diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index a2e76ea488e..a8e2d2b4055 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -8228,31 +8228,12 @@ namespace ts {
             return jsxElementType || anyType;
         }
 
-        function tagNamesAreEquivalent(lhs: EntityName, rhs: EntityName): boolean {
-            if (lhs.kind !== rhs.kind) {
-                return false;
-            }
-
-            if (lhs.kind === SyntaxKind.Identifier) {
-                return (<Identifier>lhs).text === (<Identifier>rhs).text;
-            }
-
-            return (<QualifiedName>lhs).right.text === (<QualifiedName>rhs).right.text &&
-                tagNamesAreEquivalent((<QualifiedName>lhs).left, (<QualifiedName>rhs).left);
-        }
-
         function checkJsxElement(node: JsxElement) {
             // Check attributes
             checkJsxOpeningLikeElement(node.openingElement);
 
-            // Check that the closing tag matches
-            if (!tagNamesAreEquivalent(node.openingElement.tagName, node.closingElement.tagName)) {
-                error(node.closingElement, Diagnostics.Expected_corresponding_JSX_closing_tag_for_0, getTextOfNode(node.openingElement.tagName));
-            }
-            else {
-                // Perform resolution on the closing tag so that rename/go to definition/etc work
-                getJsxElementTagSymbol(node.closingElement);
-            }
+            // Perform resolution on the closing tag so that rename/go to definition/etc work
+            getJsxElementTagSymbol(node.closingElement);
 
             // Check children
             for (const child of node.children) {
diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
index a43f3534df6..f7268d6d990 100644
--- a/src/compiler/diagnosticMessages.json
+++ b/src/compiler/diagnosticMessages.json
@@ -2586,5 +2586,9 @@
     "A type assertion expression is not allowed in the left-hand side of an exponentiation expression. Consider enclosing the expression in parentheses.": {
       "category": "Error",
       "code": 17007
+    },
+    "JSX element '{0}' has no corresponding closing tag.": {
+      "category": "Error",
+      "code": 17008
     }
 }
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index d412225cdf0..174ddb68546 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -6990,7 +6990,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
 
                     write(text);
                 }
-                write(`], function(${exportFunctionForFile}, __moduleName) {`);
+                write(`], function(${exportFunctionForFile}) {`);
                 writeLine();
                 increaseIndent();
                 const startIndex = emitDirectivePrologues(node.statements, /*startWithNewLine*/ true, /*ensureUseStrict*/ true);
diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 3dfe0985575..78a3b567ef3 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -3478,6 +3478,20 @@ namespace ts {
             return finishNode(node);
         }
 
+        function tagNamesAreEquivalent(lhs: EntityName, rhs: EntityName): boolean {
+            if (lhs.kind !== rhs.kind) {
+                return false;
+            }
+
+            if (lhs.kind === SyntaxKind.Identifier) {
+                return (<Identifier>lhs).text === (<Identifier>rhs).text;
+            }
+
+            return (<QualifiedName>lhs).right.text === (<QualifiedName>rhs).right.text &&
+                tagNamesAreEquivalent((<QualifiedName>lhs).left, (<QualifiedName>rhs).left);
+        }
+
+
         function parseJsxElementOrSelfClosingElement(inExpressionContext: boolean): JsxElement | JsxSelfClosingElement {
             const opening = parseJsxOpeningOrSelfClosingElement(inExpressionContext);
             let result: JsxElement | JsxSelfClosingElement;
@@ -3487,6 +3501,11 @@ namespace ts {
 
                 node.children = parseJsxChildren(node.openingElement.tagName);
                 node.closingElement = parseJsxClosingElement(inExpressionContext);
+
+                if (!tagNamesAreEquivalent(node.openingElement.tagName, node.closingElement.tagName)) {
+                    parseErrorAtPosition(node.closingElement.pos, node.closingElement.end - node.closingElement.pos, Diagnostics.Expected_corresponding_JSX_closing_tag_for_0, getTextOfNodeFromSourceText(sourceText, node.openingElement.tagName));
+                }
+
                 result = finishNode(node);
             }
             else {
@@ -3546,10 +3565,13 @@ namespace ts {
             while (true) {
                 token = scanner.reScanJsxToken();
                 if (token === SyntaxKind.LessThanSlashToken) {
+                    // Closing tag
                     break;
                 }
                 else if (token === SyntaxKind.EndOfFileToken) {
-                    parseErrorAtCurrentToken(Diagnostics.Expected_corresponding_JSX_closing_tag_for_0, getTextOfNodeFromSourceText(sourceText, openingTagName));
+                    // If we hit EOF, issue the error at the tag that lacks the closing element
+                    // rather than at the end of the file (which is useless)
+                    parseErrorAtPosition(openingTagName.pos, openingTagName.end - openingTagName.pos, Diagnostics.JSX_element_0_has_no_corresponding_closing_tag, getTextOfNodeFromSourceText(sourceText, openingTagName));
                     break;
                 }
                 result.push(parseJsxChild());
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index c9de6a0ed96..349c4a86efa 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -53,13 +53,13 @@ namespace ts {
         if (getRootLength(moduleName) !== 0 || nameStartsWithDotSlashOrDotDotSlash(moduleName)) {
             const failedLookupLocations: string[] = [];
             const candidate = normalizePath(combinePaths(containingDirectory, moduleName));
-            let resolvedFileName = loadNodeModuleFromFile(supportedExtensions, candidate, failedLookupLocations, host);
+            let resolvedFileName = loadNodeModuleFromFile(supportedExtensions, candidate, failedLookupLocations, /*onlyRecordFailures*/ false, host);
 
             if (resolvedFileName) {
                 return { resolvedModule: { resolvedFileName }, failedLookupLocations };
             }
 
-            resolvedFileName = loadNodeModuleFromDirectory(supportedExtensions, candidate, failedLookupLocations, host);
+            resolvedFileName = loadNodeModuleFromDirectory(supportedExtensions, candidate, failedLookupLocations, /*onlyRecordFailures*/ false,  host);
             return resolvedFileName
                 ? { resolvedModule: { resolvedFileName }, failedLookupLocations }
                 : { resolvedModule: undefined, failedLookupLocations };
@@ -69,12 +69,22 @@ namespace ts {
         }
     }
 
-    function loadNodeModuleFromFile(extensions: string[], candidate: string, failedLookupLocation: string[], host: ModuleResolutionHost): string {
+    /* @internal */
+    export function directoryProbablyExists(directoryName: string, host: { directoryExists?: (directoryName: string) => boolean } ): boolean {
+        // if host does not support 'directoryExists' assume that directory will exist
+        return !host.directoryExists || host.directoryExists(directoryName);
+    }
+
+    /**
+     * @param {boolean} onlyRecordFailures - if true then function won't try to actually load files but instead record all attempts as failures. This flag is necessary
+     * in cases when we know upfront that all load attempts will fail (because containing folder does not exists) however we still need to record all failed lookup locations. 
+     */
+    function loadNodeModuleFromFile(extensions: string[], candidate: string, failedLookupLocation: string[], onlyRecordFailures: boolean, host: ModuleResolutionHost): string {
         return forEach(extensions, tryLoad);
 
         function tryLoad(ext: string): string {
             const fileName = fileExtensionIs(candidate, ext) ? candidate : candidate + ext;
-            if (host.fileExists(fileName)) {
+            if (!onlyRecordFailures && host.fileExists(fileName)) {
                 return fileName;
             }
             else {
@@ -84,9 +94,10 @@ namespace ts {
         }
     }
 
-    function loadNodeModuleFromDirectory(extensions: string[], candidate: string, failedLookupLocation: string[], host: ModuleResolutionHost): string {
+    function loadNodeModuleFromDirectory(extensions: string[], candidate: string, failedLookupLocation: string[], onlyRecordFailures: boolean, host: ModuleResolutionHost): string {
         const packageJsonPath = combinePaths(candidate, "package.json");
-        if (host.fileExists(packageJsonPath)) {
+        const directoryExists = !onlyRecordFailures && directoryProbablyExists(candidate, host);
+        if (directoryExists && host.fileExists(packageJsonPath)) {
 
             let jsonContent: { typings?: string };
 
@@ -100,7 +111,8 @@ namespace ts {
             }
 
             if (typeof jsonContent.typings === "string") {
-                const result = loadNodeModuleFromFile(extensions, normalizePath(combinePaths(candidate, jsonContent.typings)), failedLookupLocation, host);
+                const path = normalizePath(combinePaths(candidate, jsonContent.typings));
+                const result = loadNodeModuleFromFile(extensions, path, failedLookupLocation, !directoryProbablyExists(getDirectoryPath(path), host), host);
                 if (result) {
                     return result;
                 }
@@ -111,7 +123,7 @@ namespace ts {
             failedLookupLocation.push(packageJsonPath);
         }
 
-        return loadNodeModuleFromFile(extensions, combinePaths(candidate, "index"), failedLookupLocation, host);
+        return loadNodeModuleFromFile(extensions, combinePaths(candidate, "index"), failedLookupLocation, !directoryExists, host);
     }
 
     function loadModuleFromNodeModules(moduleName: string, directory: string, host: ModuleResolutionHost): ResolvedModuleWithFailedLookupLocations {
@@ -121,14 +133,15 @@ namespace ts {
             const baseName = getBaseFileName(directory);
             if (baseName !== "node_modules") {
                 const nodeModulesFolder = combinePaths(directory, "node_modules");
+                const nodeModulesFolderExists = directoryProbablyExists(nodeModulesFolder, host);
                 const candidate = normalizePath(combinePaths(nodeModulesFolder, moduleName));
                 // Load only typescript files irrespective of allowJs option if loading from node modules
-                let result = loadNodeModuleFromFile(supportedTypeScriptExtensions, candidate, failedLookupLocations, host);
+                let result = loadNodeModuleFromFile(supportedTypeScriptExtensions, candidate, failedLookupLocations, !nodeModulesFolderExists, host);
                 if (result) {
                     return { resolvedModule: { resolvedFileName: result, isExternalLibraryImport: true }, failedLookupLocations };
                 }
 
-                result = loadNodeModuleFromDirectory(supportedTypeScriptExtensions, candidate, failedLookupLocations, host);
+                result = loadNodeModuleFromDirectory(supportedTypeScriptExtensions, candidate, failedLookupLocations, !nodeModulesFolderExists, host);
                 if (result) {
                     return { resolvedModule: { resolvedFileName: result, isExternalLibraryImport: true }, failedLookupLocations };
                 }
@@ -281,7 +294,8 @@ namespace ts {
             getCanonicalFileName,
             getNewLine: () => newLine,
             fileExists: fileName => sys.fileExists(fileName),
-            readFile: fileName => sys.readFile(fileName)
+            readFile: fileName => sys.readFile(fileName),
+            directoryExists: directoryName => sys.directoryExists(directoryName)
         };
     }
 
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index a5a30f1c092..7e45f488d67 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -2649,6 +2649,8 @@ namespace ts {
         // readFile function is used to read arbitrary text files on disk, i.e. when resolution procedure needs the content of 'package.json'
         // to determine location of bundled typings for node module
         readFile(fileName: string): string;
+
+        directoryExists?(directoryName: string): boolean;
     }
 
     export interface ResolvedModule {
diff --git a/src/harness/harnessLanguageService.ts b/src/harness/harnessLanguageService.ts
index fb5b6ce92aa..a0cac439729 100644
--- a/src/harness/harnessLanguageService.ts
+++ b/src/harness/harnessLanguageService.ts
@@ -267,6 +267,10 @@ namespace Harness.LanguageService {
         log(s: string): void { this.nativeHost.log(s); }
         trace(s: string): void { this.nativeHost.trace(s); }
         error(s: string): void { this.nativeHost.error(s); }
+        directoryExists(directoryName: string): boolean {
+            // for tests pessimistically assume that directory always exists
+            return true;
+        }
     }
 
     class ClassifierShimProxy implements ts.Classifier {
diff --git a/src/lib/dom.generated.d.ts b/src/lib/dom.generated.d.ts
index 0dff2cedc39..0144d752b99 100644
--- a/src/lib/dom.generated.d.ts
+++ b/src/lib/dom.generated.d.ts
@@ -321,6 +321,7 @@ interface AudioContext extends EventTarget {
     destination: AudioDestinationNode;
     listener: AudioListener;
     sampleRate: number;
+    state: string;
     createAnalyser(): AnalyserNode;
     createBiquadFilter(): BiquadFilterNode;
     createBuffer(numberOfChannels: number, length: number, sampleRate: number): AudioBuffer;
@@ -2774,6 +2775,7 @@ interface Element extends Node, GlobalEventHandlers, ElementTraversal, NodeSelec
     tagName: string;
     id: string;
     className: string;
+    innerHTML: string;
     getAttribute(name?: string): string;
     getAttributeNS(namespaceURI: string, localName: string): string;
     getAttributeNode(name: string): Attr;
@@ -2969,7 +2971,7 @@ interface Element extends Node, GlobalEventHandlers, ElementTraversal, NodeSelec
     removeAttributeNode(oldAttr: Attr): Attr;
     requestFullscreen(): void;
     requestPointerLock(): void;
-    setAttribute(name?: string, value?: string): void;
+    setAttribute(name: string, value: string): void;
     setAttributeNS(namespaceURI: string, qualifiedName: string, value: string): void;
     setAttributeNode(newAttr: Attr): Attr;
     setAttributeNodeNS(newAttr: Attr): Attr;
@@ -5512,7 +5514,7 @@ interface HTMLMediaElement extends HTMLElement {
       * Gets or sets the current playback position, in seconds.
       */
     preload: string;
-    readyState: any;
+    readyState: number;
     /**
       * Returns a TimeRanges object that represents the ranges of the current media resource that can be seeked.
       */
@@ -6169,6 +6171,7 @@ interface HTMLSelectElement extends HTMLElement {
       * Returns whether an element will successfully validate based on forms validation rules and constraints.
       */
     willValidate: boolean;
+    selectedOptions: HTMLCollection;
     /**
       * Adds an element to the areas, controlRange, or options collection.
       * @param element Variant of type Number that specifies the index position in the collection where the element is placed. If no value is given, the method places the element at the end of the collection.
diff --git a/src/lib/es6.d.ts b/src/lib/es6.d.ts
index 531dbf9e5ea..84128a01cf2 100644
--- a/src/lib/es6.d.ts
+++ b/src/lib/es6.d.ts
@@ -7,7 +7,7 @@ interface Symbol {
     /** Returns the primitive value of the specified object. */
     valueOf(): Object;
 
