import { GraphQLDirective, GraphQLNamedType, GraphQLSchema } from 'graphql/type';
export type NamedTypeTransformer = (type: GraphQLNamedType) => GraphQLNamedType | null;
export type DirectiveTransformer = (directive: GraphQLDirective) => GraphQLDirective | null;
export declare function transformSchema(schema: GraphQLSchema, namedTypeTransformers: ReadonlyArray<NamedTypeTransformer>, directiveTransformers?: ReadonlyArray<DirectiveTransformer>): GraphQLSchema;