[node:http] Fix return type for `getHeader()` (#3007)

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/test/js/node/http/node-http.test.ts b/test/js/node/http/node-http.test.ts
index 726453217..b1910a1f7 100644
--- a/test/js/node/http/node-http.test.ts
+++ b/test/js/node/http/node-http.test.ts
@@ -398,8 +398,11 @@ describe("node:http", () => {
           });
           res.on("error", err => done(err));
         });
-        req.end();
         expect(req.getHeader("X-Test")).toBe("test");
+        // node returns undefined
+        // Headers returns null
+        expect(req.getHeader("X-Not-Exists")).toBe(undefined);
+        req.end();
       });
     });