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "Symbol";
 }
 
 interface SymbolConstructor {
@@ -565,7 +565,7 @@ interface IterableIterator<T> extends Iterator<T> {
 }
 
 interface GeneratorFunction extends Function {
-
+    [Symbol.toStringTag]: "GeneratorFunction";
 }
 
 interface GeneratorFunctionConstructor {
@@ -690,7 +690,7 @@ interface Math {
       */
     cbrt(x: number): number;
 
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "Math";
 }
 
 interface Date {
@@ -807,7 +807,7 @@ interface Map<K, V> {
     size: number;
     values(): IterableIterator<V>;
     [Symbol.iterator]():IterableIterator<[K,V]>;
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "Map";
 }
 
 interface MapConstructor {
@@ -824,7 +824,7 @@ interface WeakMap<K, V> {
     get(key: K): V;
     has(key: K): boolean;
     set(key: K, value?: V): WeakMap<K, V>;
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "WeakMap";
 }
 
 interface WeakMapConstructor {
@@ -846,7 +846,7 @@ interface Set<T> {
     size: number;
     values(): IterableIterator<T>;
     [Symbol.iterator]():IterableIterator<T>;
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "Set";
 }
 
 interface SetConstructor {
@@ -862,7 +862,7 @@ interface WeakSet<T> {
     clear(): void;
     delete(value: T): boolean;
     has(value: T): boolean;
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "WeakSet";
 }
 
 interface WeakSetConstructor {
@@ -874,7 +874,7 @@ interface WeakSetConstructor {
 declare var WeakSet: WeakSetConstructor;
 
 interface JSON {
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "JSON";
 }
 
 /**
@@ -884,11 +884,11 @@ interface JSON {
   * buffer as needed. 
   */
 interface ArrayBuffer {
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "ArrayBuffer";
 }
 
 interface DataView {
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "DataView";
 }
 
 /**
@@ -909,6 +909,7 @@ interface Int8Array {
       */
     values(): IterableIterator<number>;
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Int8Array";
 }
 
 interface Int8ArrayConstructor {
@@ -941,6 +942,7 @@ interface Uint8Array {
       */
     values(): IterableIterator<number>;
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "UInt8Array";
 }
 
 interface Uint8ArrayConstructor {
@@ -976,6 +978,7 @@ interface Uint8ClampedArray {
     values(): IterableIterator<number>;
 
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Uint8ClampedArray";
 }
 
 interface Uint8ClampedArrayConstructor {
@@ -1013,6 +1016,7 @@ interface Int16Array {
 
 
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Int16Array";
 }
 
 interface Int16ArrayConstructor {
@@ -1045,6 +1049,7 @@ interface Uint16Array {
       */
     values(): IterableIterator<number>;
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Uint16Array";
 }
 
 interface Uint16ArrayConstructor {
@@ -1077,6 +1082,7 @@ interface Int32Array {
       */
     values(): IterableIterator<number>;
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Int32Array";
 }
 
 interface Int32ArrayConstructor {
@@ -1109,6 +1115,7 @@ interface Uint32Array {
       */
     values(): IterableIterator<number>;
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Uint32Array";
 }
 
 interface Uint32ArrayConstructor {
@@ -1141,6 +1148,7 @@ interface Float32Array {
       */
     values(): IterableIterator<number>;
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Float32Array";
 }
 
 interface Float32ArrayConstructor {
@@ -1173,6 +1181,7 @@ interface Float64Array {
       */
     values(): IterableIterator<number>;
     [Symbol.iterator](): IterableIterator<number>;
+    [Symbol.toStringTag]: "Float64Array";
 }
 
 interface Float64ArrayConstructor {
@@ -1249,7 +1258,7 @@ interface Promise<T> {
     catch(onrejected?: (reason: any) => T | PromiseLike<T>): Promise<T>;
     catch(onrejected?: (reason: any) => void): Promise<T>;
 
-    [Symbol.toStringTag]: string;
+    [Symbol.toStringTag]: "Promise";
 }
 
 interface PromiseConstructor {
diff --git a/src/server/editorServices.ts b/src/server/editorServices.ts
index d78f7d40ef6..2c021106c74 100644
--- a/src/server/editorServices.ts
+++ b/src/server/editorServices.ts
@@ -100,7 +100,8 @@ namespace ts.server {
             this.filenameToScript = createFileMap<ScriptInfo>();
             this.moduleResolutionHost = {
                 fileExists: fileName => this.fileExists(fileName),
-                readFile: fileName => this.host.readFile(fileName)
+                readFile: fileName => this.host.readFile(fileName),
+                directoryExists: directoryName => this.host.directoryExists(directoryName)
             };
         }
 
diff --git a/src/services/services.ts b/src/services/services.ts
index c199c39d808..f9acb98ce5c 100644
--- a/src/services/services.ts
+++ b/src/services/services.ts
@@ -1034,6 +1034,7 @@ namespace ts {
          * host specific questions using 'getScriptSnapshot'.
          */
         resolveModuleNames?(moduleNames: string[], containingFile: string): ResolvedModule[];
+        directoryExists?(directoryName: string): boolean;
     }
 
     //
@@ -1911,7 +1912,8 @@ namespace ts {
             getCurrentDirectory: () => "",
             getNewLine: () => newLine,
             fileExists: (fileName): boolean => fileName === inputFileName,
-            readFile: (fileName): string => ""
+            readFile: (fileName): string => "",
+            directoryExists: directoryExists => true
         };
 
         const program = createProgram([inputFileName], options, compilerHost);
@@ -2768,6 +2770,10 @@ namespace ts {
                     // stub missing host functionality
                     const entry = hostCache.getOrCreateEntry(fileName);
                     return entry && entry.scriptSnapshot.getText(0, entry.scriptSnapshot.getLength());
+                },
+                directoryExists: directoryName => {
+                    Debug.assert(!host.resolveModuleNames);
+                    return directoryProbablyExists(directoryName, host);
                 }
             };
 
diff --git a/src/services/shims.ts b/src/services/shims.ts
index 6b656ea2738..397f86f871f 100644
--- a/src/services/shims.ts
+++ b/src/services/shims.ts
@@ -62,6 +62,7 @@ namespace ts {
         useCaseSensitiveFileNames?(): boolean;
         
         getModuleResolutionsForFile?(fileName: string): string;
+        directoryExists(directoryName: string): boolean;
     }
 
     /** Public interface of the the of a config service shim instance.*/
@@ -274,6 +275,7 @@ namespace ts {
         private tracingEnabled = false;
         
         public resolveModuleNames: (moduleName: string[], containingFile: string) => ResolvedModule[];
+        public directoryExists: (directoryName: string) => boolean;
         
         constructor(private shimHost: LanguageServiceShimHost) {
             // if shimHost is a COM object then property check will become method call with no arguments.
@@ -287,6 +289,9 @@ namespace ts {
                     });
                 };
             }
+            if ("directoryExists" in this.shimHost) {
+                this.directoryExists = directoryName => this.shimHost.directoryExists(directoryName);
+            }
         }
 
         public log(s: string): void {
@@ -405,9 +410,14 @@ namespace ts {
         }
     }
 
-    export class CoreServicesShimHostAdapter implements ParseConfigHost {
+    export class CoreServicesShimHostAdapter implements ParseConfigHost, ModuleResolutionHost {
 
+        public directoryExists: (directoryName: string) => boolean;
+        
         constructor(private shimHost: CoreServicesShimHost) {
+            if ("directoryExists" in this.shimHost) {
+                this.directoryExists = directoryName => this.shimHost.directoryExists(directoryName);
+            }
         }
 
         public readDirectory(rootDir: string, extension: string, exclude: string[]): string[] {
@@ -424,11 +434,11 @@ namespace ts {
             }
             return JSON.parse(encoded);
         }
-        
+
         public fileExists(fileName: string): boolean {
             return this.shimHost.fileExists(fileName);
         }
-        
+
         public readFile(fileName: string): string {
             return this.shimHost.readFile(fileName);
         }
diff --git a/tests/baselines/reference/aliasesInSystemModule1.js b/tests/baselines/reference/aliasesInSystemModule1.js
index 11f02c18ea4..43037c7634c 100644
--- a/tests/baselines/reference/aliasesInSystemModule1.js
+++ b/tests/baselines/reference/aliasesInSystemModule1.js
@@ -17,7 +17,7 @@ module M {
   
 
 //// [aliasesInSystemModule1.js]
-System.register(['foo'], function(exports_1, __moduleName) {
+System.register(['foo'], function(exports_1) {
     "use strict";
     var alias;
     var cls, cls2, x, y, z, M;
diff --git a/tests/baselines/reference/aliasesInSystemModule2.js b/tests/baselines/reference/aliasesInSystemModule2.js
index 7378536e2fd..7effb2721be 100644
--- a/tests/baselines/reference/aliasesInSystemModule2.js
+++ b/tests/baselines/reference/aliasesInSystemModule2.js
@@ -16,7 +16,7 @@ module M {
 }
 
 //// [aliasesInSystemModule2.js]
-System.register(["foo"], function(exports_1, __moduleName) {
+System.register(["foo"], function(exports_1) {
     "use strict";
     var foo_1;
     var cls, cls2, x, y, z, M;
diff --git a/tests/baselines/reference/allowSyntheticDefaultImports2.js b/tests/baselines/reference/allowSyntheticDefaultImports2.js
index 0480250d71a..fcc029415cf 100644
--- a/tests/baselines/reference/allowSyntheticDefaultImports2.js
+++ b/tests/baselines/reference/allowSyntheticDefaultImports2.js
@@ -10,7 +10,7 @@ export class Foo {
 }
 
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var Foo;
     return {
@@ -26,7 +26,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [a.js]
-System.register(["./b"], function(exports_1, __moduleName) {
+System.register(["./b"], function(exports_1) {
     "use strict";
     var b_1;
     var x;
diff --git a/tests/baselines/reference/allowSyntheticDefaultImports3.js b/tests/baselines/reference/allowSyntheticDefaultImports3.js
index adf85792fd9..b14d25dbd61 100644
--- a/tests/baselines/reference/allowSyntheticDefaultImports3.js
+++ b/tests/baselines/reference/allowSyntheticDefaultImports3.js
@@ -11,7 +11,7 @@ export class Foo {
 
 
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var Foo;
     return {
@@ -27,7 +27,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [a.js]
-System.register(["./b"], function(exports_1, __moduleName) {
+System.register(["./b"], function(exports_1) {
     "use strict";
     var b_1;
     var x;
diff --git a/tests/baselines/reference/allowSyntheticDefaultImports5.js b/tests/baselines/reference/allowSyntheticDefaultImports5.js
index d0dfdcb76d1..c9121512b61 100644
--- a/tests/baselines/reference/allowSyntheticDefaultImports5.js
+++ b/tests/baselines/reference/allowSyntheticDefaultImports5.js
@@ -12,7 +12,7 @@ export var x = new Foo();
 
 
 //// [a.js]
-System.register(["./b"], function(exports_1, __moduleName) {
+System.register(["./b"], function(exports_1) {
     "use strict";
     var b_1;
     var x;
diff --git a/tests/baselines/reference/allowSyntheticDefaultImports6.js b/tests/baselines/reference/allowSyntheticDefaultImports6.js
index eaafb5ee276..64d52e70af9 100644
--- a/tests/baselines/reference/allowSyntheticDefaultImports6.js
+++ b/tests/baselines/reference/allowSyntheticDefaultImports6.js
@@ -12,7 +12,7 @@ export var x = new Foo();
 
 
 //// [a.js]
-System.register(["./b"], function(exports_1, __moduleName) {
+System.register(["./b"], function(exports_1) {
     "use strict";
     var b_1;
     var x;
diff --git a/tests/baselines/reference/anonymousDefaultExportsSystem.js b/tests/baselines/reference/anonymousDefaultExportsSystem.js
index 4ee7e2a11bc..74913a57a99 100644
--- a/tests/baselines/reference/anonymousDefaultExportsSystem.js
+++ b/tests/baselines/reference/anonymousDefaultExportsSystem.js
@@ -7,7 +7,7 @@ export default class {}
 export default function() {}
 
 //// [a.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var default_1;
     return {
@@ -20,7 +20,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function default_1() { }
     exports_1("default", default_1);
diff --git a/tests/baselines/reference/capturedLetConstInLoop4.js b/tests/baselines/reference/capturedLetConstInLoop4.js
index c2d2c998616..724c84fe04f 100644
--- a/tests/baselines/reference/capturedLetConstInLoop4.js
+++ b/tests/baselines/reference/capturedLetConstInLoop4.js
@@ -144,7 +144,7 @@ for (const y = 0; y < 1;) {
 
 
 //// [capturedLetConstInLoop4.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var v0, v00, v1, v2, v3, v4, v5, v6, v7, v8, v0_c, v00_c, v1_c, v2_c, v3_c, v4_c, v5_c, v6_c, v7_c, v8_c;
     //======let
diff --git a/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.js b/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.js
index be20d5ffc12..ed322374799 100644
--- a/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.js
+++ b/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.js
@@ -13,7 +13,7 @@ var decorator: ClassDecorator;
 export default class {}
 
 //// [a.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
         var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
@@ -35,7 +35,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
         var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
diff --git a/tests/baselines/reference/defaultExportsGetExportedSystem.js b/tests/baselines/reference/defaultExportsGetExportedSystem.js
index f67ccb6ee23..67dc47f4bd5 100644
--- a/tests/baselines/reference/defaultExportsGetExportedSystem.js
+++ b/tests/baselines/reference/defaultExportsGetExportedSystem.js
@@ -8,7 +8,7 @@ export default function foo() {}
 
 
 //// [a.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var Foo;
     return {
@@ -21,7 +21,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function foo() { }
     exports_1("default", foo);
diff --git a/tests/baselines/reference/es5-system.js b/tests/baselines/reference/es5-system.js
index 1cd1dac13d1..a9633352b8b 100644
--- a/tests/baselines/reference/es5-system.js
+++ b/tests/baselines/reference/es5-system.js
@@ -15,7 +15,7 @@ export default class A
 
