fix: exclude internal JS files from coverage (#20448)

1 files changed, 7 insertions, 0 deletions

diff --git a/cli/tests/testdata/coverage/no_internal_code_test.ts b/cli/tests/testdata/coverage/no_internal_code_test.ts
new file mode 100644
index 000000000..0cf46d252
--- /dev/null
+++ b/cli/tests/testdata/coverage/no_internal_code_test.ts
@@ -0,0 +1,7 @@
+const add = (a: number, b: number) => a + b;
+
+Deno.test(function addTest() {
+  if (add(2, 3) !== 5) {
+    throw new Error("fail");
+  }
+});