddress } from './bindings';
export declare class Metadata<T extends object = Record<string, unknown>> {
    data: T;
    extend(obj: Partial<T>): void;
}
export declare function useMetadata<T extends Record<string, unknown>>(key: BindingAddress<Metadata<T>>): import("@kraftr/errors").Return<Metadata<T>, import("./errors").ContextNotFound | import("./errors").SourceNotDefined>;