 
 //// [es5-system.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var A;
     return {
diff --git a/tests/baselines/reference/exportNonInitializedVariablesSystem.js b/tests/baselines/reference/exportNonInitializedVariablesSystem.js
index 53d8a5424ef..b5674bf5ce3 100644
--- a/tests/baselines/reference/exportNonInitializedVariablesSystem.js
+++ b/tests/baselines/reference/exportNonInitializedVariablesSystem.js
@@ -35,7 +35,7 @@ export let h1: D = new D;
 
 
 //// [exportNonInitializedVariablesSystem.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var a, b, c, d, A, e, f, B, C, a1, b1, c1, d1, D, e1, f1, g1, h1;
     return {
diff --git a/tests/baselines/reference/exportStarForValues10.js b/tests/baselines/reference/exportStarForValues10.js
index 1149baf8b27..dca5dad9b7a 100644
--- a/tests/baselines/reference/exportStarForValues10.js
+++ b/tests/baselines/reference/exportStarForValues10.js
@@ -13,7 +13,7 @@ export * from "file1";
 var x = 1;
 
 //// [file0.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var v;
     return {
@@ -24,7 +24,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
@@ -33,7 +33,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register(["file0"], function(exports_1, __moduleName) {
+System.register(["file0"], function(exports_1) {
     "use strict";
     var x;
     function exportStar_1(m) {
diff --git a/tests/baselines/reference/exportStarForValues6.js b/tests/baselines/reference/exportStarForValues6.js
index f2257277630..69357d87ee0 100644
--- a/tests/baselines/reference/exportStarForValues6.js
+++ b/tests/baselines/reference/exportStarForValues6.js
@@ -9,7 +9,7 @@ export * from "file1"
 export var x = 1;
 
 //// [file1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
@@ -18,7 +18,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x;
     return {
diff --git a/tests/baselines/reference/exportStarForValuesInSystem.js b/tests/baselines/reference/exportStarForValuesInSystem.js
index 33ca1f8b24d..a33465f7e2e 100644
--- a/tests/baselines/reference/exportStarForValuesInSystem.js
+++ b/tests/baselines/reference/exportStarForValuesInSystem.js
@@ -9,7 +9,7 @@ export * from "file1"
 var x = 1;
 
 //// [file1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
@@ -18,7 +18,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x;
     return {
diff --git a/tests/baselines/reference/isolatedModulesPlainFile-System.js b/tests/baselines/reference/isolatedModulesPlainFile-System.js
index 44eec5161c0..b66bd497810 100644
--- a/tests/baselines/reference/isolatedModulesPlainFile-System.js
+++ b/tests/baselines/reference/isolatedModulesPlainFile-System.js
@@ -5,7 +5,7 @@ run(1);
 
 
 //// [isolatedModulesPlainFile-System.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
diff --git a/tests/baselines/reference/jsxAndTypeAssertion.errors.txt b/tests/baselines/reference/jsxAndTypeAssertion.errors.txt
index aebabf15133..d0e9bcf145b 100644
--- a/tests/baselines/reference/jsxAndTypeAssertion.errors.txt
+++ b/tests/baselines/reference/jsxAndTypeAssertion.errors.txt
@@ -1,14 +1,20 @@
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(7,6): error TS17008: JSX element 'any' has no corresponding closing tag.
 tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(7,13): error TS2304: Cannot find name 'test'.
 tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(7,17): error TS1005: '}' expected.
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(9,6): error TS17008: JSX element 'any' has no corresponding closing tag.
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(11,6): error TS17008: JSX element 'foo' has no corresponding closing tag.
 tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(11,32): error TS1005: '}' expected.
 tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(13,36): error TS1005: '}' expected.
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(15,17): error TS17008: JSX element 'foo' has no corresponding closing tag.
 tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(15,45): error TS1005: '}' expected.
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(19,2): error TS17008: JSX element 'foo' has no corresponding closing tag.
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(19,8): error TS17008: JSX element 'foo' has no corresponding closing tag.
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(19,13): error TS17008: JSX element 'foo' has no corresponding closing tag.
 tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(22,1): error TS1005: ':' expected.
-tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(22,1): error TS17002: Expected corresponding JSX closing tag for 'any'.
-tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(22,1): error TS17002: Expected corresponding JSX closing tag for 'foo'.
+tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(22,1): error TS1005: '</' expected.
 
 
-==== tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx (8 errors) ====
+==== tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx (14 errors) ====
     
     declare var createElement: any;
     
@@ -16,14 +22,20 @@ tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(22,1): error TS17002: Expect
     
     var x: any;
     x = <any> { test: <any></any> };
+         ~~~
+!!! error TS17008: JSX element 'any' has no corresponding closing tag.
                 ~~~~
 !!! error TS2304: Cannot find name 'test'.
                     ~
 !!! error TS1005: '}' expected.
     
     x = <any><any></any>;
+         ~~~
+!!! error TS17008: JSX element 'any' has no corresponding closing tag.
      
     x = <foo>hello {<foo>{}} </foo>;
+         ~~~
+!!! error TS17008: JSX element 'foo' has no corresponding closing tag.
                                    ~
 !!! error TS1005: '}' expected.
     
@@ -32,18 +44,24 @@ tests/cases/conformance/jsx/jsxAndTypeAssertion.tsx(22,1): error TS17002: Expect
 !!! error TS1005: '}' expected.
     
     x = <foo test={<foo>{}}>hello{<foo>{}}</foo>;
+                    ~~~
+!!! error TS17008: JSX element 'foo' has no corresponding closing tag.
                                                 ~
 !!! error TS1005: '}' expected.
     
     x = <foo>x</foo>, x = <foo/>;
     
