From 67dba4b5a78f585c2f74c8531ba7b6cfd72050be Mon Sep 17 00:00:00 2001
From: Firede <firede@firede.us>
Date: Mon, 27 Mar 2017 17:16:24 +0800
Subject: [PATCH] add `findDeprecatedUsages`.

---
 types/graphql/utilities/findDeprecatedUsages.d.ts | 13 +++++++++++++
 types/graphql/utilities/index.d.ts                |  3 +++
 2 files changed, 16 insertions(+)
 create mode 100644 types/graphql/utilities/findDeprecatedUsages.d.ts

diff --git a/types/graphql/utilities/findDeprecatedUsages.d.ts b/types/graphql/utilities/findDeprecatedUsages.d.ts
new file mode 100644
index 0000000000..58e9ae1685
--- /dev/null
+++ b/types/graphql/utilities/findDeprecatedUsages.d.ts
@@ -0,0 +1,13 @@
+import { GraphQLSchema } from '../type/schema';
+import { DocumentNode } from '../language/ast';
+import { GraphQLError } from '../error/GraphQLError';
+
+/**
+ * A validation rule which reports deprecated usages.
+ *
+ * Returns a list of GraphQLError instances describing each deprecated use.
+ */
+export function findDeprecatedUsages(
+    schema: GraphQLSchema,
+    ast: DocumentNode
+): Array<GraphQLError>
diff --git a/types/graphql/utilities/index.d.ts b/types/graphql/utilities/index.d.ts
index 47cfd70ff9..8815046735 100644
--- a/types/graphql/utilities/index.d.ts
+++ b/types/graphql/utilities/index.d.ts
@@ -73,3 +73,6 @@ export { assertValidName } from './assertValidName';
 // Compares two GraphQLSchemas and detects breaking changes.
 export { findBreakingChanges } from './findBreakingChanges';
 export { BreakingChange } from './findBreakingChanges';
+
+// Report all deprecated usage within a GraphQL document.
+export { findDeprecatedUsages } from './findDeprecatedUsages';