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Add changelog for #13783 #13811

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16 changes: 16 additions & 0 deletions changelog_unreleased/typescript/13764.md
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#### 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>;
```