From 39621a8979e782fabce53ee744490c794ccad7bb Mon Sep 17 00:00:00 2001
From: Sosuke Suzuki <sosuke.suzuki@dr-ubie.com>
Date: Sun, 6 Nov 2022 17:52:07 +0900
Subject: [PATCH 1/2] Add changelog

---
 changelog_unreleased/typescript/13764.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 changelog_unreleased/typescript/13764.md

diff --git a/changelog_unreleased/typescript/13764.md b/changelog_unreleased/typescript/13764.md
new file mode 100644
index 000000000000..6d0a3d3bff65
--- /dev/null
+++ b/changelog_unreleased/typescript/13764.md
@@ -0,0 +1,16 @@
+#### Support TypeScript 4.9 (#13764, #13783 by @sosukesuzuki)
+
+Support [TypeScript 4.9](https://devblogs.microsoft.com/typescript/announcing-typescript-4-9) features!
+
+##### [`satisfies` operator](https://devblogs.microsoft.com/typescript/announcing-typescript-4-9-beta/#the-satisfies-operator)
+
+Supported by only `babel-ts` parser.
+
+<!-- prettier-ignore -->
+```tsx
+const palette = {
+  red: [255, 0, 0],
+  green: "#00ff00",
+  blue: [0, 0, 255]
+} satisfies Record<Colors, string | RGB>;
+

From 3d3bcae347d282864f50f0be942154c84c78b1c0 Mon Sep 17 00:00:00 2001
From: Sosuke Suzuki <sosuke.suzuki@dr-ubie.com>
Date: Sun, 6 Nov 2022 17:54:02 +0900
Subject: [PATCH 2/2] Fix

---
 changelog_unreleased/typescript/13764.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/changelog_unreleased/typescript/13764.md b/changelog_unreleased/typescript/13764.md
index 6d0a3d3bff65..e6096a1ae4d8 100644
--- a/changelog_unreleased/typescript/13764.md
+++ b/changelog_unreleased/typescript/13764.md
@@ -13,4 +13,4 @@ const palette = {
   green: "#00ff00",
   blue: [0, 0, 255]
 } satisfies Record<Colors, string | RGB>;
-
+```