3 files changed, 22 insertions, 0 deletions
diff --git a/tests/specs/run/default_ts/__test__.jsonc b/tests/specs/run/default_ts/__test__.jsonc
new file mode 100644
index 000000000..07e3d8336
--- /dev/null
+++ b/tests/specs/run/default_ts/__test__.jsonc
@@ -0,0 +1,18 @@
+{
+  "tempDir": true,
+  "tests": {
+    "stdin": {
+      "args": "run -",
+      "input": "const x: string = \"foo\";console.log(x)",
+      "output": "foo\n"
+    },
+    "ext_flag": {
+      "args": "run --ext=ts as_ts.js",
+      "output": "foo\n"
+    },
+    "extensionless": {
+      "args": "run extensionless",
+      "output": "foo\n"
+    }
+  }
+}
diff --git a/tests/specs/run/default_ts/as_ts.js b/tests/specs/run/default_ts/as_ts.js
new file mode 100644
index 000000000..cef8995bc
--- /dev/null
+++ b/tests/specs/run/default_ts/as_ts.js
@@ -0,0 +1,2 @@
+const x: string = "foo";
+console.log(x);
diff --git a/tests/specs/run/default_ts/extensionless b/tests/specs/run/default_ts/extensionless
new file mode 100644
index 000000000..cef8995bc
--- /dev/null
+++ b/tests/specs/run/default_ts/extensionless
@@ -0,0 +1,2 @@
+const x: string = "foo";
+console.log(x);