export flow types from introspection query result

src/utilities/index.js

@@ -1,3 +1,4 @@
+/* @flow */
 /**
  *  Copyright (c) 2015, Facebook, Inc.
  *  All rights reserved.
@@ -37,3 +38,48 @@ export { isValidJSValue } from './isValidJSValue';
 
 // Determine if AST values adhere to a GraphQL type.
 export { isValidLiteralValue } from './isValidLiteralValue';
+
+
+// Export flow types.
+
+// Note: a future version of flow may support `export type {} from ''`, but
+// until then, this is a viable workaround.
+
+// IntrospectionQuery is the type of the result expected by requesting
+// GraphQL with `introspectionQuery`.
+import type {
+  IntrospectionQuery,
+  IntrospectionSchema,
+  IntrospectionType,
+  IntrospectionScalarType,
+  IntrospectionObjectType,
+  IntrospectionInterfaceType,
+  IntrospectionUnionType,
+  IntrospectionEnumType,
+  IntrospectionInputObjectType,
+  IntrospectionTypeRef,
+  IntrospectionNamedTypeRef,
+  IntrospectionListTypeRef,
+  IntrospectionNonNullTypeRef,
+  IntrospectionField,
+  IntrospectionInputValue,
+  IntrospectionEnumValue,
+  IntrospectionDirective,
+} from './introspectionQuery';
+export type IntrospectionQuery = IntrospectionQuery;
+export type IntrospectionSchema = IntrospectionSchema;
+export type IntrospectionType = IntrospectionType;
+export type IntrospectionScalarType = IntrospectionScalarType;
+export type IntrospectionObjectType = IntrospectionObjectType;
+export type IntrospectionInterfaceType = IntrospectionInterfaceType;
+export type IntrospectionUnionType = IntrospectionUnionType;
+export type IntrospectionEnumType = IntrospectionEnumType;
+export type IntrospectionInputObjectType = IntrospectionInputObjectType;
+export type IntrospectionTypeRef = IntrospectionTypeRef;
+export type IntrospectionNamedTypeRef = IntrospectionNamedTypeRef;
+export type IntrospectionListTypeRef = IntrospectionListTypeRef;
+export type IntrospectionNonNullTypeRef = IntrospectionNonNullTypeRef;
+export type IntrospectionField = IntrospectionField;
+export type IntrospectionInputValue = IntrospectionInputValue;
+export type IntrospectionEnumValue = IntrospectionEnumValue;
+export type IntrospectionDirective = IntrospectionDirective;