Added tests for let/const variable declarations in catch clause (with the same name)

tests/baselines/reference/redeclareParameterInCatchBlock.errors.txt

@@ -0,0 +1,31 @@
+tests/cases/compiler/redeclareParameterInCatchBlock.ts(5,11): error TS2492: Cannot redeclare identifier 'e' in catch clause
+tests/cases/compiler/redeclareParameterInCatchBlock.ts(11,9): error TS2492: Cannot redeclare identifier 'e' in catch clause
+
+
+==== tests/cases/compiler/redeclareParameterInCatchBlock.ts (2 errors) ====
+    
+    try {
+    
+    } catch(e) {
+        const e = null;
+              ~
+!!! error TS2492: Cannot redeclare identifier 'e' in catch clause
+    }
+    
+    try {
+    
+    } catch(e) {
+        let e;
+            ~
+!!! error TS2492: Cannot redeclare identifier 'e' in catch clause
+    }
+    
+    try {
+    
+    } catch(e) {
+        function test() {
+            let e;
+        }
+    }
+    
+    

tests/baselines/reference/redeclareParameterInCatchBlock.js

@@ -0,0 +1,42 @@
+//// [redeclareParameterInCatchBlock.ts]
+
+try {
+
+} catch(e) {
+    const e = null;
+}
+
+try {
+
+} catch(e) {
+    let e;
+}
+
+try {
+
+} catch(e) {
+    function test() {
+        let e;
+    }
+}
+
+
+
+//// [redeclareParameterInCatchBlock.js]
+try {
+}
+catch (e) {
+    const e = null;
+}
+try {
+}
+catch (e) {
+    let e;
+}
+try {
+}
+catch (e) {
+    function test() {
+        let e;
+    }
+}

tests/cases/compiler/redeclareParameterInCatchBlock.ts

@@ -0,0 +1,22 @@
+// @target: es6
+
+try {
+
+} catch(e) {
+    const e = null;
+}
+
+try {
+
+} catch(e) {
+    let e;
+}
+
+try {
+
+} catch(e) {
+    function test() {
+        let e;
+    }
+}
+