From de8d792e370e79e8de3bec1700c594189868c9e7 Mon Sep 17 00:00:00 2001
From: Ajay Ghanwat <ghanwat.ajay@workroot.in>
Date: Sun, 9 Aug 2026 12:58:02 +0530
Subject: [PATCH] fix(compiler): diagnose inline object component props

---
 packages/compiler/src/codegen.ts        |  7 +++++++
 packages/compiler/test/compiler.test.ts | 13 +++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/packages/compiler/src/codegen.ts b/packages/compiler/src/codegen.ts
index e19d57dd..08c23a3c 100644
--- a/packages/compiler/src/codegen.ts
+++ b/packages/compiler/src/codegen.ts
@@ -742,6 +742,13 @@ function renderNestedComponentInvocation(
         return ` ${attr.name}`;
       }
 
+      if (/^\s*\{\{[\s\S]*\}\}\s*$/.test(attr.value)) {
+        throw new Error(
+          `WRN-PROP-INLINE-OBJECT: '${attr.name}' uses an inline object or array prop. ` +
+            `Hoist it to state and pass ${attr.name}={yourState} instead.`,
+        );
+      }
+
       const wholeExpression = wholeAttributeExpression(attr.value);
 
       const compiledValue = wholeExpression
diff --git a/packages/compiler/test/compiler.test.ts b/packages/compiler/test/compiler.test.ts
index 45fcb76e..737e18b5 100644
--- a/packages/compiler/test/compiler.test.ts
+++ b/packages/compiler/test/compiler.test.ts
@@ -1083,6 +1083,19 @@ page Home {
 
   expect(output).toContain("__wrnexusPropAttr([");
 });
+test("rejects inline object props with a hoisting diagnostic", () => {
+  expect(() =>
+    generate(
+      parse(`component Example { view { <Child items={{ a: 1 }} /> } }`),
+    ),
+  ).toThrow("WRN-PROP-INLINE-OBJECT");
+
+  expect(() =>
+    generate(
+      parse(`component Example { state items = [{ a: 1 }] view { <Child items={items} /> } }`),
+    ),
+  ).not.toThrow();
+});
 test("component functions are available during server rendering", () => {
   const output = generate(
     parse(`