diff --git a/tests/baselines/reference/destructuringPropertyParameters1.errors.txt b/tests/baselines/reference/destructuringPropertyParameters1.errors.txt
index d4ed1e27cc0..87debfb17ae 100644
--- a/tests/baselines/reference/destructuringPropertyParameters1.errors.txt
+++ b/tests/baselines/reference/destructuringPropertyParameters1.errors.txt
@@ -2,18 +2,15 @@ tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(22
 tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(22,35): error TS2339: Property 'y' does not exist on type 'C1'.
 tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(22,43): error TS2339: Property 'y' does not exist on type 'C1'.
 tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(22,52): error TS2339: Property 'z' does not exist on type 'C1'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(25,26): error TS2339: Property 'x' does not exist on type 'C2'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(25,35): error TS2339: Property 'y' does not exist on type 'C2'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(25,43): error TS2339: Property 'y' does not exist on type 'C2'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(25,52): error TS2339: Property 'z' does not exist on type 'C2'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(28,23): error TS1005: ':' expected.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29,26): error TS2339: Property 'x' does not exist on type 'C3'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29,35): error TS2339: Property 'y' does not exist on type 'C3'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29,43): error TS2339: Property 'y' does not exist on type 'C3'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29,52): error TS2339: Property 'z' does not exist on type 'C3'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(25,30): error TS2339: Property 'x' does not exist on type 'C2'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(25,36): error TS2339: Property 'y' does not exist on type 'C2'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(25,42): error TS2339: Property 'z' does not exist on type 'C2'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29,30): error TS2339: Property 'x' does not exist on type 'C3'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29,36): error TS2339: Property 'y' does not exist on type 'C3'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29,42): error TS2339: Property 'z' does not exist on type 'C3'.
 
 
-==== tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts (13 errors) ====
+==== tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts (10 errors) ====
     class C1 {
         constructor(public [x, y, z]: string[]) {
         }
@@ -46,26 +43,20 @@ tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts(29
 !!! error TS2339: Property 'z' does not exist on type 'C1'.
     
     var c2 = new C2(["10", 10, !!10]);
-    var useC2Properties = c2.x === c2.y && c2.y === c2.z;
-                             ~
+    var [c2_x, c2_y, c2_z] = [c2.x, c2.y, c2.z];
+                                 ~
 !!! error TS2339: Property 'x' does not exist on type 'C2'.
-                                      ~
+                                       ~
 !!! error TS2339: Property 'y' does not exist on type 'C2'.
-                                              ~
-!!! error TS2339: Property 'y' does not exist on type 'C2'.
-                                                       ~
+                                             ~
 !!! error TS2339: Property 'z' does not exist on type 'C2'.
     
