export type OperationDeclarationKind = 'type' | 'interface';
export type OperationDeclarationKindConfig = {
    input?: OperationDeclarationKind;
    result?: OperationDeclarationKind;
};
export type NormalizedOperationDeclarationKindConfig = Required<OperationDeclarationKindConfig>;
export declare function normalizeOperationDeclarationKind(declarationKind: OperationDeclarationKind | OperationDeclarationKindConfig): NormalizedOperationDeclarationKindConfig;