diff --git a/tests/baselines/reference/templateStringsArrayTypeDefinedInES5Mode.errors.txt b/tests/baselines/reference/templateStringsArrayTypeDefinedInES5Mode.errors.txt
new file mode 100644
index 00000000000..a5e05d986c1
--- /dev/null
+++ b/tests/baselines/reference/templateStringsArrayTypeDefinedInES5Mode.errors.txt
@@ -0,0 +1,25 @@
+tests/cases/compiler/templateStringsArrayTypeDefinedInES5Mode.ts(10,1): error TS1159: Tagged templates are only available when targeting ECMAScript 6 and higher.
+lib.d.ts(502,11): error TS2300: Duplicate identifier 'TemplateStringsArray'.
+tests/cases/compiler/templateStringsArrayTypeDefinedInES5Mode.ts(2,7): error TS2300: Duplicate identifier 'TemplateStringsArray'.
+tests/cases/compiler/templateStringsArrayTypeDefinedInES5Mode.ts(8,3): error TS2345: Argument of type '{ [x: number]: undefined; }' is not assignable to parameter of type 'TemplateStringsArray'.
+  Property 'raw' is missing in type '{ [x: number]: undefined; }'.
+
+
+==== tests/cases/compiler/templateStringsArrayTypeDefinedInES5Mode.ts (3 errors) ====
+    
+    class TemplateStringsArray {
+          ~~~~~~~~~~~~~~~~~~~~
+!!! error TS2300: Duplicate identifier 'TemplateStringsArray'.
+    }
+    
+    function f(x: TemplateStringsArray, y: number, z: number) {
+    }
+    
+    f({}, 10, 10);
+      ~~
+!!! error TS2345: Argument of type '{ [x: number]: undefined; }' is not assignable to parameter of type 'TemplateStringsArray'.
+!!! error TS2345:   Property 'raw' is missing in type '{ [x: number]: undefined; }'.
+    
+    f `abcdef${ 1234 }${ 5678 }ghijkl`;
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1159: Tagged templates are only available when targeting ECMAScript 6 and higher.
\ No newline at end of file
diff --git a/tests/baselines/reference/templateStringsArrayTypeNotDefinedES5Mode.errors.txt b/tests/baselines/reference/templateStringsArrayTypeNotDefinedES5Mode.errors.txt
new file mode 100644
index 00000000000..6b2d29139ed
--- /dev/null
+++ b/tests/baselines/reference/templateStringsArrayTypeNotDefinedES5Mode.errors.txt
@@ -0,0 +1,18 @@
+tests/cases/compiler/templateStringsArrayTypeNotDefinedES5Mode.ts(7,1): error TS1159: Tagged templates are only available when targeting ECMAScript 6 and higher.
+tests/cases/compiler/templateStringsArrayTypeNotDefinedES5Mode.ts(5,3): error TS2345: Argument of type '{ [x: number]: undefined; }' is not assignable to parameter of type 'TemplateStringsArray'.
+  Property 'raw' is missing in type '{ [x: number]: undefined; }'.
+
+
+==== tests/cases/compiler/templateStringsArrayTypeNotDefinedES5Mode.ts (2 errors) ====
+    
+    function f(x: TemplateStringsArray, y: number, z: number) {
+    }
+    
+    f({}, 10, 10);
+      ~~
+!!! error TS2345: Argument of type '{ [x: number]: undefined; }' is not assignable to parameter of type 'TemplateStringsArray'.
+!!! error TS2345:   Property 'raw' is missing in type '{ [x: number]: undefined; }'.
+    
+    f `abcdef${ 1234 }${ 5678 }ghijkl`;
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1159: Tagged templates are only available when targeting ECMAScript 6 and higher.
\ No newline at end of file
diff --git a/tests/baselines/reference/templateStringsArrayTypeRedefinedInES6Mode.errors.txt b/tests/baselines/reference/templateStringsArrayTypeRedefinedInES6Mode.errors.txt
new file mode 100644
index 00000000000..8d5f554b42d
--- /dev/null
+++ b/tests/baselines/reference/templateStringsArrayTypeRedefinedInES6Mode.errors.txt
@@ -0,0 +1,22 @@
+lib.d.ts(502,11): error TS2300: Duplicate identifier 'TemplateStringsArray'.