     <foo>{<foo><foo>{/foo/.test(x) ? <foo><foo></foo> : <foo><foo></foo>}</foo>}</foo>
+     ~~~
+!!! error TS17008: JSX element 'foo' has no corresponding closing tag.
+           ~~~
+!!! error TS17008: JSX element 'foo' has no corresponding closing tag.
+                ~~~
+!!! error TS17008: JSX element 'foo' has no corresponding closing tag.
     
         
     
     
 !!! error TS1005: ':' expected.
     
-!!! error TS17002: Expected corresponding JSX closing tag for 'any'.
-    
-!!! error TS17002: Expected corresponding JSX closing tag for 'foo'.
\ No newline at end of file
+!!! error TS1005: '</' expected.
\ No newline at end of file
diff --git a/tests/baselines/reference/jsxInvalidEsprimaTestSuite.errors.txt b/tests/baselines/reference/jsxInvalidEsprimaTestSuite.errors.txt
index 578159dc651..237c3399e88 100644
--- a/tests/baselines/reference/jsxInvalidEsprimaTestSuite.errors.txt
+++ b/tests/baselines/reference/jsxInvalidEsprimaTestSuite.errors.txt
@@ -50,6 +50,8 @@ tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(17,3): error TS1003:
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(17,11): error TS1109: Expression expected.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(17,13): error TS2304: Cannot find name 'a'.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(17,22): error TS1109: Expression expected.
+tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(18,2): error TS17008: JSX element 'a' has no corresponding closing tag.
+tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(19,2): error TS17008: JSX element 'a' has no corresponding closing tag.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(22,10): error TS1005: '}' expected.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(23,20): error TS1003: Identifier expected.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(24,15): error TS1003: Identifier expected.
@@ -58,14 +60,16 @@ tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(25,7): error TS2304:
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(27,17): error TS1005: '>' expected.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(28,10): error TS2304: Cannot find name 'props'.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(28,28): error TS1005: '>' expected.
+tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(32,2): error TS17008: JSX element 'a' has no corresponding closing tag.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(32,6): error TS1005: '{' expected.
+tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(33,2): error TS17008: JSX element 'a' has no corresponding closing tag.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(33,6): error TS1005: '{' expected.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(33,7): error TS1109: Expression expected.
 tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(35,4): error TS1003: Identifier expected.
-tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(35,21): error TS17002: Expected corresponding JSX closing tag for 'a'.
+tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(35,21): error TS1005: '</' expected.
 
 
-==== tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx (65 errors) ====
+==== tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx (69 errors) ====
     declare var React: any;
     
     </>;
@@ -188,7 +192,11 @@ tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(35,21): error TS17002
                          ~
 !!! error TS1109: Expression expected.
     <a><a />;
+     ~
+!!! error TS17008: JSX element 'a' has no corresponding closing tag.
     <a b={}>;
+     ~
+!!! error TS17008: JSX element 'a' has no corresponding closing tag.
     var x = <div>one</div><div>two</div>;;
     var x = <div>one</div> /* intervening comment */ <div>two</div>;;
     <a>{"str";}</a>;
@@ -218,9 +226,13 @@ tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(35,21): error TS17002
     <a>></a>;
     <a> ></a>;
     <a b=}>;
+     ~
+!!! error TS17008: JSX element 'a' has no corresponding closing tag.
          ~
 !!! error TS1005: '{' expected.
     <a b=<}>;
+     ~
+!!! error TS17008: JSX element 'a' has no corresponding closing tag.
          ~
 !!! error TS1005: '{' expected.
           ~
@@ -230,4 +242,4 @@ tests/cases/conformance/jsx/jsxInvalidEsprimaTestSuite.tsx(35,21): error TS17002
        ~~~
 !!! error TS1003: Identifier expected.
                         
-!!! error TS17002: Expected corresponding JSX closing tag for 'a'.
\ No newline at end of file
+!!! error TS1005: '</' expected.
\ No newline at end of file
diff --git a/tests/baselines/reference/jsxParsingError2.errors.txt b/tests/baselines/reference/jsxParsingError2.errors.txt
new file mode 100644
index 00000000000..9d9922228f9
--- /dev/null
+++ b/tests/baselines/reference/jsxParsingError2.errors.txt
@@ -0,0 +1,66 @@
+tests/cases/conformance/jsx/Error1.tsx(2,11): error TS17008: JSX element 'div' has no corresponding closing tag.
+tests/cases/conformance/jsx/Error1.tsx(2,21): error TS17002: Expected corresponding JSX closing tag for 'span'.
+tests/cases/conformance/jsx/Error1.tsx(3,1): error TS1005: '</' expected.
+tests/cases/conformance/jsx/Error2.tsx(1,15): error TS17002: Expected corresponding JSX closing tag for 'div'.
+tests/cases/conformance/jsx/Error3.tsx(1,11): error TS17008: JSX element 'div' has no corresponding closing tag.
+tests/cases/conformance/jsx/Error3.tsx(3,1): error TS1005: '</' expected.
+tests/cases/conformance/jsx/Error4.tsx(1,11): error TS17008: JSX element 'div' has no corresponding closing tag.
+tests/cases/conformance/jsx/Error4.tsx(1,20): error TS17002: Expected corresponding JSX closing tag for 'div'.
+tests/cases/conformance/jsx/Error4.tsx(2,1): error TS1005: '</' expected.
+tests/cases/conformance/jsx/Error5.tsx(1,11): error TS17008: JSX element 'div' has no corresponding closing tag.
+tests/cases/conformance/jsx/Error5.tsx(1,16): error TS17008: JSX element 'span' has no corresponding closing tag.
+tests/cases/conformance/jsx/Error5.tsx(3,1): error TS1005: '</' expected.
+
+
+==== tests/cases/conformance/jsx/file.tsx (0 errors) ====
+    
+    declare module JSX {
+    	interface Element { }
+    	interface IntrinsicElements {
+    		[s: string]: any;
+    	}
+    }
+    
+==== tests/cases/conformance/jsx/Error1.tsx (3 errors) ====
+    // Issue error about missing span closing tag, not missing div closing tag
+    let x1 = <div><span></div>;
+              ~~~
+!!! error TS17008: JSX element 'div' has no corresponding closing tag.
+                        ~~~~~~
+!!! error TS17002: Expected corresponding JSX closing tag for 'span'.
+    
+    
+!!! error TS1005: '</' expected.
+==== tests/cases/conformance/jsx/Error2.tsx (1 errors) ====
+    let x2 = <div></span>;
+                  ~~~~~~~
+!!! error TS17002: Expected corresponding JSX closing tag for 'div'.
+    
+    
+==== tests/cases/conformance/jsx/Error3.tsx (2 errors) ====
+    let x3 = <div>;
+              ~~~
+!!! error TS17008: JSX element 'div' has no corresponding closing tag.
+    
+    
+    
+!!! error TS1005: '</' expected.
+==== tests/cases/conformance/jsx/Error4.tsx (3 errors) ====
+    let x4 = <div><div></span>;
+              ~~~
+!!! error TS17008: JSX element 'div' has no corresponding closing tag.
+                       ~~~~~~~
+!!! error TS17002: Expected corresponding JSX closing tag for 'div'.
+    
+    
+!!! error TS1005: '</' expected.
+==== tests/cases/conformance/jsx/Error5.tsx (3 errors) ====
+    let x5 = <div><span>
+              ~~~
+!!! error TS17008: JSX element 'div' has no corresponding closing tag.
+                   ~~~~
+!!! error TS17008: JSX element 'span' has no corresponding closing tag.
+    
+    
+    
+!!! error TS1005: '</' expected.
\ No newline at end of file
diff --git a/tests/baselines/reference/jsxParsingError2.js b/tests/baselines/reference/jsxParsingError2.js
new file mode 100644
index 00000000000..02b08480d1c
--- /dev/null
+++ b/tests/baselines/reference/jsxParsingError2.js
@@ -0,0 +1,49 @@
+//// [tests/cases/conformance/jsx/jsxParsingError2.tsx] ////
+
+//// [file.tsx]
+
+declare module JSX {
+	interface Element { }
+	interface IntrinsicElements {
+		[s: string]: any;
+	}
+}
+
+//// [Error1.tsx]
+// Issue error about missing span closing tag, not missing div closing tag
+let x1 = <div><span></div>;
+
+//// [Error2.tsx]
+let x2 = <div></span>;
+
+
+//// [Error3.tsx]
+let x3 = <div>;
+
+
+//// [Error4.tsx]
+let x4 = <div><div></span>;
+
+//// [Error5.tsx]
+let x5 = <div><span>
+
+
+
+//// [file.jsx]
+//// [Error1.jsx]
+// Issue error about missing span closing tag, not missing div closing tag
+var x1 = <div><span></div>;
+</>;
+//// [Error2.jsx]
+var x2 = <div></span>;
+//// [Error3.jsx]
+var x3 = <div>;
+
+</>;
+//// [Error4.jsx]
+var x4 = <div><div></span>;
+</>;
+//// [Error5.jsx]
+var x5 = <div><span>
+
+</></>;
diff --git a/tests/baselines/reference/modulePrologueSystem.js b/tests/baselines/reference/modulePrologueSystem.js
index 04519898166..80a46fb27fc 100644
--- a/tests/baselines/reference/modulePrologueSystem.js
+++ b/tests/baselines/reference/modulePrologueSystem.js
@@ -4,7 +4,7 @@
 export class Foo {}
 
 //// [modulePrologueSystem.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var Foo;
     return {
diff --git a/tests/baselines/reference/outFilerootDirModuleNamesSystem.js b/tests/baselines/reference/outFilerootDirModuleNamesSystem.js
index e6ac346dc7f..298ad52689f 100644
--- a/tests/baselines/reference/outFilerootDirModuleNamesSystem.js
+++ b/tests/baselines/reference/outFilerootDirModuleNamesSystem.js
@@ -11,7 +11,7 @@ export default function foo() { new Foo(); }
 
 
 //// [output.js]
-System.register("b", ["a"], function(exports_1, __moduleName) {
+System.register("b", ["a"], function(exports_1) {
     "use strict";
     var a_1;
     function foo() { new a_1.default(); }
@@ -25,7 +25,7 @@ System.register("b", ["a"], function(exports_1, __moduleName) {
         }
     }
 });
-System.register("a", ["b"], function(exports_2, __moduleName) {
+System.register("a", ["b"], function(exports_2) {
     "use strict";
     var b_1;
     var Foo;
diff --git a/tests/baselines/reference/outModuleConcatSystem.js b/tests/baselines/reference/outModuleConcatSystem.js
index bd2753c6d5f..d4552d33167 100644
--- a/tests/baselines/reference/outModuleConcatSystem.js
+++ b/tests/baselines/reference/outModuleConcatSystem.js
@@ -14,7 +14,7 @@ var __extends = (this && this.__extends) || function (d, b) {
     function __() { this.constructor = d; }
     d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
 };
-System.register("ref/a", [], function(exports_1, __moduleName) {
+System.register("ref/a", [], function(exports_1) {
     "use strict";
     var A;
     return {
@@ -29,7 +29,7 @@ System.register("ref/a", [], function(exports_1, __moduleName) {
         }
     }
 });
-System.register("b", ["ref/a"], function(exports_2, __moduleName) {
+System.register("b", ["ref/a"], function(exports_2) {
     "use strict";
     var a_1;
     var B;
diff --git a/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt b/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt
index 0b1f9cc5294..e3f521c828c 100644
--- a/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt
+++ b/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt
@@ -13,7 +13,7 @@ sourceFile:tests/cases/compiler/ref/a.ts
 >>>    function __() { this.constructor = d; }
 >>>    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
 >>>};
->>>System.register("ref/a", [], function(exports_1, __moduleName) {
+>>>System.register("ref/a", [], function(exports_1) {
 >>>    "use strict";
 >>>    var A;
 >>>    return {
@@ -82,7 +82,7 @@ sourceFile:tests/cases/compiler/b.ts
 >>>        }
 >>>    }
 >>>});
->>>System.register("b", ["ref/a"], function(exports_2, __moduleName) {
+>>>System.register("b", ["ref/a"], function(exports_2) {
 >>>    "use strict";
 >>>    var a_1;
 >>>    var B;
diff --git a/tests/baselines/reference/prefixUnaryOperatorsOnExportedVariables.js b/tests/baselines/reference/prefixUnaryOperatorsOnExportedVariables.js
index a3b70bde6d5..5d414c97d05 100644
--- a/tests/baselines/reference/prefixUnaryOperatorsOnExportedVariables.js
+++ b/tests/baselines/reference/prefixUnaryOperatorsOnExportedVariables.js
@@ -31,7 +31,7 @@ if (++y) {
 }
 
 //// [prefixUnaryOperatorsOnExportedVariables.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x, y;
     return {
diff --git a/tests/baselines/reference/systemExportAssignment.js b/tests/baselines/reference/systemExportAssignment.js
index f8b50cb580f..72962cf835c 100644
--- a/tests/baselines/reference/systemExportAssignment.js
+++ b/tests/baselines/reference/systemExportAssignment.js
@@ -10,7 +10,7 @@ import * as a from "a";
 
 
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
diff --git a/tests/baselines/reference/systemExportAssignment2.js b/tests/baselines/reference/systemExportAssignment2.js
index 6a5c0e8f397..0f4dd712493 100644
--- a/tests/baselines/reference/systemExportAssignment2.js
+++ b/tests/baselines/reference/systemExportAssignment2.js
@@ -10,7 +10,7 @@ import * as a from "a";
 
 
 //// [a.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var a;
     return {
@@ -21,7 +21,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
diff --git a/tests/baselines/reference/systemExportAssignment3.js b/tests/baselines/reference/systemExportAssignment3.js
index 9c6d3cdbb2f..ca2492a54e1 100644
--- a/tests/baselines/reference/systemExportAssignment3.js
+++ b/tests/baselines/reference/systemExportAssignment3.js
@@ -12,7 +12,7 @@ import * as a from "a";
 
 
 //// [b.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
diff --git a/tests/baselines/reference/systemModule1.js b/tests/baselines/reference/systemModule1.js
index 749d8170dcb..52f3b482069 100644
--- a/tests/baselines/reference/systemModule1.js
+++ b/tests/baselines/reference/systemModule1.js
@@ -3,7 +3,7 @@
 export var x = 1;
 
 //// [systemModule1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x;
     return {
diff --git a/tests/baselines/reference/systemModule10.js b/tests/baselines/reference/systemModule10.js
index f23e7ca1d76..ac32c4948e7 100644
--- a/tests/baselines/reference/systemModule10.js
+++ b/tests/baselines/reference/systemModule10.js
@@ -10,7 +10,7 @@ export {n2}
 export {n2 as n3}
 
 //// [systemModule10.js]
-System.register(['file1', 'file2'], function(exports_1, __moduleName) {
+System.register(['file1', 'file2'], function(exports_1) {
     "use strict";
     var file1_1, n2;
     return {
diff --git a/tests/baselines/reference/systemModule10_ES5.js b/tests/baselines/reference/systemModule10_ES5.js
index 3d63e092df4..0c98df6ba99 100644
--- a/tests/baselines/reference/systemModule10_ES5.js
+++ b/tests/baselines/reference/systemModule10_ES5.js
@@ -10,7 +10,7 @@ export {n2}
 export {n2 as n3}
 
 //// [systemModule10_ES5.js]
-System.register(['file1', 'file2'], function(exports_1, __moduleName) {
+System.register(['file1', 'file2'], function(exports_1) {
     "use strict";
     var file1_1, n2;
     return {
diff --git a/tests/baselines/reference/systemModule11.js b/tests/baselines/reference/systemModule11.js
index 1e755a86541..92b0576b919 100644
--- a/tests/baselines/reference/systemModule11.js
+++ b/tests/baselines/reference/systemModule11.js
@@ -42,7 +42,7 @@ export * from 'a';
 
 //// [file1.js]
 // set of tests cases that checks generation of local storage for exported names
-System.register(['bar'], function(exports_1, __moduleName) {
+System.register(['bar'], function(exports_1) {
     "use strict";
     var x;
     function foo() { }
@@ -68,7 +68,7 @@ System.register(['bar'], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register(['bar'], function(exports_1, __moduleName) {
+System.register(['bar'], function(exports_1) {
     "use strict";
     var x, y;
     var exportedNames_1 = {
@@ -94,7 +94,7 @@ System.register(['bar'], function(exports_1, __moduleName) {
     }
 });
 //// [file3.js]
-System.register(['a', 'bar'], function(exports_1, __moduleName) {
+System.register(['a', 'bar'], function(exports_1) {
     "use strict";
     function foo() { }
     exports_1("default", foo);
@@ -125,7 +125,7 @@ System.register(['a', 'bar'], function(exports_1, __moduleName) {
     }
 });
 //// [file4.js]
-System.register(['a'], function(exports_1, __moduleName) {
+System.register(['a'], function(exports_1) {
     "use strict";
     var x, z, z1;
     function foo() { }
@@ -147,7 +147,7 @@ System.register(['a'], function(exports_1, __moduleName) {
     }
 });
 //// [file5.js]
-System.register(['a'], function(exports_1, __moduleName) {
+System.register(['a'], function(exports_1) {
     "use strict";
     function foo() { }
     function exportStar_1(m) {
diff --git a/tests/baselines/reference/systemModule12.js b/tests/baselines/reference/systemModule12.js
index 04252396926..d8961c3b001 100644
--- a/tests/baselines/reference/systemModule12.js
+++ b/tests/baselines/reference/systemModule12.js
@@ -5,7 +5,7 @@ import n from 'file1'
 
 
 //// [systemModule12.js]
-System.register("NamedModule", [], function(exports_1, __moduleName) {
+System.register("NamedModule", [], function(exports_1) {
     "use strict";
     return {
         setters:[],
diff --git a/tests/baselines/reference/systemModule13.js b/tests/baselines/reference/systemModule13.js
index 509534ee0fe..0b81a946de4 100644
--- a/tests/baselines/reference/systemModule13.js
+++ b/tests/baselines/reference/systemModule13.js
@@ -5,7 +5,7 @@ export const {a: z0, b: {c: z1}} = {a: true, b: {c: "123"}};
 for ([x] of [[1]]) {}
 
 //// [systemModule13.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x, y, z, z0, z1;
     return {
diff --git a/tests/baselines/reference/systemModule14.js b/tests/baselines/reference/systemModule14.js
index af78af7f6b1..2ec8fc600f4 100644
--- a/tests/baselines/reference/systemModule14.js
+++ b/tests/baselines/reference/systemModule14.js
@@ -11,7 +11,7 @@ var x = 1;
 export {foo as b}
 
 //// [systemModule14.js]
-System.register(["foo"], function(exports_1, __moduleName) {
+System.register(["foo"], function(exports_1) {
     "use strict";
     var foo_1;
     var x;
diff --git a/tests/baselines/reference/systemModule15.js b/tests/baselines/reference/systemModule15.js
index f347ad59671..f8dc11b0ac7 100644
--- a/tests/baselines/reference/systemModule15.js
+++ b/tests/baselines/reference/systemModule15.js
@@ -34,7 +34,7 @@ export default value;
 export var value2 = "v";
 
 //// [file3.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var value;
     return {
@@ -46,7 +46,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file4.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var value2;
     return {
@@ -57,7 +57,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register(["./file3"], function(exports_1, __moduleName) {
+System.register(["./file3"], function(exports_1) {
     "use strict";
     var moduleCStar, file3_1, file3_2;
     return {
@@ -75,7 +75,7 @@ System.register(["./file3"], function(exports_1, __moduleName) {
     }
 });
 //// [file1.js]
-System.register(["./file2"], function(exports_1, __moduleName) {
+System.register(["./file2"], function(exports_1) {
     "use strict";
     var moduleB;
     return {
diff --git a/tests/baselines/reference/systemModule16.js b/tests/baselines/reference/systemModule16.js
index 0986218b65d..76fb85cd3ae 100644
--- a/tests/baselines/reference/systemModule16.js
+++ b/tests/baselines/reference/systemModule16.js
@@ -13,7 +13,7 @@ x,y,a1,b1,d1;
 
 
 //// [systemModule16.js]
-System.register(["foo", "bar"], function(exports_1, __moduleName) {
+System.register(["foo", "bar"], function(exports_1) {
     "use strict";
     var x, y, foo_1;
     var exportedNames_1 = {
diff --git a/tests/baselines/reference/systemModule17.js b/tests/baselines/reference/systemModule17.js
index b441004408b..6daa119d287 100644
--- a/tests/baselines/reference/systemModule17.js
+++ b/tests/baselines/reference/systemModule17.js
@@ -42,7 +42,7 @@ export {II};
 export {II as II1};
 
 //// [f1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var A;
     return {
@@ -58,7 +58,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [f2.js]
-System.register(["f1"], function(exports_1, __moduleName) {
+System.register(["f1"], function(exports_1) {
     "use strict";
     var f1_1;
     var x, N, IX;
diff --git a/tests/baselines/reference/systemModule2.js b/tests/baselines/reference/systemModule2.js
index 78be2c008e4..ee3dfd327ec 100644
--- a/tests/baselines/reference/systemModule2.js
+++ b/tests/baselines/reference/systemModule2.js
@@ -4,7 +4,7 @@ var x = 1;
 export = x;
 
 //// [systemModule2.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x;
     return {
diff --git a/tests/baselines/reference/systemModule3.js b/tests/baselines/reference/systemModule3.js
index 9ccc5ea7894..dbef74f3036 100644
--- a/tests/baselines/reference/systemModule3.js
+++ b/tests/baselines/reference/systemModule3.js
@@ -18,7 +18,7 @@ export default class C {}
 export default class {}
 
 //// [file1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function default_1() { }
     exports_1("default", default_1);
@@ -29,7 +29,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function f() { }
     exports_1("default", f);
@@ -40,7 +40,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file3.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var C;
     return {
@@ -56,7 +56,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file4.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var default_1;
     return {
diff --git a/tests/baselines/reference/systemModule4.js b/tests/baselines/reference/systemModule4.js
index 526ee5d2c3a..192c87d49ea 100644
--- a/tests/baselines/reference/systemModule4.js
+++ b/tests/baselines/reference/systemModule4.js
@@ -4,7 +4,7 @@ export var x = 1;
 export var y;
 
 //// [systemModule4.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x, y;
     return {
diff --git a/tests/baselines/reference/systemModule5.js b/tests/baselines/reference/systemModule5.js
index 6d6a8e52823..4a455f25b13 100644
--- a/tests/baselines/reference/systemModule5.js
+++ b/tests/baselines/reference/systemModule5.js
@@ -4,7 +4,7 @@ export function foo() {}
 
 
 //// [systemModule5.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function foo() { }
     exports_1("foo", foo);
diff --git a/tests/baselines/reference/systemModule6.js b/tests/baselines/reference/systemModule6.js
index d93b1b861e0..51c8fbc68fb 100644
--- a/tests/baselines/reference/systemModule6.js
+++ b/tests/baselines/reference/systemModule6.js
@@ -7,7 +7,7 @@ function foo() {
 
 
 //// [systemModule6.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var C;
     function foo() {
diff --git a/tests/baselines/reference/systemModule7.js b/tests/baselines/reference/systemModule7.js
index 6abf76cf075..d76d86a3b0f 100644
--- a/tests/baselines/reference/systemModule7.js
+++ b/tests/baselines/reference/systemModule7.js
@@ -11,7 +11,7 @@ export module M {
 }
 
 //// [systemModule7.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var M;
     return {
diff --git a/tests/baselines/reference/systemModule8.js b/tests/baselines/reference/systemModule8.js
index 6d48a4a9d45..b6cdd677f00 100644
--- a/tests/baselines/reference/systemModule8.js
+++ b/tests/baselines/reference/systemModule8.js
@@ -31,7 +31,7 @@ export const {a: z0, b: {c: z1}} = {a: true, b: {c: "123"}};
 for ([x] of [[1]]) {}
 
 //// [systemModule8.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var x, y, z0, z1;
     function foo() {
diff --git a/tests/baselines/reference/systemModule9.js b/tests/baselines/reference/systemModule9.js
index 4804a08fd39..137dd019a02 100644
--- a/tests/baselines/reference/systemModule9.js
+++ b/tests/baselines/reference/systemModule9.js
@@ -22,7 +22,7 @@ export {x};
 export {y as z};
 
 //// [systemModule9.js]
-System.register(['file1', 'file2', 'file3', 'file4', 'file5', 'file6', 'file7'], function(exports_1, __moduleName) {
+System.register(['file1', 'file2', 'file3', 'file4', 'file5', 'file6', 'file7'], function(exports_1) {
     "use strict";
     var ns, file2_1, file3_1, file5_1, ns3;
     var x, y;
diff --git a/tests/baselines/reference/systemModuleAmbientDeclarations.js b/tests/baselines/reference/systemModuleAmbientDeclarations.js
index 35e48fe2aff..9bdde23a842 100644
--- a/tests/baselines/reference/systemModuleAmbientDeclarations.js
+++ b/tests/baselines/reference/systemModuleAmbientDeclarations.js
@@ -29,7 +29,7 @@ export declare module M { var v: number; }
 
 
 //// [file1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var promise, foo, c, e;
     return {
@@ -44,7 +44,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
@@ -53,7 +53,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file3.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
@@ -62,7 +62,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file4.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
@@ -71,7 +71,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file5.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
@@ -80,7 +80,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file6.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     return {
         setters:[],
diff --git a/tests/baselines/reference/systemModuleConstEnums.js b/tests/baselines/reference/systemModuleConstEnums.js
index abcd9ca5802..8b8707768d9 100644
--- a/tests/baselines/reference/systemModuleConstEnums.js
+++ b/tests/baselines/reference/systemModuleConstEnums.js
@@ -13,7 +13,7 @@ module M {
 }
 
 //// [systemModuleConstEnums.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function foo() {
         use(0 /* X */);
diff --git a/tests/baselines/reference/systemModuleConstEnumsSeparateCompilation.js b/tests/baselines/reference/systemModuleConstEnumsSeparateCompilation.js
index 5eaa354bc2a..8466d399ac9 100644
--- a/tests/baselines/reference/systemModuleConstEnumsSeparateCompilation.js
+++ b/tests/baselines/reference/systemModuleConstEnumsSeparateCompilation.js
@@ -13,7 +13,7 @@ module M {
 }
 
 //// [systemModuleConstEnumsSeparateCompilation.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var TopLevelConstEnum, M;
     function foo() {
diff --git a/tests/baselines/reference/systemModuleDeclarationMerging.js b/tests/baselines/reference/systemModuleDeclarationMerging.js
index 68dec6f3805..5ed029a769a 100644
--- a/tests/baselines/reference/systemModuleDeclarationMerging.js
+++ b/tests/baselines/reference/systemModuleDeclarationMerging.js
@@ -10,7 +10,7 @@ export enum E {}
 export module E { var x; }
 
 //// [systemModuleDeclarationMerging.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var F, C, E;
     function F() { }
diff --git a/tests/baselines/reference/systemModuleExportDefault.js b/tests/baselines/reference/systemModuleExportDefault.js
index 05e23840a51..cf1a99a4ad7 100644
--- a/tests/baselines/reference/systemModuleExportDefault.js
+++ b/tests/baselines/reference/systemModuleExportDefault.js
@@ -16,7 +16,7 @@ export default class C {}
 
 
 //// [file1.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function default_1() { }
     exports_1("default", default_1);
@@ -27,7 +27,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file2.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     function foo() { }
     exports_1("default", foo);
@@ -38,7 +38,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file3.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var default_1;
     return {
@@ -54,7 +54,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [file4.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var C;
     return {
diff --git a/tests/baselines/reference/systemModuleNonTopLevelModuleMembers.js b/tests/baselines/reference/systemModuleNonTopLevelModuleMembers.js
index 3bce3b662ae..ee9858a7fec 100644
--- a/tests/baselines/reference/systemModuleNonTopLevelModuleMembers.js
+++ b/tests/baselines/reference/systemModuleNonTopLevelModuleMembers.js
@@ -13,7 +13,7 @@ export module TopLevelModule2 {
 }
 
 //// [systemModuleNonTopLevelModuleMembers.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var TopLevelClass, TopLevelModule, TopLevelEnum, TopLevelModule2;
     function TopLevelFunction() { }
diff --git a/tests/baselines/reference/systemModuleWithSuperClass.js b/tests/baselines/reference/systemModuleWithSuperClass.js
index 21b262fd217..fe9c2742f2d 100644
--- a/tests/baselines/reference/systemModuleWithSuperClass.js
+++ b/tests/baselines/reference/systemModuleWithSuperClass.js
@@ -13,7 +13,7 @@ export class Bar extends Foo {
 }
 
 //// [foo.js]
-System.register([], function(exports_1, __moduleName) {
+System.register([], function(exports_1) {
     "use strict";
     var Foo;
     return {
@@ -29,7 +29,7 @@ System.register([], function(exports_1, __moduleName) {
     }
 });
 //// [bar.js]
-System.register(['./foo'], function(exports_1, __moduleName) {
+System.register(['./foo'], function(exports_1) {
     "use strict";
     var __extends = (this && this.__extends) || function (d, b) {
         for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
diff --git a/tests/baselines/reference/tsxErrorRecovery1.errors.txt b/tests/baselines/reference/tsxErrorRecovery1.errors.txt
index 0937b0d37ac..c368e48ddd1 100644
--- a/tests/baselines/reference/tsxErrorRecovery1.errors.txt
+++ b/tests/baselines/reference/tsxErrorRecovery1.errors.txt
@@ -1,15 +1,18 @@
+tests/cases/conformance/jsx/file.tsx(5,11): error TS17008: JSX element 'div' has no corresponding closing tag.
 tests/cases/conformance/jsx/file.tsx(5,19): error TS1109: Expression expected.
 tests/cases/conformance/jsx/file.tsx(8,11): error TS2304: Cannot find name 'a'.
 tests/cases/conformance/jsx/file.tsx(8,12): error TS1005: '}' expected.
-tests/cases/conformance/jsx/file.tsx(9,1): error TS17002: Expected corresponding JSX closing tag for 'div'.
+tests/cases/conformance/jsx/file.tsx(9,1): error TS1005: '</' expected.
 
 
-==== tests/cases/conformance/jsx/file.tsx (4 errors) ====
+==== tests/cases/conformance/jsx/file.tsx (5 errors) ====
     
     declare namespace JSX { interface Element { } }
     
     function foo() {
     	var x = <div>  { </div>
+    	         ~~~
+!!! error TS17008: JSX element 'div' has no corresponding closing tag.
     	                 ~~
 !!! error TS1109: Expression expected.
     }
@@ -21,4 +24,4 @@ tests/cases/conformance/jsx/file.tsx(9,1): error TS17002: Expected corresponding
 !!! error TS1005: '}' expected.
     
