From 6528bb9166d40a07e76cfff4d59b3e141e57219c Mon Sep 17 00:00:00 2001
From: pfg <pfg@pfg.pw>
Date: Thu, 24 Jul 2025 15:05:33 -0700
Subject: [PATCH] test case for utf-16 change

---
 src/bun.js/RuntimeTranspilerCache.zig |  3 ++-
 test/bundler/bundler_string.test.ts   | 16 +++++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/bun.js/RuntimeTranspilerCache.zig b/src/bun.js/RuntimeTranspilerCache.zig
index 6c9baa3fd7..e4daed7ee2 100644
--- a/src/bun.js/RuntimeTranspilerCache.zig
+++ b/src/bun.js/RuntimeTranspilerCache.zig
@@ -12,7 +12,8 @@
 /// Version 13: Hoist `import.meta.require` definition, see #15738
 /// Version 14: Updated global defines table list.
 /// Version 15: Updated global defines table list.
-const expected_version = 15;
+/// Version 16: Emojis in strings are preserved in unicode output (node/web)
+const expected_version = 16;
 
 const debug = Output.scoped(.cache, false);
 const MINIMUM_CACHE_SIZE = 50 * 1024;
diff --git a/test/bundler/bundler_string.test.ts b/test/bundler/bundler_string.test.ts
index 88efba7780..7afd90e93d 100644
--- a/test/bundler/bundler_string.test.ts
+++ b/test/bundler/bundler_string.test.ts
@@ -1,4 +1,4 @@
-import { describe } from "bun:test";
+import { describe, expect } from "bun:test";
 import { dedent, itBundled } from "./expectBundled";
 
 interface TemplateStringTest {
@@ -89,6 +89,20 @@ const templateStringTests: Record<string, TemplateStringTest> = {
 };
 
 describe("bundler", () => {
+  // Test for emoji output in bun build
+  itBundled("string/EmojiDirectOutput", {
+    files: {
+      "a.js": `console.log("😀");`,
+    },
+    outfile: "out.js",
+    onAfterBundle(api) {
+      const content = api.readFile("out.js");
+      expect(content).toContain("😀");
+      expect(content).not.toContain("\\ud83d");
+      expect(content).not.toContain("\\ude00");
+    },
+  });
+
   for (const key in templateStringTests) {
     const test = templateStringTests[key];
     if ([test.capture, test.captureRaw, test.print].filter(x => x !== undefined).length !== 1) {