+tests/cases/compiler/templateStringsArrayTypeRedefinedInES6Mode.ts(2,7): error TS2300: Duplicate identifier 'TemplateStringsArray'.
+tests/cases/compiler/templateStringsArrayTypeRedefinedInES6Mode.ts(8,3): error TS2345: Argument of type '{ [x: number]: undefined; }' is not assignable to parameter of type 'TemplateStringsArray'.
+  Property 'raw' is missing in type '{ [x: number]: undefined; }'.
+
+
+==== tests/cases/compiler/templateStringsArrayTypeRedefinedInES6Mode.ts (2 errors) ====
+    
+    class TemplateStringsArray {
+          ~~~~~~~~~~~~~~~~~~~~
+!!! error TS2300: Duplicate identifier 'TemplateStringsArray'.
+    }
+    
+    function f(x: TemplateStringsArray, y: number, z: number) {
+    }
+    
+    f({}, 10, 10);
+      ~~
+!!! error TS2345: Argument of type '{ [x: number]: undefined; }' is not assignable to parameter of type 'TemplateStringsArray'.
+!!! error TS2345:   Property 'raw' is missing in type '{ [x: number]: undefined; }'.
+    
+    f `abcdef${ 1234 }${ 5678 }ghijkl`;
\ No newline at end of file
diff --git a/tests/baselines/reference/templateStringsArrayTypeRedefinedInES6Mode.js b/tests/baselines/reference/templateStringsArrayTypeRedefinedInES6Mode.js
new file mode 100644
index 00000000000..22ce6831f00
--- /dev/null
+++ b/tests/baselines/reference/templateStringsArrayTypeRedefinedInES6Mode.js
@@ -0,0 +1,22 @@
+//// [templateStringsArrayTypeRedefinedInES6Mode.ts]
+
+class TemplateStringsArray {
+}
+
+function f(x: TemplateStringsArray, y: number, z: number) {
+}
+
+f({}, 10, 10);
+
+f `abcdef${ 1234 }${ 5678 }ghijkl`;
+
+//// [templateStringsArrayTypeRedefinedInES6Mode.js]
+var TemplateStringsArray = (function () {
+    function TemplateStringsArray() {
+    }
+    return TemplateStringsArray;
+})();
+function f(x, y, z) {
+}
+f({}, 10, 10);
+f `abcdef${1234}${5678}ghijkl`;
diff --git a/tests/cases/compiler/templateStringsArrayTypeDefinedInES5Mode.ts b/tests/cases/compiler/templateStringsArrayTypeDefinedInES5Mode.ts
new file mode 100644
index 00000000000..1a73b7eb430
--- /dev/null
+++ b/tests/cases/compiler/templateStringsArrayTypeDefinedInES5Mode.ts
@@ -0,0 +1,11 @@
+// @target: es5
+
+class TemplateStringsArray {
+}
+
+function f(x: TemplateStringsArray, y: number, z: number) {
+}
+
+f({}, 10, 10);
+
+f `abcdef${ 1234 }${ 5678 }ghijkl`;
\ No newline at end of file
diff --git a/tests/cases/compiler/templateStringsArrayTypeNotDefinedES5Mode.ts b/tests/cases/compiler/templateStringsArrayTypeNotDefinedES5Mode.ts
new file mode 100644
index 00000000000..3b166baa5c1
--- /dev/null
+++ b/tests/cases/compiler/templateStringsArrayTypeNotDefinedES5Mode.ts
@@ -0,0 +1,8 @@
+// @target: es5
+
+function f(x: TemplateStringsArray, y: number, z: number) {
+}
+
+f({}, 10, 10);
+
+f `abcdef${ 1234 }${ 5678 }ghijkl`;
\ No newline at end of file
diff --git a/tests/cases/compiler/templateStringsArrayTypeRedefinedInES6Mode.ts b/tests/cases/compiler/templateStringsArrayTypeRedefinedInES6Mode.ts
new file mode 100644
index 00000000000..c28026ef27d
--- /dev/null
+++ b/tests/cases/compiler/templateStringsArrayTypeRedefinedInES6Mode.ts
@@ -0,0 +1,11 @@
+// @target: es6
+
+class TemplateStringsArray {
+}
+
+function f(x: TemplateStringsArray, y: number, z: number) {
+}
+
+f({}, 10, 10);
+
+f `abcdef${ 1234 }${ 5678 }ghijkl`;
\ No newline at end of file