     
-!!! error TS17002: Expected corresponding JSX closing tag for 'div'.
\ No newline at end of file
+!!! error TS1005: '</' expected.
\ No newline at end of file
diff --git a/tests/baselines/reference/typedArrays.js b/tests/baselines/reference/typedArrays.js
index 89e6f43ecae..6159edc1187 100644
--- a/tests/baselines/reference/typedArrays.js
+++ b/tests/baselines/reference/typedArrays.js
@@ -75,7 +75,6 @@ function CreateIntegerTypedArraysFromArrayLike(obj:ArrayLike<number>) {
     return typedArrays;
 }
 
-/*
 function CreateTypedArraysOf(obj) {
     var typedArrays = [];
     typedArrays[0] = Int8Array.of(...obj);
@@ -90,7 +89,6 @@ function CreateTypedArraysOf(obj) {
 
     return typedArrays;
 }
-*/
 
 function CreateTypedArraysOf2() {
     var typedArrays = [];
@@ -203,7 +201,6 @@ function CreateIntegerTypedArraysFromArrayLike(obj) {
     typedArrays[8] = Uint8ClampedArray.from(obj);
     return typedArrays;
 }
-/*
 function CreateTypedArraysOf(obj) {
     var typedArrays = [];
     typedArrays[0] = Int8Array.of(...obj);
@@ -215,10 +212,8 @@ function CreateTypedArraysOf(obj) {
     typedArrays[6] = Float32Array.of(...obj);
     typedArrays[7] = Float64Array.of(...obj);
     typedArrays[8] = Uint8ClampedArray.of(...obj);
-
     return typedArrays;
 }
-*/
 function CreateTypedArraysOf2() {
     var typedArrays = [];
     typedArrays[0] = Int8Array.of(1, 2, 3, 4);
diff --git a/tests/baselines/reference/typedArrays.symbols b/tests/baselines/reference/typedArrays.symbols
index cf5e68b956a..7282e8b8879 100644
--- a/tests/baselines/reference/typedArrays.symbols
+++ b/tests/baselines/reference/typedArrays.symbols
@@ -307,267 +307,324 @@ function CreateIntegerTypedArraysFromArrayLike(obj:ArrayLike<number>) {
 >typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 62, 7))
 }
 
-/*
 function CreateTypedArraysOf(obj) {
+>CreateTypedArraysOf : Symbol(CreateTypedArraysOf, Decl(typedArrays.ts, 74, 1))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     var typedArrays = [];
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+
     typedArrays[0] = Int8Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Int8Array.of : Symbol(Int8ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Int8Array : Symbol(Int8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Int8ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[1] = Uint8Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Uint8Array.of : Symbol(Uint8ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Uint8Array : Symbol(Uint8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Uint8ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[2] = Int16Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Int16Array.of : Symbol(Int16ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Int16Array : Symbol(Int16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Int16ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[3] = Uint16Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Uint16Array.of : Symbol(Uint16ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Uint16Array : Symbol(Uint16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Uint16ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[4] = Int32Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Int32Array.of : Symbol(Int32ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Int32Array : Symbol(Int32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Int32ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[5] = Uint32Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Uint32Array.of : Symbol(Uint32ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Uint32Array : Symbol(Uint32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Uint32ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[6] = Float32Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Float32Array.of : Symbol(Float32ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Float32Array : Symbol(Float32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Float32ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[7] = Float64Array.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Float64Array.of : Symbol(Float64ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Float64Array : Symbol(Float64Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Float64ArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
+
     typedArrays[8] = Uint8ClampedArray.of(...obj);
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
+>Uint8ClampedArray.of : Symbol(Uint8ClampedArrayConstructor.of, Decl(lib.d.ts, --, --))
+>Uint8ClampedArray : Symbol(Uint8ClampedArray, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
+>of : Symbol(Uint8ClampedArrayConstructor.of, Decl(lib.d.ts, --, --))
+>obj : Symbol(obj, Decl(typedArrays.ts, 76, 29))
 
     return typedArrays;
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 77, 7))
 }
-*/
 
 function CreateTypedArraysOf2() {
->CreateTypedArraysOf2 : Symbol(CreateTypedArraysOf2, Decl(typedArrays.ts, 74, 1))
+>CreateTypedArraysOf2 : Symbol(CreateTypedArraysOf2, Decl(typedArrays.ts, 89, 1))
 
     var typedArrays = [];
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 
     typedArrays[0] = Int8Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Int8Array.of : Symbol(Int8ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Int8Array : Symbol(Int8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Int8ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[1] = Uint8Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Uint8Array.of : Symbol(Uint8ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Uint8Array : Symbol(Uint8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Uint8ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[2] = Int16Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Int16Array.of : Symbol(Int16ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Int16Array : Symbol(Int16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Int16ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[3] = Uint16Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Uint16Array.of : Symbol(Uint16ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Uint16Array : Symbol(Uint16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Uint16ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[4] = Int32Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Int32Array.of : Symbol(Int32ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Int32Array : Symbol(Int32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Int32ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[5] = Uint32Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Uint32Array.of : Symbol(Uint32ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Uint32Array : Symbol(Uint32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Uint32ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[6] = Float32Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Float32Array.of : Symbol(Float32ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Float32Array : Symbol(Float32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Float32ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[7] = Float64Array.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Float64Array.of : Symbol(Float64ArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Float64Array : Symbol(Float64Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Float64ArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     typedArrays[8] = Uint8ClampedArray.of(1,2,3,4);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 >Uint8ClampedArray.of : Symbol(Uint8ClampedArrayConstructor.of, Decl(lib.d.ts, --, --))
 >Uint8ClampedArray : Symbol(Uint8ClampedArray, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >of : Symbol(Uint8ClampedArrayConstructor.of, Decl(lib.d.ts, --, --))
 
     return typedArrays;
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 94, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 92, 7))
 }
 
 function CreateTypedArraysFromMapFn(obj:ArrayLike<number>, mapFn: (n:number, v:number)=> number) {
->CreateTypedArraysFromMapFn : Symbol(CreateTypedArraysFromMapFn, Decl(typedArrays.ts, 106, 1))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
+>CreateTypedArraysFromMapFn : Symbol(CreateTypedArraysFromMapFn, Decl(typedArrays.ts, 104, 1))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
 >ArrayLike : Symbol(ArrayLike, Decl(lib.d.ts, --, --))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
->n : Symbol(n, Decl(typedArrays.ts, 108, 67))
->v : Symbol(v, Decl(typedArrays.ts, 108, 76))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
+>n : Symbol(n, Decl(typedArrays.ts, 106, 67))
+>v : Symbol(v, Decl(typedArrays.ts, 106, 76))
 
