diff --git a/tests/baselines/reference/unreachableJavascriptChecked.errors.txt b/tests/baselines/reference/unreachableJavascriptChecked.errors.txt
new file mode 100644
index 00000000000..c66b342177f
--- /dev/null
+++ b/tests/baselines/reference/unreachableJavascriptChecked.errors.txt
@@ -0,0 +1,10 @@
+tests/cases/compiler/unreachable.js(3,5): error TS7027: Unreachable code detected.
+
+
+==== tests/cases/compiler/unreachable.js (1 errors) ====
+    function unreachable() {
+        return 1;
+        return 2;
+        ~~~~~~
+!!! error TS7027: Unreachable code detected.
+    }
\ No newline at end of file
diff --git a/tests/baselines/reference/unreachableJavascriptChecked.js b/tests/baselines/reference/unreachableJavascriptChecked.js
new file mode 100644
index 00000000000..6bf264bf3d2
--- /dev/null
+++ b/tests/baselines/reference/unreachableJavascriptChecked.js
@@ -0,0 +1,11 @@
+//// [unreachable.js]
+function unreachable() {
+    return 1;
+    return 2;
+}
+
+//// [unreachable.js]
+function unreachable() {
+    return 1;
+    return 2;
+}
diff --git a/tests/baselines/reference/unreachableJavascriptUnchecked.js b/tests/baselines/reference/unreachableJavascriptUnchecked.js
new file mode 100644
index 00000000000..6bf264bf3d2
--- /dev/null
+++ b/tests/baselines/reference/unreachableJavascriptUnchecked.js
@@ -0,0 +1,11 @@
+//// [unreachable.js]
+function unreachable() {
+    return 1;
+    return 2;
+}
+
+//// [unreachable.js]
+function unreachable() {
+    return 1;
+    return 2;
+}
diff --git a/tests/baselines/reference/unreachableJavascriptUnchecked.symbols b/tests/baselines/reference/unreachableJavascriptUnchecked.symbols
new file mode 100644
index 00000000000..f2db6a6a347
--- /dev/null
+++ b/tests/baselines/reference/unreachableJavascriptUnchecked.symbols
@@ -0,0 +1,7 @@
+=== tests/cases/compiler/unreachable.js ===
+function unreachable() {
+>unreachable : Symbol(unreachable, Decl(unreachable.js, 0, 0))
+
+    return 1;
+    return 2;
+}
diff --git a/tests/baselines/reference/unreachableJavascriptUnchecked.types b/tests/baselines/reference/unreachableJavascriptUnchecked.types
new file mode 100644
index 00000000000..266a9038875
--- /dev/null
+++ b/tests/baselines/reference/unreachableJavascriptUnchecked.types
@@ -0,0 +1,10 @@
+=== tests/cases/compiler/unreachable.js ===
+function unreachable() {
+>unreachable : () => 1 | 2
+
+    return 1;
+>1 : 1
+
+    return 2;
+>2 : 2
+}
diff --git a/tests/cases/compiler/unreachableJavascriptChecked.ts b/tests/cases/compiler/unreachableJavascriptChecked.ts
new file mode 100644
index 00000000000..4db98c4c8c4
--- /dev/null
+++ b/tests/cases/compiler/unreachableJavascriptChecked.ts
@@ -0,0 +1,8 @@
+// @Filename: unreachable.js
+// @allowJs: true
+// @checkJs: true
+// @outDir: out
+function unreachable() {
+    return 1;
+    return 2;
+}
\ No newline at end of file
diff --git a/tests/cases/compiler/unreachableJavascriptUnchecked.ts b/tests/cases/compiler/unreachableJavascriptUnchecked.ts
new file mode 100644
index 00000000000..d5b1f45e282
--- /dev/null
+++ b/tests/cases/compiler/unreachableJavascriptUnchecked.ts
@@ -0,0 +1,8 @@
+// @Filename: unreachable.js
+// @allowJs: true
+// @checkJs: false
+// @outDir: out
+function unreachable() {
+    return 1;
+    return 2;
+}
\ No newline at end of file