From b4502be51a2898308cd5fb5cea6f04c3e1c52c2b Mon Sep 17 00:00:00 2001
From: morluto <76467478+morluto@users.noreply.github.com>
Date: Sat, 24 Oct 2026 03:05:35 +0800
Subject: [PATCH] test(javascript): preserve exact empty property keys in
 declarations

---
 src/domain/webBundleAnalyzerAst.test.ts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/domain/webBundleAnalyzerAst.test.ts b/src/domain/webBundleAnalyzerAst.test.ts
index b3210d94fc..98a18795d0 100644
--- a/src/domain/webBundleAnalyzerAst.test.ts
+++ b/src/domain/webBundleAnalyzerAst.test.ts
@@ -4,6 +4,28 @@ import { expect, it } from "vitest";
 import { parseJavaScriptSource } from "./javascript/javascriptSourceParser.js";
 import { objectString } from "./webBundleAnalyzerAst.js";
 
+it.each([
+  { property: "[``]: 0", expected: "catalog" },
+  { property: '"": 0', expected: "catalog" },
+  { property: '[""]: 0', expected: "catalog" },
+  { property: "[`other`]: 0", expected: "catalog" },
+  { property: "[unknownKey]: 0", expected: undefined },
+])(
+  "preserves WebMCP identity beside exact unrelated keys: $property",
+  ({ property, expected }) => {
+    const file = parseJavaScriptSource(
+      `const declaration = {name:"catalog", ${property}};`,
+    );
+    const declaration = file?.program.body[0];
+    if (!t.isVariableDeclaration(declaration))
+      throw new Error("Expected variable declaration");
+    const object = declaration.declarations[0]?.init;
+    if (!t.isObjectExpression(object))
+      throw new Error("Expected object expression");
+    expect(objectString(object, "name")).toBe(expected);
+  },
+);
+
 it("reads WebMCP declaration strings through the exact-literal owner", () => {
   const file = parseJavaScriptSource(
     "const declaration = { name: `catalog`, description: `Browse catalog` }; const dynamic = { name: `catalog ${scope}` };",