Test cases to verify the privacy error reporting is done on correct node

Author: sheetalkamat

tests/baselines/reference/declarationEmitDestructuringPrivacyError.errors.txt

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+tests/cases/compiler/declarationEmitDestructuringPrivacyError.ts(4,20): error TS4025: Exported variable 'y' has or is using private name 'c'.
+
+
+==== tests/cases/compiler/declarationEmitDestructuringPrivacyError.ts (1 errors) ====
+    module m {
+        class c {
+        }
+        export var [x, y, z] = [10, new c(), 30];
+                       ~
+!!! error TS4025: Exported variable 'y' has or is using private name 'c'.
+    }

tests/baselines/reference/declarationEmitDestructuringPrivacyError.js

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+//// [declarationEmitDestructuringPrivacyError.ts]
+module m {
+    class c {
+    }
+    export var [x, y, z] = [10, new c(), 30];
+}
+
+//// [declarationEmitDestructuringPrivacyError.js]
+var m;
+(function (m) {
+    var c = (function () {
+        function c() {
+        }
+        return c;
+    })();
+    _a = [10, new c(), 30], m.x = _a[0], m.y = _a[1], m.z = _a[2];
+    var _a;
+})(m || (m = {}));

tests/cases/compiler/declarationEmitDestructuringPrivacyError.ts

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+// @declaration: true
+module m {
+    class c {
+    }
+    export var [x, y, z] = [10, new c(), 30];
+}