import type { GraphQLSchema } from '../type/schema';
declare enum BreakingChangeType {
  TYPE_REMOVED = 'TYPE_REMOVED',
  TYPE_CHANGED_KIND = 'TYPE_CHANGED_KIND',
  TYPE_REMOVED_FROM_UNION = 'TYPE_REMOVED_FROM_UNION',
  VALUE_REMOVED_FROM_ENUM = 'VALUE_REMOVED_FROM_ENUM',
  REQUIRED_INPUT_FIELD_ADDED = 'REQUIRED_INPUT_FIELD_ADDED',
  IMPLEMENTED_INTERFACE_REMOVED = 'IMPLEMENTED_INTERFACE_REMOVED',
  FIELD_REMOVED = 'FIELD_REMOVED',
  FIELD_CHANGED_KIND = 'FIELD_CHANGED_KIND',
  REQUIRED_ARG_ADDED = 'REQUIRED_ARG_ADDED',
  ARG_REMOVED = 'ARG_REMOVED',
  ARG_CHANGED_KIND = 'ARG_CHANGED_KIND',
  DIRECTIVE_REMOVED = 'DIRECTIVE_REMOVED',
  DIRECTIVE_ARG_REMOVED = 'DIRECTIVE_ARG_REMOVED',
  REQUIRED_DIRECTIVE_ARG_ADDED = 'REQUIRED_DIRECTIVE_ARG_ADDED',
  DIRECTIVE_REPEATABLE_REMOVED = 'DIRECTIVE_REPEATABLE_REMOVED',
  DIRECTIVE_LOCATION_REMOVED = 'DIRECTIVE_LOCATION_REMOVED',
}
export { BreakingChangeType };
declare enum DangerousChangeType {
  VALUE_ADDED_TO_ENUM = 'VALUE_ADDED_TO_ENUM',
  TYPE_ADDED_TO_UNION = 'TYPE_ADDED_TO_UNION',
  OPTIONAL_INPUT_FIELD_ADDED = 'OPTIONAL_INPUT_FIELD_ADDED',
  OPTIONAL_ARG_ADDED = 'OPTIONAL_ARG_ADDED',
  IMPLEMENTED_INTERFACE_ADDED = 'IMPLEMENTED_INTERFACE_ADDED',
  ARG_DEFAULT_VALUE_CHANGE = 'ARG_DEFAULT_VALUE_CHANGE',
}
export { DangerousChangeType };
export interface BreakingChange {
  type: BreakingChangeType;
  description: string;
}
export interface DangerousChange {
  type: DangerousChangeType;
  description: string;
}
/**
 * Given two schemas, returns an Array containing descriptions of all the types
 * of breaking changes covered by the other functions down below.
 */
export declare function findBreakingChanges(
  oldSchema: GraphQLSchema,
  newSchema: GraphQLSchema,
): Array<BreakingChange>;
/**
 * Given two schemas, returns an Array containing descriptions of all the types
 * of potentially dangerous changes covered by the other functions down below.
 */
export declare function findDangerousChanges(
  oldSchema: GraphQLSchema,
  newSchema: GraphQLSchema,
): Array<DangerousChange>;