     var typedArrays = [];
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 
     typedArrays[0] = Int8Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Int8Array.from : Symbol(Int8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Int8Array : Symbol(Int8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Int8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[1] = Uint8Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Uint8Array.from : Symbol(Uint8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint8Array : Symbol(Uint8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[2] = Int16Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Int16Array.from : Symbol(Int16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Int16Array : Symbol(Int16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Int16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[3] = Uint16Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Uint16Array.from : Symbol(Uint16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint16Array : Symbol(Uint16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[4] = Int32Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Int32Array.from : Symbol(Int32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Int32Array : Symbol(Int32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Int32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[5] = Uint32Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Uint32Array.from : Symbol(Uint32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint32Array : Symbol(Uint32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[6] = Float32Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Float32Array.from : Symbol(Float32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Float32Array : Symbol(Float32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Float32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[7] = Float64Array.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Float64Array.from : Symbol(Float64ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Float64Array : Symbol(Float64Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Float64ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     typedArrays[8] = Uint8ClampedArray.from(obj, mapFn);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 >Uint8ClampedArray.from : Symbol(Uint8ClampedArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint8ClampedArray : Symbol(Uint8ClampedArray, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint8ClampedArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 108, 36))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 108, 58))
+>obj : Symbol(obj, Decl(typedArrays.ts, 106, 36))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 106, 58))
 
     return typedArrays;
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 109, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 107, 7))
 }
 
 function CreateTypedArraysFromThisObj(obj:ArrayLike<number>, mapFn: (n:number, v:number)=> number, thisArg: {}) {
->CreateTypedArraysFromThisObj : Symbol(CreateTypedArraysFromThisObj, Decl(typedArrays.ts, 121, 1))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
+>CreateTypedArraysFromThisObj : Symbol(CreateTypedArraysFromThisObj, Decl(typedArrays.ts, 119, 1))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
 >ArrayLike : Symbol(ArrayLike, Decl(lib.d.ts, --, --))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->n : Symbol(n, Decl(typedArrays.ts, 123, 69))
->v : Symbol(v, Decl(typedArrays.ts, 123, 78))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>n : Symbol(n, Decl(typedArrays.ts, 121, 69))
+>v : Symbol(v, Decl(typedArrays.ts, 121, 78))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     var typedArrays = [];
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 
     typedArrays[0] = Int8Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Int8Array.from : Symbol(Int8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Int8Array : Symbol(Int8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Int8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[1] = Uint8Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Uint8Array.from : Symbol(Uint8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint8Array : Symbol(Uint8Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint8ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[2] = Int16Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Int16Array.from : Symbol(Int16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Int16Array : Symbol(Int16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Int16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[3] = Uint16Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Uint16Array.from : Symbol(Uint16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint16Array : Symbol(Uint16Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint16ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[4] = Int32Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Int32Array.from : Symbol(Int32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Int32Array : Symbol(Int32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Int32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[5] = Uint32Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Uint32Array.from : Symbol(Uint32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint32Array : Symbol(Uint32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[6] = Float32Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Float32Array.from : Symbol(Float32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Float32Array : Symbol(Float32Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Float32ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[7] = Float64Array.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Float64Array.from : Symbol(Float64ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Float64Array : Symbol(Float64Array, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Float64ArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     typedArrays[8] = Uint8ClampedArray.from(obj, mapFn, thisArg);
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 >Uint8ClampedArray.from : Symbol(Uint8ClampedArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >Uint8ClampedArray : Symbol(Uint8ClampedArray, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
 >from : Symbol(Uint8ClampedArrayConstructor.from, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
->obj : Symbol(obj, Decl(typedArrays.ts, 123, 38))
->mapFn : Symbol(mapFn, Decl(typedArrays.ts, 123, 60))
->thisArg : Symbol(thisArg, Decl(typedArrays.ts, 123, 98))
+>obj : Symbol(obj, Decl(typedArrays.ts, 121, 38))
+>mapFn : Symbol(mapFn, Decl(typedArrays.ts, 121, 60))
+>thisArg : Symbol(thisArg, Decl(typedArrays.ts, 121, 98))
 
     return typedArrays;
->typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 124, 7))
+>typedArrays : Symbol(typedArrays, Decl(typedArrays.ts, 122, 7))
 }
diff --git a/tests/baselines/reference/typedArrays.types b/tests/baselines/reference/typedArrays.types
index 9886982c0f2..f7d3cbdd19f 100644
--- a/tests/baselines/reference/typedArrays.types
+++ b/tests/baselines/reference/typedArrays.types
@@ -483,22 +483,125 @@ function CreateIntegerTypedArraysFromArrayLike(obj:ArrayLike<number>) {
 >typedArrays : any[]
 }
 
-/*
 function CreateTypedArraysOf(obj) {
+>CreateTypedArraysOf : (obj: any) => any[]
+>obj : any
+
     var typedArrays = [];
+>typedArrays : any[]
+>[] : undefined[]
+
     typedArrays[0] = Int8Array.of(...obj);
+>typedArrays[0] = Int8Array.of(...obj) : Int8Array
+>typedArrays[0] : any
+>typedArrays : any[]
+>0 : number
+>Int8Array.of(...obj) : Int8Array
+>Int8Array.of : (...items: number[]) => Int8Array
+>Int8Array : Int8ArrayConstructor
+>of : (...items: number[]) => Int8Array
+>...obj : any
+>obj : any
+
     typedArrays[1] = Uint8Array.of(...obj);
+>typedArrays[1] = Uint8Array.of(...obj) : Uint8Array
+>typedArrays[1] : any
+>typedArrays : any[]
+>1 : number
+>Uint8Array.of(...obj) : Uint8Array
+>Uint8Array.of : (...items: number[]) => Uint8Array
+>Uint8Array : Uint8ArrayConstructor
+>of : (...items: number[]) => Uint8Array
+>...obj : any
+>obj : any
+
     typedArrays[2] = Int16Array.of(...obj);
+>typedArrays[2] = Int16Array.of(...obj) : Int16Array
+>typedArrays[2] : any
+>typedArrays : any[]
+>2 : number
+>Int16Array.of(...obj) : Int16Array
+>Int16Array.of : (...items: number[]) => Int16Array
+>Int16Array : Int16ArrayConstructor
+>of : (...items: number[]) => Int16Array
+>...obj : any
+>obj : any
+
     typedArrays[3] = Uint16Array.of(...obj);
+>typedArrays[3] = Uint16Array.of(...obj) : Uint16Array
+>typedArrays[3] : any
+>typedArrays : any[]
+>3 : number
+>Uint16Array.of(...obj) : Uint16Array
+>Uint16Array.of : (...items: number[]) => Uint16Array
+>Uint16Array : Uint16ArrayConstructor
+>of : (...items: number[]) => Uint16Array
+>...obj : any
+>obj : any
+
     typedArrays[4] = Int32Array.of(...obj);
+>typedArrays[4] = Int32Array.of(...obj) : Int32Array
+>typedArrays[4] : any
+>typedArrays : any[]
+>4 : number
+>Int32Array.of(...obj) : Int32Array
+>Int32Array.of : (...items: number[]) => Int32Array
+>Int32Array : Int32ArrayConstructor
+>of : (...items: number[]) => Int32Array
+>...obj : any
+>obj : any
+
     typedArrays[5] = Uint32Array.of(...obj);
+>typedArrays[5] = Uint32Array.of(...obj) : Uint32Array
+>typedArrays[5] : any
+>typedArrays : any[]
+>5 : number
+>Uint32Array.of(...obj) : Uint32Array
+>Uint32Array.of : (...items: number[]) => Uint32Array
+>Uint32Array : Uint32ArrayConstructor
+>of : (...items: number[]) => Uint32Array
+>...obj : any
+>obj : any
+
     typedArrays[6] = Float32Array.of(...obj);
+>typedArrays[6] = Float32Array.of(...obj) : Float32Array
+>typedArrays[6] : any
+>typedArrays : any[]
+>6 : number
+>Float32Array.of(...obj) : Float32Array
+>Float32Array.of : (...items: number[]) => Float32Array
+>Float32Array : Float32ArrayConstructor
+>of : (...items: number[]) => Float32Array
+>...obj : any
+>obj : any
+
     typedArrays[7] = Float64Array.of(...obj);
+>typedArrays[7] = Float64Array.of(...obj) : Float64Array
+>typedArrays[7] : any
+>typedArrays : any[]
+>7 : number
+>Float64Array.of(...obj) : Float64Array
+>Float64Array.of : (...items: number[]) => Float64Array
+>Float64Array : Float64ArrayConstructor
+>of : (...items: number[]) => Float64Array
+>...obj : any
+>obj : any
+
     typedArrays[8] = Uint8ClampedArray.of(...obj);
+>typedArrays[8] = Uint8ClampedArray.of(...obj) : Uint8ClampedArray
+>typedArrays[8] : any
+>typedArrays : any[]
+>8 : number
+>Uint8ClampedArray.of(...obj) : Uint8ClampedArray
+>Uint8ClampedArray.of : (...items: number[]) => Uint8ClampedArray
+>Uint8ClampedArray : Uint8ClampedArrayConstructor
+>of : (...items: number[]) => Uint8ClampedArray
+>...obj : any
+>obj : any
 
