From 4cc499b5a60c8d85101c604ca457a212a4ff0a26 Mon Sep 17 00:00:00 2001
From: Ivan Goncharov <ivan.goncharov.ua@gmail.com>
Date: Thu, 11 Jun 2020 16:19:04 +0300
Subject: [PATCH] ExecutionResult: add 'extensions' field

---
 src/execution/execute.d.ts | 8 +++++++-
 src/execution/execute.js   | 3 +++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/execution/execute.d.ts b/src/execution/execute.d.ts
index f927d9082dc..834e2fcb164 100644
--- a/src/execution/execute.d.ts
+++ b/src/execution/execute.d.ts
@@ -43,11 +43,17 @@ export interface ExecutionContext {
  *
  *   - `errors` is included when any errors occurred as a non-empty array.
  *   - `data` is the result of a successful execution of the query.
+ *   - `extensions` is reserved for implementors to extend the protocol however they see fit,
+ *     and hence there are no additional restrictions on its contents.
  */
-export interface ExecutionResult<TData = { [key: string]: any }> {
+export interface ExecutionResult<
+  TData = { [key: string]: any },
+  TExtensions = { [key: string]: any }
+> {
   errors?: ReadonlyArray<GraphQLError>;
   // TS_SPECIFIC: TData. Motivation: https://github.com/graphql/graphql-js/pull/2490#issuecomment-639154229
   data?: TData | null;
+  extensions?: TExtensions;
 }
 
 export interface ExecutionArgs {
diff --git a/src/execution/execute.js b/src/execution/execute.js
index 821b6e403f5..4dff1ff3cef 100644
--- a/src/execution/execute.js
+++ b/src/execution/execute.js
@@ -109,10 +109,13 @@ export type ExecutionContext = {|
  *
  *   - `errors` is included when any errors occurred as a non-empty array.
  *   - `data` is the result of a successful execution of the query.
+ *   - `extensions` is reserved for implementors to extend the protocol however they see fit,
+ *     and hence there are no additional restrictions on its contents.
  */
 export type ExecutionResult = {|
   errors?: $ReadOnlyArray<GraphQLError>,
   data?: ObjMap<mixed> | null,
+  extensions?: ObjMap<mixed>,
 |};
 
 export type ExecutionArgs = {|