From bd895417924cd808636223a025a93b2ffbf36955 Mon Sep 17 00:00:00 2001
From: Patrick Wang <patrick.bohan.wang@gmail.com>
Date: Sun, 20 Apr 2025 23:40:34 -0700
Subject: [PATCH] Fix #519: Support `in` operator for useParams()

---
 .changeset/nice-oranges-mate.md | 5 +++++
 src/utils.ts                    | 3 +++
 2 files changed, 8 insertions(+)
 create mode 100644 .changeset/nice-oranges-mate.md

diff --git a/.changeset/nice-oranges-mate.md b/.changeset/nice-oranges-mate.md
new file mode 100644
index 00000000..09821507
--- /dev/null
+++ b/.changeset/nice-oranges-mate.md
@@ -0,0 +1,5 @@
+---
+"@solidjs/router": patch
+---
+
+Support `in` operator for useParams()
diff --git a/src/utils.ts b/src/utils.ts
index eb0c0b1c..d347fb2f 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -158,6 +158,9 @@ export function createMemoObject<T extends Record<string | symbol, unknown>>(fn:
     },
     ownKeys() {
       return Reflect.ownKeys(fn());
+    },
+    has(_, property) {
+      return property in fn();
     }
   });
 }