import { ConstValueNode, DocumentNode, FieldNode, GraphQLArgument, GraphQLError, GraphQLInputField, GraphQLInputType, GraphQLNamedType, GraphQLOutputType, GraphQLSchema, Kind } from 'graphql';
type GraphQLInputValue = (GraphQLArgument | GraphQLInputField) & {
    default?: {
        literal: ConstValueNode;
        value?: never;
    } | {
        value: unknown;
        literal?: never;
    };
};
export declare function getDefaultValue(inputValue: GraphQLInputValue): unknown;
export declare function hasDefaultValue(inputValue: GraphQLInputValue): boolean;
export declare function defaultValuesAreEqual(oldInputValue: GraphQLInputValue | null | undefined, newInputValue: GraphQLInputValue): boolean;
export declare function safeChangeForField(oldType: GraphQLOutputType, newType: GraphQLOutputType): boolean;
export declare function safeChangeForInputValue(oldType: GraphQLInputType, newType: GraphQLInputType): boolean;
export declare function getKind(type: GraphQLNamedType): Kind;
export declare function getTypePrefix(type: GraphQLNamedType): string;
export declare function isPrimitive(type: GraphQLNamedType | string): boolean;
export declare function isForIntrospection(type: GraphQLNamedType | string): boolean;
export declare function findDeprecatedUsages(schema: GraphQLSchema, ast: DocumentNode): Array<GraphQLError>;
export declare function removeFieldIfDirectives(node: FieldNode, directiveNames: string[]): FieldNode | null;
export declare function removeDirectives(node: FieldNode, directiveNames: string[]): FieldNode;
export declare function getReachableTypes(schema: GraphQLSchema): Set<string>;
export {};