From 564a75ab37f4e73c4ac618e959a7457779d923fa Mon Sep 17 00:00:00 2001
From: michaelm <michael.mitchell@airtable.com>
Date: Sat, 6 Jul 2024 01:59:49 -0400
Subject: [PATCH] fix(codegen): missing TypeParameters in TSConstructSignature
 (#4063)

---
 crates/oxc_codegen/src/gen.rs   | 3 +++
 crates/oxc_codegen/tests/mod.rs | 1 +
 2 files changed, 4 insertions(+)

diff --git a/crates/oxc_codegen/src/gen.rs b/crates/oxc_codegen/src/gen.rs
index 44702f6ea..d86e0c123 100644
--- a/crates/oxc_codegen/src/gen.rs
+++ b/crates/oxc_codegen/src/gen.rs
@@ -3106,6 +3106,9 @@ impl<'a, const MINIFY: bool> Gen<MINIFY> for TSSignature<'a> {
             }
             Self::TSConstructSignatureDeclaration(signature) => {
                 p.print_str(b"new ");
+                if let Some(type_parameters) = signature.type_parameters.as_ref() {
+                    type_parameters.gen(p, ctx);
+                }
                 p.print_str(b"(");
                 signature.params.gen(p, ctx);
                 p.print_str(b")");
diff --git a/crates/oxc_codegen/tests/mod.rs b/crates/oxc_codegen/tests/mod.rs
index d214631f9..8d327196f 100644
--- a/crates/oxc_codegen/tests/mod.rs
+++ b/crates/oxc_codegen/tests/mod.rs
@@ -200,6 +200,7 @@ fn typescript() {
         false,
     );
     test_ts("let foo: { <T>(t: T): void }", "let foo: {<T>(t: T): void};\n", false);
+    test_ts("let foo: { new <T>(t: T): void }", "let foo: {new <T>(t: T): void};\n", false);
     test_ts("function <const T>(){}", "function<const T>() {}\n", false);
     test_ts("class A {m?(): void}", "class A {\n\tm?(): void;\n}\n", false);
     test_ts(