From ecf732fe03df2dd5a355cc2c7912245164a48301 Mon Sep 17 00:00:00 2001
From: Saihajpreet Singh <saihajpreet.singh@gmail.com>
Date: Wed, 31 Mar 2021 11:05:16 -0500
Subject: [PATCH] TS: use proper type for async generator (#3009)

---
 integrationTests/ts/tsconfig.json      | 2 +-
 src/subscription/mapAsyncIterator.d.ts | 4 ++--
 src/subscription/subscribe.d.ts        | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/integrationTests/ts/tsconfig.json b/integrationTests/ts/tsconfig.json
index ea6266120c..03106e8e86 100644
--- a/integrationTests/ts/tsconfig.json
+++ b/integrationTests/ts/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "module": "commonjs",
-    "lib": ["es6", "esnext.asynciterable"],
+    "lib": ["es2019", "es2020.string"],
     "strict": true,
     "noEmit": true,
     "types": []
diff --git a/src/subscription/mapAsyncIterator.d.ts b/src/subscription/mapAsyncIterator.d.ts
index ecf2e51cd3..fb031ba3bf 100644
--- a/src/subscription/mapAsyncIterator.d.ts
+++ b/src/subscription/mapAsyncIterator.d.ts
@@ -5,7 +5,7 @@ import { PromiseOrValue } from '../jsutils/PromiseOrValue';
  * which produces values mapped via calling the callback function.
  */
 export function mapAsyncIterator<T, U>(
-  iterable: AsyncIterable<T>,
+  iterable: AsyncIterable<T> | AsyncGenerator<T, void, void>,
   callback: (arg: T) => PromiseOrValue<U>,
   rejectCallback?: (arg: any) => PromiseOrValue<U>,
-): any; // TS_SPECIFIC: AsyncGenerator requires typescript@3.6
+): AsyncGenerator<U, void, void>;
diff --git a/src/subscription/subscribe.d.ts b/src/subscription/subscribe.d.ts
index 2dcfeed21e..46c00d3e92 100644
--- a/src/subscription/subscribe.d.ts
+++ b/src/subscription/subscribe.d.ts
@@ -39,7 +39,7 @@ export interface SubscriptionArgs {
  */
 export function subscribe(
   args: SubscriptionArgs,
-): Promise<AsyncIterableIterator<ExecutionResult> | ExecutionResult>;
+): Promise<AsyncGenerator<ExecutionResult, void, void> | ExecutionResult>;
 
 /**
  * Implements the "CreateSourceEventStream" algorithm described in the