diff --git a/tests/baselines/reference/declarationFileOverwriteError.errors.txt b/tests/baselines/reference/declarationFileOverwriteError.errors.txt
new file mode 100644
index 00000000000..fbf4948c203
--- /dev/null
+++ b/tests/baselines/reference/declarationFileOverwriteError.errors.txt
@@ -0,0 +1,12 @@
+error TS5055: Cannot write file 'tests/cases/compiler/a.d.ts' which is one of the input files.
+
+
+!!! error TS5055: Cannot write file 'a.d.ts' which is one of the input files.
+==== tests/cases/compiler/a.d.ts (0 errors) ====
+    
+    declare class c {
+    }
+    
+==== tests/cases/compiler/a.ts (0 errors) ====
+    class d {
+    }
\ No newline at end of file
diff --git a/tests/baselines/reference/declarationFileOverwriteError.js b/tests/baselines/reference/declarationFileOverwriteError.js
new file mode 100644
index 00000000000..a9ae79f8ed6
--- /dev/null
+++ b/tests/baselines/reference/declarationFileOverwriteError.js
@@ -0,0 +1,17 @@
+//// [tests/cases/compiler/declarationFileOverwriteError.ts] ////
+
+//// [a.d.ts]
+
+declare class c {
+}
+
+//// [a.ts]
+class d {
+}
+
+//// [a.js]
+var d = (function () {
+    function d() {
+    }
+    return d;
+})();
diff --git a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.errors.txt b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.errors.txt
new file mode 100644
index 00000000000..b90bccbaf94
--- /dev/null
+++ b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.errors.txt
@@ -0,0 +1,12 @@
+error TS5055: Cannot write file 'tests/cases/compiler/out.d.ts' which is one of the input files.
+
+
+!!! error TS5055: Cannot write file 'out.d.ts' which is one of the input files.
+==== tests/cases/compiler/out.d.ts (0 errors) ====
+    
+    declare class c {
+    }
+    
+==== tests/cases/compiler/a.ts (0 errors) ====
+    class d {
+    }
\ No newline at end of file
diff --git a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.js b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.js
new file mode 100644
index 00000000000..34d9c95a005
--- /dev/null
+++ b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.js
@@ -0,0 +1,17 @@
+//// [tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts] ////
+
+//// [out.d.ts]
+
+declare class c {
+}
+
+//// [a.ts]
+class d {
+}
+
+//// [out.js]
+var d = (function () {
+    function d() {
+    }
+    return d;
+})();
diff --git a/tests/cases/compiler/declarationFileOverwriteError.ts b/tests/cases/compiler/declarationFileOverwriteError.ts
new file mode 100644
index 00000000000..b7ecb654002
--- /dev/null
+++ b/tests/cases/compiler/declarationFileOverwriteError.ts
@@ -0,0 +1,9 @@
+// @declaration: true
+
+// @Filename: a.d.ts
+declare class c {
+}
+
+// @FileName: a.ts 
+class d {
+}
\ No newline at end of file
diff --git a/tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts b/tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts
new file mode 100644
index 00000000000..b43c9a8b2e0
--- /dev/null
+++ b/tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts
@@ -0,0 +1,10 @@
+// @declaration: true
+// @out: tests/cases/compiler/out.js
+
+// @Filename: out.d.ts
+declare class c {
+}
+
+// @FileName: a.ts 
+class d {
+}
\ No newline at end of file