export type Primitive = undefined | string | number | boolean | bigint;
type Values = Primitive | Primitive[];
export type Tuple<Value extends Values = Values> = {
    [key: string]: Value;
};
export interface MetadataFactory<Value extends Values> {
    getValue(): Tuple<Value> | Promise<Tuple<Value>>;
}
export type MetadataPlugin<Value extends Values = Values> = () => MetadataFactory<Value>;
export interface Metadata {
    getMetadata(): Promise<Record<string, Values>>;
}
export declare function createMetadataPlugin(plugins: MetadataPlugin[]): Metadata;
export {};