From e6e6cd65190091506e6b9cf2b7f29526ef1e4309 Mon Sep 17 00:00:00 2001
From: GlassBricks <24237065+GlassBricks@users.noreply.github.com>
Date: Sat, 27 Aug 2022 09:53:38 -0700
Subject: [PATCH] Support typescript 4.7 instantiation expressions

---
 src/transformation/visitors/typescript.ts | 1 +
 test/unit/expressions.spec.ts             | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/src/transformation/visitors/typescript.ts b/src/transformation/visitors/typescript.ts
index ab6c940f6..ddd319381 100644
--- a/src/transformation/visitors/typescript.ts
+++ b/src/transformation/visitors/typescript.ts
@@ -20,6 +20,7 @@ export const typescriptVisitors: Visitors = {
     [ts.SyntaxKind.InterfaceDeclaration]: () => undefined,
 
     [ts.SyntaxKind.NonNullExpression]: (node, context) => context.transformExpression(node.expression),
+    [ts.SyntaxKind.ExpressionWithTypeArguments]: (node, context) => context.transformExpression(node.expression),
     [ts.SyntaxKind.AsExpression]: transformAssertionExpression,
     [ts.SyntaxKind.TypeAssertionExpression]: transformAssertionExpression,
     [ts.SyntaxKind.NotEmittedStatement]: () => undefined,
diff --git a/test/unit/expressions.spec.ts b/test/unit/expressions.spec.ts
index 71c014fda..329b6317e 100644
--- a/test/unit/expressions.spec.ts
+++ b/test/unit/expressions.spec.ts
@@ -153,6 +153,14 @@ test("Non-null expression", () => {
     `.expectToMatchJsResult();
 });
 
+test("Typescript 4.7 instantiation expression", () => {
+    util.testFunction`
+        function foo<T>(x: T): T { return x; }
+        const bar = foo<number>;
+        return bar(3);
+    `.expectToMatchJsResult();
+});
+
 test.each([
     '"foobar"',
     "17",