import { GraphQLInputType, GraphQLOutputType, GraphQLNamedType } from 'graphql';
export declare function safeChangeForField(oldType: GraphQLOutputType, newType: GraphQLOutputType): boolean;
export declare function safeChangeForInputValue(oldType: GraphQLInputType, newType: GraphQLInputType): boolean;
export declare function getTypePrefix(type: GraphQLNamedType): string;
export declare function isPrimitive(type: GraphQLNamedType | string): boolean;
export declare function isForIntrospection(type: GraphQLNamedType | string): boolean;
