[bun.js] Add `ShadowRealm`

1 files changed, 10 insertions, 0 deletions

diff --git a/integration/bunjs-only-snippets/shadow.test.js b/integration/bunjs-only-snippets/shadow.test.js
new file mode 100644
index 000000000..3fffcac90
--- /dev/null
+++ b/integration/bunjs-only-snippets/shadow.test.js
@@ -0,0 +1,10 @@
+import { describe, it, expect } from "bun:test";
+
+it("shadow realm works", () => {
+  const red = new ShadowRealm();
+  globalThis.someValue = 1;
+  // Affects only the ShadowRealm's global
+  const result = red.evaluate("globalThis.someValue = 2;");
+  expect(globalThis.someValue).toBe(1);
+  expect(result).toBe(2);
+});