     var c3 = new C3({x: 0, y: "", z: false});
-    c3 = new C3({x: 0, "y", z: true});
-                          ~
-!!! error TS1005: ':' expected.
-    var useC3Properties = c3.x === c3.y && c3.y === c3.z;
-                             ~
+    c3 = new C3({x: 0, "y": "y", z: true});
+    var [c3_x, c3_y, c3_z] = [c3.x, c3.y, c3.z];
+                                 ~
 !!! error TS2339: Property 'x' does not exist on type 'C3'.
-                                      ~
+                                       ~
 !!! error TS2339: Property 'y' does not exist on type 'C3'.
-                                              ~
-!!! error TS2339: Property 'y' does not exist on type 'C3'.
-                                                       ~
+                                             ~
 !!! error TS2339: Property 'z' does not exist on type 'C3'.
\ No newline at end of file
diff --git a/tests/baselines/reference/destructuringPropertyParameters1.js b/tests/baselines/reference/destructuringPropertyParameters1.js
new file mode 100644
index 00000000000..95f3bc9736f
--- /dev/null
+++ b/tests/baselines/reference/destructuringPropertyParameters1.js
@@ -0,0 +1,61 @@
+//// [destructuringPropertyParameters1.ts]
+class C1 {
+    constructor(public [x, y, z]: string[]) {
+    }
+}
+
+type TupleType1 = [string, number, boolean];
+
+class C2 {
+    constructor(public [x, y, z]: TupleType1) {
+    }
+}
+
+type ObjType1 = { x: number; y: string; z: boolean }
+
+class C3 {
+    constructor(public { x, y, z }: ObjType1) {
+    }
+}
+
+var c1 = new C1([]);
+c1 = new C1(["larry", "{curly}", "moe"]);
+var useC1Properties = c1.x === c1.y && c1.y === c1.z;
+
+var c2 = new C2(["10", 10, !!10]);
+var [c2_x, c2_y, c2_z] = [c2.x, c2.y, c2.z];
+
+var c3 = new C3({x: 0, y: "", z: false});
+c3 = new C3({x: 0, "y": "y", z: true});
+var [c3_x, c3_y, c3_z] = [c3.x, c3.y, c3.z];
+
+//// [destructuringPropertyParameters1.js]
+var C1 = (function () {
+    function C1(_a) {
+        var x = _a[0], y = _a[1], z = _a[2];
+        this.[x, y, z] = [x, y, z];
+    }
+    return C1;
+})();
+var C2 = (function () {
+    function C2(_a) {
+        var x = _a[0], y = _a[1], z = _a[2];
+        this.[x, y, z] = [x, y, z];
+    }
+    return C2;
+})();
+var C3 = (function () {
+    function C3(_a) {
+        var x = _a.x, y = _a.y, z = _a.z;
+        this.{ x, y, z } = { x, y, z };
+    }
+    return C3;
+})();
+var c1 = new C1([]);
+c1 = new C1(["larry", "{curly}", "moe"]);
+var useC1Properties = c1.x === c1.y && c1.y === c1.z;
+var c2 = new C2(["10", 10, !!10]);
+var _a = [c2.x, c2.y, c2.z], c2_x = _a[0], c2_y = _a[1], c2_z = _a[2];
+var c3 = new C3({ x: 0, y: "", z: false });
+c3 = new C3({ x: 0, "y": "y", z: true });
+var _b = [c3.x, c3.y, c3.z], c3_x = _b[0], c3_y = _b[1], c3_z = _b[2];
diff --git a/tests/baselines/reference/destructuringPropertyParameters4.errors.txt b/tests/baselines/reference/destructuringPropertyParameters4.errors.txt
index f8c9e899ebb..a83fec307af 100644
--- a/tests/baselines/reference/destructuringPropertyParameters4.errors.txt
+++ b/tests/baselines/reference/destructuringPropertyParameters4.errors.txt
@@ -4,9 +4,9 @@ tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(5,
 tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(10,21): error TS2339: Property 'a' does not exist on type 'C1<T, U, V>'.
 tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(14,21): error TS2339: Property 'b' does not exist on type 'C1<T, U, V>'.
 tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(18,21): error TS2339: Property 'c' does not exist on type 'C1<T, U, V>'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(24,24): error TS2339: Property 'x' does not exist on type 'C2'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(24,34): error TS2339: Property 'y' does not exist on type 'C2'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(24,44): error TS2339: Property 'z' does not exist on type 'C2'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(24,24): error TS2339: Property 'a' does not exist on type 'C2'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(24,34): error TS2339: Property 'b' does not exist on type 'C2'.
+tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(24,44): error TS2339: Property 'c' does not exist on type 'C2'.
 
 
 ==== tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts (9 errors) ====
@@ -45,13 +45,13 @@ tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts(24
     
     class C2 extends C1<number, string, boolean> {
         public doSomethingWithSuperProperties() {
-            return `${this.x} ${this.y} ${this.z}`;
+            return `${this.a} ${this.b} ${this.c}`;
                            ~
-!!! error TS2339: Property 'x' does not exist on type 'C2'.
+!!! error TS2339: Property 'a' does not exist on type 'C2'.
                                      ~
-!!! error TS2339: Property 'y' does not exist on type 'C2'.
+!!! error TS2339: Property 'b' does not exist on type 'C2'.
                                                ~
-!!! error TS2339: Property 'z' does not exist on type 'C2'.
+!!! error TS2339: Property 'c' does not exist on type 'C2'.
         }
     }
     
\ No newline at end of file
diff --git a/tests/baselines/reference/destructuringPropertyParameters4.js b/tests/baselines/reference/destructuringPropertyParameters4.js
index 02784ad5f82..4aa796a4f37 100644
--- a/tests/baselines/reference/destructuringPropertyParameters4.js
+++ b/tests/baselines/reference/destructuringPropertyParameters4.js
@@ -22,7 +22,7 @@ class C1<T, U, V> {
 
 class C2 extends C1<number, string, boolean> {
     public doSomethingWithSuperProperties() {
-        return `${this.x} ${this.y} ${this.z}`;
+        return `${this.a} ${this.b} ${this.c}`;
     }
 }
 
@@ -59,7 +59,7 @@ var C2 = (function (_super) {
         _super.apply(this, arguments);
     }
     C2.prototype.doSomethingWithSuperProperties = function () {
-        return `${this.x} ${this.y} ${this.z}`;
+        return `${this.a} ${this.b} ${this.c}`;
     };
     return C2;
 })(C1);
diff --git a/tests/baselines/reference/destructuringPropertyParameters5.errors.txt b/tests/baselines/reference/destructuringPropertyParameters5.errors.txt
index 4531b82d647..cdb9bc15476 100644
--- a/tests/baselines/reference/destructuringPropertyParameters5.errors.txt
+++ b/tests/baselines/reference/destructuringPropertyParameters5.errors.txt
@@ -10,10 +10,9 @@ tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts(11
   Types of property '0' are incompatible.
     Type '{ x1: number; x2: string; x3: boolean; }' is not assignable to type '{ x: number; y: string; z: boolean; }'.
       Property 'x' is missing in type '{ x1: number; x2: string; x3: boolean; }'.
-tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts(11,56): error TS1005: ',' expected.
 
