From 416df1e895d6dad4ac90814ef7c41e14c03696d0 Mon Sep 17 00:00:00 2001
From: Divy Srivastava <dj.srivastava23@gmail.com>
Date: Fri, 21 Jun 2024 19:21:59 +0530
Subject: fix(ext/node): add ServerResponse#appendHeader (#24216)

---
 ext/node/polyfills/http.ts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'ext')

diff --git a/ext/node/polyfills/http.ts b/ext/node/polyfills/http.ts
index c6c112a50..f009d8a9e 100644
--- a/ext/node/polyfills/http.ts
+++ b/ext/node/polyfills/http.ts
@@ -1420,6 +1420,26 @@ export class ServerResponse extends NodeWritable {
     return this;
   }
 
+  appendHeader(name: string, value: string | string[]) {
+    if (Array.isArray(value)) {
+      this.#hasNonStringHeaders = true;
+    }
+    if (this.#headers[name] === undefined) {
+      this.#headers[name] = value;
+    } else {
+      if (!Array.isArray(this.#headers[name])) {
+        this.#headers[name] = [this.#headers[name]];
+      }
+      const header = this.#headers[name];
+      if (Array.isArray(value)) {
+        header.push(...value);
+      } else {
+        header.push(value);
+      }
+    }
+    return this;
+  }
+
   getHeader(name: string) {
     return this.#headers[name];
   }
-- 
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