     return typedArrays;
+>typedArrays : any[]
 }
-*/
 
 function CreateTypedArraysOf2() {
 >CreateTypedArraysOf2 : () => any[]
diff --git a/tests/baselines/reference/typedArraysCrossAssignability01.errors.txt b/tests/baselines/reference/typedArraysCrossAssignability01.errors.txt
new file mode 100644
index 00000000000..bd3422b4826
--- /dev/null
+++ b/tests/baselines/reference/typedArraysCrossAssignability01.errors.txt
@@ -0,0 +1,545 @@
+tests/cases/compiler/typedArraysCrossAssignability01.ts(14,5): error TS2322: Type 'Uint8Array' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"UInt8Array"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(15,5): error TS2322: Type 'Int16Array' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int16Array"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(16,5): error TS2322: Type 'Uint16Array' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint16Array"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(17,5): error TS2322: Type 'Int32Array' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int32Array"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(18,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(19,5): error TS2322: Type 'Float32Array' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float32Array"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(20,5): error TS2322: Type 'Float64Array' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float64Array"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(21,5): error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Int8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint8ClampedArray"' is not assignable to type '"Int8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(23,5): error TS2322: Type 'Int8Array' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int8Array"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(25,5): error TS2322: Type 'Int16Array' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int16Array"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(26,5): error TS2322: Type 'Uint16Array' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint16Array"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(27,5): error TS2322: Type 'Int32Array' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int32Array"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(28,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(29,5): error TS2322: Type 'Float32Array' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float32Array"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(30,5): error TS2322: Type 'Float64Array' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float64Array"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(31,5): error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Uint8Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint8ClampedArray"' is not assignable to type '"UInt8Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(33,5): error TS2322: Type 'Int8Array' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int8Array"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(34,5): error TS2322: Type 'Uint8Array' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"UInt8Array"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(36,5): error TS2322: Type 'Uint16Array' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint16Array"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(37,5): error TS2322: Type 'Int32Array' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int32Array"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(38,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(39,5): error TS2322: Type 'Float32Array' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float32Array"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(40,5): error TS2322: Type 'Float64Array' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float64Array"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(41,5): error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Int16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint8ClampedArray"' is not assignable to type '"Int16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(43,5): error TS2322: Type 'Int8Array' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int8Array"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(44,5): error TS2322: Type 'Uint8Array' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"UInt8Array"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(45,5): error TS2322: Type 'Int16Array' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int16Array"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(47,5): error TS2322: Type 'Int32Array' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int32Array"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(48,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(49,5): error TS2322: Type 'Float32Array' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float32Array"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(50,5): error TS2322: Type 'Float64Array' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float64Array"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(51,5): error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Uint16Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint8ClampedArray"' is not assignable to type '"Uint16Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(53,5): error TS2322: Type 'Int8Array' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int8Array"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(54,5): error TS2322: Type 'Uint8Array' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"UInt8Array"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(55,5): error TS2322: Type 'Int16Array' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int16Array"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(56,5): error TS2322: Type 'Uint16Array' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint16Array"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(58,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(59,5): error TS2322: Type 'Float32Array' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float32Array"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(60,5): error TS2322: Type 'Float64Array' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float64Array"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(61,5): error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Int32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint8ClampedArray"' is not assignable to type '"Int32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(63,5): error TS2322: Type 'Int8Array' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int8Array"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(64,5): error TS2322: Type 'Uint8Array' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"UInt8Array"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(65,5): error TS2322: Type 'Int16Array' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int16Array"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(66,5): error TS2322: Type 'Uint16Array' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint16Array"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(67,5): error TS2322: Type 'Int32Array' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int32Array"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(68,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(70,5): error TS2322: Type 'Float64Array' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float64Array"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(71,5): error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Float32Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint8ClampedArray"' is not assignable to type '"Float32Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(73,5): error TS2322: Type 'Int8Array' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int8Array"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(74,5): error TS2322: Type 'Uint8Array' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"UInt8Array"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(75,5): error TS2322: Type 'Int16Array' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int16Array"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(76,5): error TS2322: Type 'Uint16Array' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint16Array"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(77,5): error TS2322: Type 'Int32Array' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int32Array"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(78,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(79,5): error TS2322: Type 'Float32Array' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float32Array"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(81,5): error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Float64Array'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint8ClampedArray"' is not assignable to type '"Float64Array"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(83,5): error TS2322: Type 'Int8Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int8Array"' is not assignable to type '"Uint8ClampedArray"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(84,5): error TS2322: Type 'Uint8Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"UInt8Array"' is not assignable to type '"Uint8ClampedArray"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(85,5): error TS2322: Type 'Int16Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int16Array"' is not assignable to type '"Uint8ClampedArray"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(86,5): error TS2322: Type 'Uint16Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint16Array"' is not assignable to type '"Uint8ClampedArray"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(87,5): error TS2322: Type 'Int32Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Int32Array"' is not assignable to type '"Uint8ClampedArray"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(88,5): error TS2322: Type 'Uint32Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Uint32Array"' is not assignable to type '"Uint8ClampedArray"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(89,5): error TS2322: Type 'Float32Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float32Array"' is not assignable to type '"Uint8ClampedArray"'.
+tests/cases/compiler/typedArraysCrossAssignability01.ts(90,5): error TS2322: Type 'Float64Array' is not assignable to type 'Uint8ClampedArray'.
+  Types of property '[Symbol.toStringTag]' are incompatible.
+    Type '"Float64Array"' is not assignable to type '"Uint8ClampedArray"'.
+
+
+==== tests/cases/compiler/typedArraysCrossAssignability01.ts (64 errors) ====
+    
+    function CheckAssignability() {
+        let arr_Int8Array           = new Int8Array(1);
+        let arr_Uint8Array          = new Uint8Array(1);
+        let arr_Int16Array          = new Int16Array(1);
+        let arr_Uint16Array         = new Uint16Array(1);
+        let arr_Int32Array          = new Int32Array(1);
+        let arr_Uint32Array         = new Uint32Array(1);
+        let arr_Float32Array        = new Float32Array(1);
+        let arr_Float64Array        = new Float64Array(1);
+        let arr_Uint8ClampedArray   = new Uint8ClampedArray(1);
+    
+        arr_Int8Array = arr_Int8Array;
+        arr_Int8Array = arr_Uint8Array;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8Array' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"UInt8Array"' is not assignable to type '"Int8Array"'.
+        arr_Int8Array = arr_Int16Array;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int16Array' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int16Array"' is not assignable to type '"Int8Array"'.
+        arr_Int8Array = arr_Uint16Array;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint16Array' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint16Array"' is not assignable to type '"Int8Array"'.
+        arr_Int8Array = arr_Int32Array;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int32Array' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int32Array"' is not assignable to type '"Int8Array"'.
+        arr_Int8Array = arr_Uint32Array;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"Int8Array"'.
+        arr_Int8Array = arr_Float32Array;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float32Array' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float32Array"' is not assignable to type '"Int8Array"'.
+        arr_Int8Array = arr_Float64Array;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float64Array' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float64Array"' is not assignable to type '"Int8Array"'.
+        arr_Int8Array = arr_Uint8ClampedArray;
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Int8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint8ClampedArray"' is not assignable to type '"Int8Array"'.
+    
+        arr_Uint8Array = arr_Int8Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int8Array' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int8Array"' is not assignable to type '"UInt8Array"'.
+        arr_Uint8Array = arr_Uint8Array;
+        arr_Uint8Array = arr_Int16Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int16Array' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int16Array"' is not assignable to type '"UInt8Array"'.
+        arr_Uint8Array = arr_Uint16Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint16Array' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint16Array"' is not assignable to type '"UInt8Array"'.
+        arr_Uint8Array = arr_Int32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int32Array' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int32Array"' is not assignable to type '"UInt8Array"'.
+        arr_Uint8Array = arr_Uint32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"UInt8Array"'.
+        arr_Uint8Array = arr_Float32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float32Array' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float32Array"' is not assignable to type '"UInt8Array"'.
+        arr_Uint8Array = arr_Float64Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float64Array' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float64Array"' is not assignable to type '"UInt8Array"'.
+        arr_Uint8Array = arr_Uint8ClampedArray;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Uint8Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint8ClampedArray"' is not assignable to type '"UInt8Array"'.
+    
+        arr_Int16Array = arr_Int8Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int8Array' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int8Array"' is not assignable to type '"Int16Array"'.
+        arr_Int16Array = arr_Uint8Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8Array' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"UInt8Array"' is not assignable to type '"Int16Array"'.
+        arr_Int16Array = arr_Int16Array;
+        arr_Int16Array = arr_Uint16Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint16Array' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint16Array"' is not assignable to type '"Int16Array"'.
+        arr_Int16Array = arr_Int32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int32Array' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int32Array"' is not assignable to type '"Int16Array"'.
+        arr_Int16Array = arr_Uint32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"Int16Array"'.
+        arr_Int16Array = arr_Float32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float32Array' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float32Array"' is not assignable to type '"Int16Array"'.
+        arr_Int16Array = arr_Float64Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float64Array' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float64Array"' is not assignable to type '"Int16Array"'.
+        arr_Int16Array = arr_Uint8ClampedArray;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Int16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint8ClampedArray"' is not assignable to type '"Int16Array"'.
+    
+        arr_Uint16Array = arr_Int8Array;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int8Array' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int8Array"' is not assignable to type '"Uint16Array"'.
+        arr_Uint16Array = arr_Uint8Array;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8Array' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"UInt8Array"' is not assignable to type '"Uint16Array"'.
+        arr_Uint16Array = arr_Int16Array;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int16Array' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int16Array"' is not assignable to type '"Uint16Array"'.
+        arr_Uint16Array = arr_Uint16Array;
+        arr_Uint16Array = arr_Int32Array;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int32Array' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int32Array"' is not assignable to type '"Uint16Array"'.
+        arr_Uint16Array = arr_Uint32Array;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"Uint16Array"'.
+        arr_Uint16Array = arr_Float32Array;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float32Array' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float32Array"' is not assignable to type '"Uint16Array"'.
+        arr_Uint16Array = arr_Float64Array;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float64Array' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float64Array"' is not assignable to type '"Uint16Array"'.
+        arr_Uint16Array = arr_Uint8ClampedArray;
+        ~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Uint16Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint8ClampedArray"' is not assignable to type '"Uint16Array"'.
+    
+        arr_Int32Array = arr_Int8Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int8Array' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int8Array"' is not assignable to type '"Int32Array"'.
+        arr_Int32Array = arr_Uint8Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8Array' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"UInt8Array"' is not assignable to type '"Int32Array"'.
+        arr_Int32Array = arr_Int16Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int16Array' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int16Array"' is not assignable to type '"Int32Array"'.
+        arr_Int32Array = arr_Uint16Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint16Array' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint16Array"' is not assignable to type '"Int32Array"'.
+        arr_Int32Array = arr_Int32Array;
+        arr_Int32Array = arr_Uint32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"Int32Array"'.
+        arr_Int32Array = arr_Float32Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float32Array' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float32Array"' is not assignable to type '"Int32Array"'.
+        arr_Int32Array = arr_Float64Array;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float64Array' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float64Array"' is not assignable to type '"Int32Array"'.
+        arr_Int32Array = arr_Uint8ClampedArray;
+        ~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Int32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint8ClampedArray"' is not assignable to type '"Int32Array"'.
+    
+        arr_Float32Array = arr_Int8Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int8Array' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int8Array"' is not assignable to type '"Float32Array"'.
+        arr_Float32Array = arr_Uint8Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8Array' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"UInt8Array"' is not assignable to type '"Float32Array"'.
+        arr_Float32Array = arr_Int16Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int16Array' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int16Array"' is not assignable to type '"Float32Array"'.
+        arr_Float32Array = arr_Uint16Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint16Array' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint16Array"' is not assignable to type '"Float32Array"'.
+        arr_Float32Array = arr_Int32Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int32Array' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int32Array"' is not assignable to type '"Float32Array"'.
+        arr_Float32Array = arr_Uint32Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"Float32Array"'.
+        arr_Float32Array = arr_Float32Array;
+        arr_Float32Array = arr_Float64Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float64Array' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float64Array"' is not assignable to type '"Float32Array"'.
+        arr_Float32Array = arr_Uint8ClampedArray;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Float32Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint8ClampedArray"' is not assignable to type '"Float32Array"'.
+    
+        arr_Float64Array = arr_Int8Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int8Array' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int8Array"' is not assignable to type '"Float64Array"'.
+        arr_Float64Array = arr_Uint8Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8Array' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"UInt8Array"' is not assignable to type '"Float64Array"'.
+        arr_Float64Array = arr_Int16Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int16Array' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int16Array"' is not assignable to type '"Float64Array"'.
+        arr_Float64Array = arr_Uint16Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint16Array' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint16Array"' is not assignable to type '"Float64Array"'.
+        arr_Float64Array = arr_Int32Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int32Array' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int32Array"' is not assignable to type '"Float64Array"'.
+        arr_Float64Array = arr_Uint32Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"Float64Array"'.
+        arr_Float64Array = arr_Float32Array;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float32Array' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float32Array"' is not assignable to type '"Float64Array"'.
+        arr_Float64Array = arr_Float64Array;
+        arr_Float64Array = arr_Uint8ClampedArray;
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8ClampedArray' is not assignable to type 'Float64Array'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint8ClampedArray"' is not assignable to type '"Float64Array"'.
+    
+        arr_Uint8ClampedArray = arr_Int8Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int8Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int8Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Uint8Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint8Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"UInt8Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Int16Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int16Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int16Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Uint16Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint16Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint16Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Int32Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Int32Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Int32Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Uint32Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Uint32Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Uint32Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Float32Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float32Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float32Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Float64Array;
+        ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type 'Float64Array' is not assignable to type 'Uint8ClampedArray'.
+!!! error TS2322:   Types of property '[Symbol.toStringTag]' are incompatible.
+!!! error TS2322:     Type '"Float64Array"' is not assignable to type '"Uint8ClampedArray"'.
+        arr_Uint8ClampedArray = arr_Uint8ClampedArray;
+        
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/typedArraysCrossAssignability01.js b/tests/baselines/reference/typedArraysCrossAssignability01.js
new file mode 100644
index 00000000000..9572bfcaf59
--- /dev/null
+++ b/tests/baselines/reference/typedArraysCrossAssignability01.js
@@ -0,0 +1,180 @@
+//// [typedArraysCrossAssignability01.ts]
+
+function CheckAssignability() {
+    let arr_Int8Array           = new Int8Array(1);
+    let arr_Uint8Array          = new Uint8Array(1);
+    let arr_Int16Array          = new Int16Array(1);
+    let arr_Uint16Array         = new Uint16Array(1);
+    let arr_Int32Array          = new Int32Array(1);
+    let arr_Uint32Array         = new Uint32Array(1);
+    let arr_Float32Array        = new Float32Array(1);
+    let arr_Float64Array        = new Float64Array(1);
+    let arr_Uint8ClampedArray   = new Uint8ClampedArray(1);
+
+    arr_Int8Array = arr_Int8Array;
+    arr_Int8Array = arr_Uint8Array;
+    arr_Int8Array = arr_Int16Array;
+    arr_Int8Array = arr_Uint16Array;
+    arr_Int8Array = arr_Int32Array;
+    arr_Int8Array = arr_Uint32Array;
+    arr_Int8Array = arr_Float32Array;
+    arr_Int8Array = arr_Float64Array;
+    arr_Int8Array = arr_Uint8ClampedArray;
+
+    arr_Uint8Array = arr_Int8Array;
+    arr_Uint8Array = arr_Uint8Array;
+    arr_Uint8Array = arr_Int16Array;
+    arr_Uint8Array = arr_Uint16Array;
+    arr_Uint8Array = arr_Int32Array;
+    arr_Uint8Array = arr_Uint32Array;
+    arr_Uint8Array = arr_Float32Array;
+    arr_Uint8Array = arr_Float64Array;
+    arr_Uint8Array = arr_Uint8ClampedArray;
+
+    arr_Int16Array = arr_Int8Array;
+    arr_Int16Array = arr_Uint8Array;
+    arr_Int16Array = arr_Int16Array;
+    arr_Int16Array = arr_Uint16Array;
+    arr_Int16Array = arr_Int32Array;
+    arr_Int16Array = arr_Uint32Array;
+    arr_Int16Array = arr_Float32Array;
+    arr_Int16Array = arr_Float64Array;
+    arr_Int16Array = arr_Uint8ClampedArray;
+
+    arr_Uint16Array = arr_Int8Array;
+    arr_Uint16Array = arr_Uint8Array;
+    arr_Uint16Array = arr_Int16Array;
+    arr_Uint16Array = arr_Uint16Array;
+    arr_Uint16Array = arr_Int32Array;
+    arr_Uint16Array = arr_Uint32Array;
+    arr_Uint16Array = arr_Float32Array;
+    arr_Uint16Array = arr_Float64Array;
+    arr_Uint16Array = arr_Uint8ClampedArray;
+
+    arr_Int32Array = arr_Int8Array;
+    arr_Int32Array = arr_Uint8Array;
+    arr_Int32Array = arr_Int16Array;
+    arr_Int32Array = arr_Uint16Array;
+    arr_Int32Array = arr_Int32Array;
+    arr_Int32Array = arr_Uint32Array;
+    arr_Int32Array = arr_Float32Array;
+    arr_Int32Array = arr_Float64Array;
+    arr_Int32Array = arr_Uint8ClampedArray;
+
+    arr_Float32Array = arr_Int8Array;
+    arr_Float32Array = arr_Uint8Array;
+    arr_Float32Array = arr_Int16Array;
+    arr_Float32Array = arr_Uint16Array;
+    arr_Float32Array = arr_Int32Array;
+    arr_Float32Array = arr_Uint32Array;
+    arr_Float32Array = arr_Float32Array;
+    arr_Float32Array = arr_Float64Array;
+    arr_Float32Array = arr_Uint8ClampedArray;
+
+    arr_Float64Array = arr_Int8Array;
+    arr_Float64Array = arr_Uint8Array;
+    arr_Float64Array = arr_Int16Array;
+    arr_Float64Array = arr_Uint16Array;
+    arr_Float64Array = arr_Int32Array;
+    arr_Float64Array = arr_Uint32Array;
+    arr_Float64Array = arr_Float32Array;
+    arr_Float64Array = arr_Float64Array;
+    arr_Float64Array = arr_Uint8ClampedArray;
+
+    arr_Uint8ClampedArray = arr_Int8Array;
+    arr_Uint8ClampedArray = arr_Uint8Array;
+    arr_Uint8ClampedArray = arr_Int16Array;
+    arr_Uint8ClampedArray = arr_Uint16Array;
+    arr_Uint8ClampedArray = arr_Int32Array;
+    arr_Uint8ClampedArray = arr_Uint32Array;
+    arr_Uint8ClampedArray = arr_Float32Array;
+    arr_Uint8ClampedArray = arr_Float64Array;
+    arr_Uint8ClampedArray = arr_Uint8ClampedArray;
+    
+}
+
+
+//// [typedArraysCrossAssignability01.js]
+function CheckAssignability() {
+    let arr_Int8Array = new Int8Array(1);
+    let arr_Uint8Array = new Uint8Array(1);
+    let arr_Int16Array = new Int16Array(1);
+    let arr_Uint16Array = new Uint16Array(1);
+    let arr_Int32Array = new Int32Array(1);
+    let arr_Uint32Array = new Uint32Array(1);
+    let arr_Float32Array = new Float32Array(1);
+    let arr_Float64Array = new Float64Array(1);
+    let arr_Uint8ClampedArray = new Uint8ClampedArray(1);
+    arr_Int8Array = arr_Int8Array;
+    arr_Int8Array = arr_Uint8Array;
+    arr_Int8Array = arr_Int16Array;
+    arr_Int8Array = arr_Uint16Array;
+    arr_Int8Array = arr_Int32Array;
+    arr_Int8Array = arr_Uint32Array;
+    arr_Int8Array = arr_Float32Array;
+    arr_Int8Array = arr_Float64Array;
+    arr_Int8Array = arr_Uint8ClampedArray;
+    arr_Uint8Array = arr_Int8Array;
+    arr_Uint8Array = arr_Uint8Array;
+    arr_Uint8Array = arr_Int16Array;
+    arr_Uint8Array = arr_Uint16Array;
+    arr_Uint8Array = arr_Int32Array;
+    arr_Uint8Array = arr_Uint32Array;
+    arr_Uint8Array = arr_Float32Array;
+    arr_Uint8Array = arr_Float64Array;
+    arr_Uint8Array = arr_Uint8ClampedArray;
+    arr_Int16Array = arr_Int8Array;
+    arr_Int16Array = arr_Uint8Array;
+    arr_Int16Array = arr_Int16Array;
+    arr_Int16Array = arr_Uint16Array;
+    arr_Int16Array = arr_Int32Array;
+    arr_Int16Array = arr_Uint32Array;
+    arr_Int16Array = arr_Float32Array;
+    arr_Int16Array = arr_Float64Array;
+    arr_Int16Array = arr_Uint8ClampedArray;
+    arr_Uint16Array = arr_Int8Array;
+    arr_Uint16Array = arr_Uint8Array;
+    arr_Uint16Array = arr_Int16Array;
+    arr_Uint16Array = arr_Uint16Array;
+    arr_Uint16Array = arr_Int32Array;
+    arr_Uint16Array = arr_Uint32Array;
+    arr_Uint16Array = arr_Float32Array;
+    arr_Uint16Array = arr_Float64Array;
+    arr_Uint16Array = arr_Uint8ClampedArray;
+    arr_Int32Array = arr_Int8Array;
+    arr_Int32Array = arr_Uint8Array;
+    arr_Int32Array = arr_Int16Array;
+    arr_Int32Array = arr_Uint16Array;
+    arr_Int32Array = arr_Int32Array;
+    arr_Int32Array = arr_Uint32Array;
+    arr_Int32Array = arr_Float32Array;
+    arr_Int32Array = arr_Float64Array;
+    arr_Int32Array = arr_Uint8ClampedArray;
+    arr_Float32Array = arr_Int8Array;
+    arr_Float32Array = arr_Uint8Array;
+    arr_Float32Array = arr_Int16Array;
+    arr_Float32Array = arr_Uint16Array;
+    arr_Float32Array = arr_Int32Array;
+    arr_Float32Array = arr_Uint32Array;
+    arr_Float32Array = arr_Float32Array;
+    arr_Float32Array = arr_Float64Array;
+    arr_Float32Array = arr_Uint8ClampedArray;
+    arr_Float64Array = arr_Int8Array;
+    arr_Float64Array = arr_Uint8Array;
+    arr_Float64Array = arr_Int16Array;
+    arr_Float64Array = arr_Uint16Array;
+    arr_Float64Array = arr_Int32Array;
+    arr_Float64Array = arr_Uint32Array;
+    arr_Float64Array = arr_Float32Array;
+    arr_Float64Array = arr_Float64Array;
+    arr_Float64Array = arr_Uint8ClampedArray;
+    arr_Uint8ClampedArray = arr_Int8Array;
+    arr_Uint8ClampedArray = arr_Uint8Array;
+    arr_Uint8ClampedArray = arr_Int16Array;
+    arr_Uint8ClampedArray = arr_Uint16Array;
+    arr_Uint8ClampedArray = arr_Int32Array;
+    arr_Uint8ClampedArray = arr_Uint32Array;
+    arr_Uint8ClampedArray = arr_Float32Array;
+    arr_Uint8ClampedArray = arr_Float64Array;
+    arr_Uint8ClampedArray = arr_Uint8ClampedArray;
+}
diff --git a/tests/cases/compiler/typedArrays.ts b/tests/cases/compiler/typedArrays.ts
index 4508632f6d6..602e15dc2d7 100644
--- a/tests/cases/compiler/typedArrays.ts
+++ b/tests/cases/compiler/typedArrays.ts
@@ -75,7 +75,6 @@ function CreateIntegerTypedArraysFromArrayLike(obj:ArrayLike<number>) {
     return typedArrays;
 }
 
