From 4bb5b7309de15dd14c5c6fbde3cdb95b30c9f158 Mon Sep 17 00:00:00 2001
From: Matt Brophy <matt@brophy.org>
Date: Tue, 6 Dec 2022 10:25:59 -0500
Subject: [PATCH 1/3] Remove instanceof Response checks in favor of duck typing

---
 packages/router/router.ts | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/packages/router/router.ts b/packages/router/router.ts
index 8bd5ae9f55..0979cf35f3 100644
--- a/packages/router/router.ts
+++ b/packages/router/router.ts
@@ -1988,7 +1988,7 @@ export function unstable_createStaticHandler(
     }
 
     let result = await queryImpl(request, location, matches);
-    if (result instanceof Response) {
+    if (isResponse(result)) {
       return result;
     }
 
@@ -2046,7 +2046,7 @@ export function unstable_createStaticHandler(
     }
 
     let result = await queryImpl(request, location, matches, match);
-    if (result instanceof Response) {
+    if (isResponse(result)) {
       return result;
     }
 
@@ -2087,7 +2087,7 @@ export function unstable_createStaticHandler(
       }
 
       let result = await loadRouteData(request, matches, routeMatch);
-      return result instanceof Response
+      return isResponse(result)
         ? result
         : {
             ...result,
@@ -2616,7 +2616,7 @@ async function callLoaderOrAction(
     request.signal.removeEventListener("abort", onReject);
   }
 
-  if (result instanceof Response) {
+  if (isResponse(result)) {
     let status = result.status;
 
     // Process redirects
@@ -3052,8 +3052,18 @@ function isRedirectResult(result?: DataResult): result is RedirectResult {
   return (result && result.type) === ResultType.redirect;
 }
 
+function isResponse(value: any): value is Response {
+  return (
+    value != null &&
+    typeof value.status === "number" &&
+    typeof value.statusText === "string" &&
+    typeof value.headers === "object" &&
+    typeof value.body !== "undefined"
+  );
+}
+
 function isRedirectResponse(result: any): result is Response {
-  if (!(result instanceof Response)) {
+  if (!isResponse(result)) {
     return false;
   }
 
@@ -3065,7 +3075,7 @@ function isRedirectResponse(result: any): result is Response {
 function isQueryRouteResponse(obj: any): obj is QueryRouteResponse {
   return (
     obj &&
-    obj.response instanceof Response &&
+    isResponse(obj.response) &&
     (obj.type === ResultType.data || ResultType.error)
   );
 }

From b60ed62d75768a602c98c11d650a0769baebecee Mon Sep 17 00:00:00 2001
From: Matt Brophy <matt@brophy.org>
Date: Tue, 6 Dec 2022 10:26:39 -0500
Subject: [PATCH 2/3] add changeset

---
 .changeset/curvy-hairs-deliver.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/curvy-hairs-deliver.md

diff --git a/.changeset/curvy-hairs-deliver.md b/.changeset/curvy-hairs-deliver.md
new file mode 100644
index 0000000000..bdb1ceaeba
--- /dev/null
+++ b/.changeset/curvy-hairs-deliver.md
@@ -0,0 +1,5 @@
+---
+"@remix-run/router": patch
+---
+
+Remove `instaanceof Response` checks in favor of duck typing

From 9fbf6463bf827456ca6de284e1d17edfa2ac23ad Mon Sep 17 00:00:00 2001
From: Matt Brophy <matt@brophy.org>
Date: Tue, 6 Dec 2022 11:35:43 -0500
Subject: [PATCH 3/3] Update .changeset/curvy-hairs-deliver.md

---
 .changeset/curvy-hairs-deliver.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.changeset/curvy-hairs-deliver.md b/.changeset/curvy-hairs-deliver.md
index bdb1ceaeba..5c017a0d16 100644
--- a/.changeset/curvy-hairs-deliver.md
+++ b/.changeset/curvy-hairs-deliver.md
@@ -2,4 +2,4 @@
 "@remix-run/router": patch
 ---
 
-Remove `instaanceof Response` checks in favor of duck typing
+Remove `instanceof Response` checks in favor of `isResponse`