flow like the river

BACK_BACK/node_modules/graphql/utilities/findDeprecatedUsages.d.ts

@@ -0,0 +1,21 @@
+import { GraphQLError } from '../error/GraphQLError';
+import { DocumentNode } from '../language/ast';
+import { GraphQLSchema } from '../type/schema';
+
+/**
+ * A validation rule which reports deprecated usages.
+ *
+ * Returns a list of GraphQLError instances describing each deprecated use.
+ *
+ * @deprecated Please use `validate` with `NoDeprecatedCustomRule` instead:
+ *
+ * ```
+ * import { validate, NoDeprecatedCustomRule } from 'graphql'
+ *
+ * const errors = validate(schema, document, [NoDeprecatedCustomRule])
+ * ```
+ */
+export function findDeprecatedUsages(
+  schema: GraphQLSchema,
+  ast: DocumentNode,
+): ReadonlyArray<GraphQLError>;