import { InterfaceReferenceMetadata } from "../metadata";
/**
 * Describes the implementation of an interface.
 */
export interface InterfaceSpec {
    interfaceName: string;
    qualifier?: string | undefined;
}
export declare function renderInterfaceSpec({ interfaceName, qualifier }: InterfaceSpec): string;
export interface SingleImplementationSpec extends InterfaceSpec {
    all?: undefined;
}
export interface AllImplementationsSpec extends Pick<InterfaceSpec, "interfaceName"> {
    all: true;
}
/**
 * Describes a reference to one or more implementations of an interface.
 */
export type ReferenceSpec = SingleImplementationSpec | AllImplementationsSpec;
export declare function parseReferenceSpec(metadata: InterfaceReferenceMetadata): ReferenceSpec;
export declare function isSingleImplementationSpec(spec: ReferenceSpec): spec is SingleImplementationSpec;
export declare function isAllImplementationsSpec(spec: ReferenceSpec): spec is AllImplementationsSpec;