From c0cf7c696cf454b49b35d8dae01ab111739dab46 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Markb=C3=A5ge?= <sebastian@calyptus.eu>
Date: Wed, 17 Apr 2024 12:29:08 -0400
Subject: [PATCH] Promote ASYNC_ITERATOR symbol to React Symbols (#28851)

So that when we end up referring to it in more places, it's only one.

We don't do this same pattern for regular `Symbol.iterator` because we
also support the string `"@@iterator"` for backwards compatibility.
---
 packages/react-client/src/ReactFlightClient.js | 3 +--
 packages/react-server/src/ReactFlightServer.js | 3 +--
 packages/shared/ReactSymbols.js                | 2 ++
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/react-client/src/ReactFlightClient.js b/packages/react-client/src/ReactFlightClient.js
index 1fb6ca6c2b0d1..574893125d535 100644
--- a/packages/react-client/src/ReactFlightClient.js
+++ b/packages/react-client/src/ReactFlightClient.js
@@ -65,6 +65,7 @@ import {
   REACT_LAZY_TYPE,
   REACT_ELEMENT_TYPE,
   REACT_POSTPONE_TYPE,
+  ASYNC_ITERATOR,
 } from 'shared/ReactSymbols';
 
 export type {CallServerCallback, EncodeFormActionCallback};
@@ -1245,8 +1246,6 @@ function startReadableStream<T>(
   resolveStream(response, id, stream, flightController);
 }
 
-const ASYNC_ITERATOR = Symbol.asyncIterator;
-
 function asyncIterator(this: $AsyncIterator<any, any, void>) {
   // Self referencing iterator.
   return this;
diff --git a/packages/react-server/src/ReactFlightServer.js b/packages/react-server/src/ReactFlightServer.js
index 254e26e675bd0..93924692d28f5 100644
--- a/packages/react-server/src/ReactFlightServer.js
+++ b/packages/react-server/src/ReactFlightServer.js
@@ -99,6 +99,7 @@ import {
   REACT_LAZY_TYPE,
   REACT_MEMO_TYPE,
   REACT_POSTPONE_TYPE,
+  ASYNC_ITERATOR,
 } from 'shared/ReactSymbols';
 
 import {
@@ -201,8 +202,6 @@ if (
 
 const ObjectPrototype = Object.prototype;
 
-const ASYNC_ITERATOR = Symbol.asyncIterator;
-
 type JSONValue =
   | string
   | boolean
diff --git a/packages/shared/ReactSymbols.js b/packages/shared/ReactSymbols.js
index 32f3ef654068d..26662aa325e7c 100644
--- a/packages/shared/ReactSymbols.js
+++ b/packages/shared/ReactSymbols.js
@@ -60,3 +60,5 @@ export function getIteratorFn(maybeIterable: ?any): ?() => ?Iterator<any> {
   }
   return null;
 }
+
+export const ASYNC_ITERATOR = Symbol.asyncIterator;