1 files changed, 22 insertions, 0 deletions
diff --git a/test/cli/run/require-cache-bug-5188.js b/test/cli/run/require-cache-bug-5188.js
new file mode 100644
index 000000000..5b14e6b4c
--- /dev/null
+++ b/test/cli/run/require-cache-bug-5188.js
@@ -0,0 +1,22 @@
+const { strictEqual, ok } = require("assert");
+
+Loader.registry.set("bad", { evaluated: false });
+strictEqual(require.cache.bad, undefined);
+ok(!Object.hasOwn(require.cache, "bad"));
+ok(!Object.getOwnPropertyNames(require.cache).includes("bad"));
+
+// hard to simplify this test case, but importing this would cause require.cache.extract to be set
+require("msgpackr-extract");
+
+strictEqual(require.cache["extract"], undefined);
+ok(!("extract" in require.cache)); // https://github.com/oven-sh/bun/issues/5898
+ok(!Object.hasOwnProperty.call(require.cache, "extract"));
+ok(!Object.getOwnPropertyNames(require.cache).includes("extract"));
+
+for (const key of Object.keys(require.cache)) {
+  if (!require.cache[key]) {
+    throw new Error("require.cache has an undefined value that was in it's keys");
+  }
+}
+
+console.log("--pass--");