Add Deno.symbols and move internal fields for test (#3693)

1 files changed, 10 insertions, 0 deletions

diff --git a/cli/js/internals_test.ts b/cli/js/internals_test.ts
new file mode 100644
index 000000000..055995fdf
--- /dev/null
+++ b/cli/js/internals_test.ts
@@ -0,0 +1,10 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { test, assert } from "./test_util.ts";
+
+test(function internalsExists(): void {
+  const {
+    stringifyArgs
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  } = Deno[Deno.symbols.internal] as any;
+  assert(!!stringifyArgs);
+});