 
-==== tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts (10 errors) ====
+==== tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts (9 errors) ====
     type ObjType1 = { x: number; y: string; z: boolean }
     type TupleType1 = [ObjType1, number, string]
     
@@ -40,12 +39,10 @@ tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts(11
         }
     }
     
-    var a = new C1([{ x1: 10, x2: "", x3: true }, "", false);
-                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    var a = new C1([{ x1: 10, x2: "", x3: true }, "", false]);
+                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 !!! error TS2345: Argument of type '[{ x1: number; x2: string; x3: boolean; }, string, boolean]' is not assignable to parameter of type '[{ x: number; y: string; z: boolean; }, number, string]'.
 !!! error TS2345:   Types of property '0' are incompatible.
 !!! error TS2345:     Type '{ x1: number; x2: string; x3: boolean; }' is not assignable to type '{ x: number; y: string; z: boolean; }'.
 !!! error TS2345:       Property 'x' is missing in type '{ x1: number; x2: string; x3: boolean; }'.
-                                                           ~
-!!! error TS1005: ',' expected.
     var [a_x1, a_x2, a_x3, a_y, a_z] = [a.x1, a.x2, a.x3, a.y, a.z];
\ No newline at end of file
diff --git a/tests/baselines/reference/destructuringPropertyParameters5.js b/tests/baselines/reference/destructuringPropertyParameters5.js
new file mode 100644
index 00000000000..16f551a24b7
--- /dev/null
+++ b/tests/baselines/reference/destructuringPropertyParameters5.js
@@ -0,0 +1,26 @@
+//// [destructuringPropertyParameters5.ts]
+type ObjType1 = { x: number; y: string; z: boolean }
+type TupleType1 = [ObjType1, number, string]
+
+class C1 {
+    constructor(public [{ x1, x2, x3 }, y, z]: TupleType1) {
+        var foo: any = x1 || x2 || x3 || y || z;
+        var bar: any = this.x1 || this.x2 || this.x3 || this.y || this.z;
+    }
+}
+
+var a = new C1([{ x1: 10, x2: "", x3: true }, "", false]);
+var [a_x1, a_x2, a_x3, a_y, a_z] = [a.x1, a.x2, a.x3, a.y, a.z];
+
+//// [destructuringPropertyParameters5.js]
+var C1 = (function () {
+    function C1(_a) {
+        var _b = _a[0], x1 = _b.x1, x2 = _b.x2, x3 = _b.x3, y = _a[1], z = _a[2];
+        this.[{ x1, x2, x3 }, y, z] = [{ x1, x2, x3 }, y, z];
+        var foo = x1 || x2 || x3 || y || z;
+        var bar = this.x1 || this.x2 || this.x3 || this.y || this.z;
+    }
+    return C1;
+})();
+var a = new C1([{ x1: 10, x2: "", x3: true }, "", false]);
+var _a = [a.x1, a.x2, a.x3, a.y, a.z], a_x1 = _a[0], a_x2 = _a[1], a_x3 = _a[2], a_y = _a[3], a_z = _a[4];
diff --git a/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts b/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts
index 8571db338e8..ba73adc9fde 100644
--- a/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts
+++ b/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters1.ts
@@ -22,8 +22,8 @@ c1 = new C1(["larry", "{curly}", "moe"]);
 var useC1Properties = c1.x === c1.y && c1.y === c1.z;
 
 var c2 = new C2(["10", 10, !!10]);
-var useC2Properties = c2.x === c2.y && c2.y === c2.z;
+var [c2_x, c2_y, c2_z] = [c2.x, c2.y, c2.z];
 
 var c3 = new C3({x: 0, y: "", z: false});
-c3 = new C3({x: 0, "y", z: true});
-var useC3Properties = c3.x === c3.y && c3.y === c3.z;
\ No newline at end of file
+c3 = new C3({x: 0, "y": "y", z: true});
+var [c3_x, c3_y, c3_z] = [c3.x, c3.y, c3.z];
\ No newline at end of file
diff --git a/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts b/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts
index e8a494b2274..7a83e5f4d4b 100644
--- a/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts
+++ b/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters4.ts
@@ -22,6 +22,6 @@ class C1<T, U, V> {
 
 class C2 extends C1<number, string, boolean> {
     public doSomethingWithSuperProperties() {
-        return `${this.x} ${this.y} ${this.z}`;
+        return `${this.a} ${this.b} ${this.c}`;
     }
 }
diff --git a/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts b/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts
index 94ec1fe27b5..02f9b780ad9 100644
--- a/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts
+++ b/tests/cases/conformance/es6/destructuring/destructuringPropertyParameters5.ts
@@ -8,5 +8,5 @@ class C1 {
     }
 }
 
-var a = new C1([{ x1: 10, x2: "", x3: true }, "", false);
+var a = new C1([{ x1: 10, x2: "", x3: true }, "", false]);
 var [a_x1, a_x2, a_x3, a_y, a_z] = [a.x1, a.x2, a.x3, a.y, a.z];
\ No newline at end of file