diff --git a/test/TypeScript/src/federated/ChainWithDelay.lf b/test/TypeScript/src/federated/ChainWithDelay.lf
new file mode 100644
index 0000000000..0c774a841e
--- /dev/null
+++ b/test/TypeScript/src/federated/ChainWithDelay.lf
@@ -0,0 +1,20 @@
+/**
+ * Demonstration that monotonic NET hypothesis is invalid.
+ * 
+ * @author Edward A. Lee
+ * @author Youri Su
+ */
+ target TypeScript {
+    timeout: 3 msec
+}
+import Count from "../lib/Count.lf";
+import InternalDelay from "../lib/InternalDelay.lf";
+import TestCount from "../lib/TestCount.lf";
+
+federated reactor {
+    c = new Count(period = 1 msec);
+    i = new InternalDelay(delay = 500 usec);
+    t = new TestCount(numInputs = 3);
+    c.out -> i.inp;
+    i.out -> t.inp;
+}
diff --git a/test/TypeScript/src/federated/TopLevelArtifacts.lf b/test/TypeScript/src/federated/TopLevelArtifacts.lf
new file mode 100644
index 0000000000..188fdc3246
--- /dev/null
+++ b/test/TypeScript/src/federated/TopLevelArtifacts.lf
@@ -0,0 +1,43 @@
+/**
+ * Test whether top-level reactions, actions, and ports are handled appropriately.
+ * 
+ * Currently, these artifacts are replicated on all federates.
+ * 
+ * @note This just tests for the correctness of the code generation. These top-level
+ * artifacts might be disallowed in the future.
+ * @author Youri Su
+ */
+ 
+ target TypeScript {
+    timeout: 1 msec
+};
+ 
+ import Count from "../lib/Count.lf";
+ import TestCount from "../lib/TestCount.lf";
+ 
+ federated reactor {
+    state successes:number(0);
+    logical action act;
+    reaction (startup) {=
+        successes++;
+    =}
+    timer t(0, 1 sec);
+    reaction (t) -> act {=
+        successes++;
+        actions.act.schedule(0, null);
+    =}
+    reaction (act) {=
+        successes++;
+    =}
+    
+    c = new Count();
+    tc = new TestCount();
+    c.out -> tc.inp;
+    
+    reaction (shutdown) {=
+        if (successes != 3) {
+            util.requestErrorStop(`Failed to properly execute top-level reactions`);
+        }
+        console.log(`SUCCESS!`);
+    =}
+}
diff --git a/test/TypeScript/src/lib/InternalDelay.lf b/test/TypeScript/src/lib/InternalDelay.lf
new file mode 100644
index 0000000000..63ca3a9969
--- /dev/null
+++ b/test/TypeScript/src/lib/InternalDelay.lf
@@ -0,0 +1,17 @@
+/**
+ *  @author Youri Su
+ */
+target TypeScript;
+reactor InternalDelay (
+    delay:TimeValue(10 msec)
+) {
+    input inp:number;
+    output out:number;
+    logical action d:number;
+    reaction(inp) -> d {=
+        actions.d.schedule(delay, inp as number);
+    =}
+    reaction(d) -> out {=
+        out = d;
+    =}
+}