Fix capturing variables declared via destructuring (#KT-14535 fixed).

compiler/testData/codegen/box/multiDecl/VarCapturedInFunctionLiteral.kt

@@ -1,5 +1,3 @@
-// TODO: enable JS backend when issue KT-14535 is fixed
-// IGNORE_BACKEND: JS
 class A {
     operator fun component1() = 1
     operator fun component2() = 2

compiler/testData/codegen/box/multiDecl/VarCapturedInLocalFunction.kt

@@ -1,5 +1,3 @@
-// TODO: enable JS backend when issue KT-14535 is fixed
-// IGNORE_BACKEND: JS
 class A {
 }
 

compiler/testData/codegen/box/multiDecl/VarCapturedInObjectLiteral.kt

@@ -1,5 +1,3 @@
-// TODO: enable JS backend when issue KT-14535 is fixed
-// IGNORE_BACKEND: JS
 class A {
     operator fun component1() = 1
     operator fun component2() = 2

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/MultiDeclarationTestsGenerated.java

@@ -31,24 +31,6 @@ import java.util.regex.Pattern;
 @TestDataPath("$PROJECT_ROOT")
 @RunWith(JUnit3RunnerWithInners.class)
 public class MultiDeclarationTestsGenerated extends AbstractMultiDeclarationTests {
-    @TestMetadata("VarCapturedInFunctionLiteral.kt")
-    public void ignoredVarCapturedInFunctionLiteral() throws Exception {
-        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/multiDecl/VarCapturedInFunctionLiteral.kt");
-        doTest(fileName);
-    }
-
-    @TestMetadata("VarCapturedInLocalFunction.kt")
-    public void ignoredVarCapturedInLocalFunction() throws Exception {
-        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/multiDecl/VarCapturedInLocalFunction.kt");
-        doTest(fileName);
-    }
-
-    @TestMetadata("VarCapturedInObjectLiteral.kt")
-    public void ignoredVarCapturedInObjectLiteral() throws Exception {
-        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/multiDecl/VarCapturedInObjectLiteral.kt");
-        doTest(fileName);
-    }
-
     public void testAllFilesPresentInMultiDecl() throws Exception {
         KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/codegen/box/multiDecl"), Pattern.compile("^(.+)\\.kt$"), true);
     }
@@ -119,6 +101,24 @@ public class MultiDeclarationTestsGenerated extends AbstractMultiDeclarationTest
         doTest(fileName);
     }
 
+    @TestMetadata("VarCapturedInFunctionLiteral.kt")
+    public void testVarCapturedInFunctionLiteral() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/multiDecl/VarCapturedInFunctionLiteral.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("VarCapturedInLocalFunction.kt")
+    public void testVarCapturedInLocalFunction() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/multiDecl/VarCapturedInLocalFunction.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("VarCapturedInObjectLiteral.kt")
+    public void testVarCapturedInObjectLiteral() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/multiDecl/VarCapturedInObjectLiteral.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("compiler/testData/codegen/box/multiDecl/forIterator")
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)

js/js.translator/src/org/jetbrains/kotlin/js/translate/expression/DestructuringDeclarationTranslator.java

@@ -28,6 +28,7 @@ import org.jetbrains.kotlin.js.translate.callTranslator.CallTranslator;
 import org.jetbrains.kotlin.js.translate.context.TranslationContext;
 import org.jetbrains.kotlin.js.translate.general.AbstractTranslator;
 import org.jetbrains.kotlin.js.translate.reference.CallExpressionTranslator;
+import org.jetbrains.kotlin.js.translate.utils.JsAstUtils;
 import org.jetbrains.kotlin.psi.KtDestructuringDeclaration;
 import org.jetbrains.kotlin.psi.KtDestructuringDeclarationEntry;
 import org.jetbrains.kotlin.resolve.BindingContext;
@@ -37,7 +38,9 @@ import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall;
 import java.util.ArrayList;
 import java.util.List;
 
+import static org.jetbrains.kotlin.js.translate.context.Namer.getCapturedVarAccessor;
 import static org.jetbrains.kotlin.js.translate.utils.InlineUtils.setInlineCallMetadata;
+import static org.jetbrains.kotlin.resolve.BindingContextUtils.isVarCapturedInClosure;
 
 public class DestructuringDeclarationTranslator extends AbstractTranslator {
 
@@ -92,6 +95,11 @@ public class DestructuringDeclarationTranslator extends AbstractTranslator {
             }
 
             JsName name =  context().getNameForDescriptor(descriptor);
+            if (isVarCapturedInClosure(context().bindingContext(), descriptor)) {
+                JsNameRef alias = getCapturedVarAccessor(name.makeRef());
+                entryInitializer = JsAstUtils.wrapValue(alias, entryInitializer);
+            }
+
             jsVars.add(new JsVars.JsVar(name, entryInitializer));
         }
         return new JsVars(jsVars, true);