-/*
 function CreateTypedArraysOf(obj) {
     var typedArrays = [];
     typedArrays[0] = Int8Array.of(...obj);
@@ -90,7 +89,6 @@ function CreateTypedArraysOf(obj) {
 
     return typedArrays;
 }
-*/
 
 function CreateTypedArraysOf2() {
     var typedArrays = [];
diff --git a/tests/cases/compiler/typedArraysCrossAssignability01.ts b/tests/cases/compiler/typedArraysCrossAssignability01.ts
new file mode 100644
index 00000000000..27607b64161
--- /dev/null
+++ b/tests/cases/compiler/typedArraysCrossAssignability01.ts
@@ -0,0 +1,94 @@
+// @target: ES6
+
+function CheckAssignability() {
+    let arr_Int8Array           = new Int8Array(1);
+    let arr_Uint8Array          = new Uint8Array(1);
+    let arr_Int16Array          = new Int16Array(1);
+    let arr_Uint16Array         = new Uint16Array(1);
+    let arr_Int32Array          = new Int32Array(1);
+    let arr_Uint32Array         = new Uint32Array(1);
+    let arr_Float32Array        = new Float32Array(1);
+    let arr_Float64Array        = new Float64Array(1);
+    let arr_Uint8ClampedArray   = new Uint8ClampedArray(1);
+
+    arr_Int8Array = arr_Int8Array;
+    arr_Int8Array = arr_Uint8Array;
+    arr_Int8Array = arr_Int16Array;
+    arr_Int8Array = arr_Uint16Array;
+    arr_Int8Array = arr_Int32Array;
+    arr_Int8Array = arr_Uint32Array;
+    arr_Int8Array = arr_Float32Array;
+    arr_Int8Array = arr_Float64Array;
+    arr_Int8Array = arr_Uint8ClampedArray;
+
+    arr_Uint8Array = arr_Int8Array;
+    arr_Uint8Array = arr_Uint8Array;
+    arr_Uint8Array = arr_Int16Array;
+    arr_Uint8Array = arr_Uint16Array;
+    arr_Uint8Array = arr_Int32Array;
+    arr_Uint8Array = arr_Uint32Array;
+    arr_Uint8Array = arr_Float32Array;
+    arr_Uint8Array = arr_Float64Array;
+    arr_Uint8Array = arr_Uint8ClampedArray;
+
+    arr_Int16Array = arr_Int8Array;
+    arr_Int16Array = arr_Uint8Array;
+    arr_Int16Array = arr_Int16Array;
+    arr_Int16Array = arr_Uint16Array;
+    arr_Int16Array = arr_Int32Array;
+    arr_Int16Array = arr_Uint32Array;
+    arr_Int16Array = arr_Float32Array;
+    arr_Int16Array = arr_Float64Array;
+    arr_Int16Array = arr_Uint8ClampedArray;
+
+    arr_Uint16Array = arr_Int8Array;
+    arr_Uint16Array = arr_Uint8Array;
+    arr_Uint16Array = arr_Int16Array;
+    arr_Uint16Array = arr_Uint16Array;
+    arr_Uint16Array = arr_Int32Array;
+    arr_Uint16Array = arr_Uint32Array;
+    arr_Uint16Array = arr_Float32Array;
+    arr_Uint16Array = arr_Float64Array;
+    arr_Uint16Array = arr_Uint8ClampedArray;
+
+    arr_Int32Array = arr_Int8Array;
+    arr_Int32Array = arr_Uint8Array;
+    arr_Int32Array = arr_Int16Array;
+    arr_Int32Array = arr_Uint16Array;
+    arr_Int32Array = arr_Int32Array;
+    arr_Int32Array = arr_Uint32Array;
+    arr_Int32Array = arr_Float32Array;
+    arr_Int32Array = arr_Float64Array;
+    arr_Int32Array = arr_Uint8ClampedArray;
+
+    arr_Float32Array = arr_Int8Array;
+    arr_Float32Array = arr_Uint8Array;
+    arr_Float32Array = arr_Int16Array;
+    arr_Float32Array = arr_Uint16Array;
+    arr_Float32Array = arr_Int32Array;
+    arr_Float32Array = arr_Uint32Array;
+    arr_Float32Array = arr_Float32Array;
+    arr_Float32Array = arr_Float64Array;
+    arr_Float32Array = arr_Uint8ClampedArray;
+
+    arr_Float64Array = arr_Int8Array;
+    arr_Float64Array = arr_Uint8Array;
+    arr_Float64Array = arr_Int16Array;
+    arr_Float64Array = arr_Uint16Array;
+    arr_Float64Array = arr_Int32Array;
+    arr_Float64Array = arr_Uint32Array;
+    arr_Float64Array = arr_Float32Array;
+    arr_Float64Array = arr_Float64Array;
+    arr_Float64Array = arr_Uint8ClampedArray;
+
+    arr_Uint8ClampedArray = arr_Int8Array;
+    arr_Uint8ClampedArray = arr_Uint8Array;
+    arr_Uint8ClampedArray = arr_Int16Array;
+    arr_Uint8ClampedArray = arr_Uint16Array;
+    arr_Uint8ClampedArray = arr_Int32Array;
+    arr_Uint8ClampedArray = arr_Uint32Array;
+    arr_Uint8ClampedArray = arr_Float32Array;
+    arr_Uint8ClampedArray = arr_Float64Array;
+    arr_Uint8ClampedArray = arr_Uint8ClampedArray;
+    
+}
diff --git a/tests/cases/conformance/jsx/jsxParsingError2.tsx b/tests/cases/conformance/jsx/jsxParsingError2.tsx
new file mode 100644
index 00000000000..241978106ae
--- /dev/null
+++ b/tests/cases/conformance/jsx/jsxParsingError2.tsx
@@ -0,0 +1,28 @@
+//@jsx: preserve
+
+//@filename: file.tsx
+declare module JSX {
+	interface Element { }
+	interface IntrinsicElements {
+		[s: string]: any;
+	}
+}
+
+// @filename: Error1.tsx
+// Issue error about missing span closing tag, not missing div closing tag
+let x1 = <div><span></div>;
+
+// @filename: Error2.tsx
+let x2 = <div></span>;
+
+
+// @filename: Error3.tsx
+let x3 = <div>;
+
+
+// @filename: Error4.tsx
+let x4 = <div><div></span>;
+
+// @filename: Error5.tsx
+let x5 = <div><span>
+
diff --git a/tests/cases/unittests/moduleResolution.ts b/tests/cases/unittests/moduleResolution.ts
index 5b924650401..81d7c5f8b2e 100644
--- a/tests/cases/unittests/moduleResolution.ts
+++ b/tests/cases/unittests/moduleResolution.ts
@@ -26,15 +26,36 @@ module ts {
         content?: string
     }
 
-    function createModuleResolutionHost(...files: File[]): ModuleResolutionHost {
+    function createModuleResolutionHost(hasDirectoryExists: boolean, ...files: File[]): ModuleResolutionHost {
         let map = arrayToMap(files, f => f.name);
 
-        return { fileExists, readFile };
-
-        function fileExists(path: string): boolean {
-            return hasProperty(map, path);
+        if (hasDirectoryExists) {
+            const directories: Map<string> = {};
+            for (const f of files) {
+                let name = getDirectoryPath(f.name);
+                while (true) {
+                    directories[name] = name;
+                    let baseName = getDirectoryPath(name);
+                    if (baseName === name) {
+                        break;
+                    }
+                    name = baseName;
+                }
+            }
+            return {
+                readFile,
+                directoryExists: path => { 
+                    return hasProperty(directories, path); 
+                },
+                fileExists: path => {
+                    assert.isTrue(hasProperty(directories, getDirectoryPath(path)), "'fileExists' request in non-existing directory");
+                    return hasProperty(map, path);
+                }
+            }
+        }
+        else {
+            return { readFile, fileExists: path => hasProperty(map, path), };
         }
-
         function readFile(path: string): string {
             return hasProperty(map, path) ? map[path].content : undefined;
         }
@@ -51,9 +72,14 @@ module ts {
 
         function testLoadAsFile(containingFileName: string, moduleFileNameNoExt: string, moduleName: string): void {
             for (let ext of supportedTypeScriptExtensions) {
+                test(ext, /*hasDirectoryExists*/ false);
+                test(ext, /*hasDirectoryExists*/ true);
+            }
+
+            function test(ext: string, hasDirectoryExists: boolean) {
                 let containingFile = { name: containingFileName }
                 let moduleFile = { name: moduleFileNameNoExt + ext }
-                let resolution = nodeModuleNameResolver(moduleName, containingFile.name, {}, createModuleResolutionHost(containingFile, moduleFile));
+                let resolution = nodeModuleNameResolver(moduleName, containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
                 assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
                 assert.equal(!!resolution.resolvedModule.isExternalLibraryImport, false);
 
@@ -69,6 +95,7 @@ module ts {
                 }
 
                 assert.deepEqual(resolution.failedLookupLocations, failedLookupLocations);
+
             }
         }
 
@@ -89,14 +116,19 @@ module ts {
         });
 
         function testLoadingFromPackageJson(containingFileName: string, packageJsonFileName: string, fieldRef: string, moduleFileName: string, moduleName: string): void {
-            let containingFile = { name: containingFileName };
-            let packageJson = { name: packageJsonFileName, content: JSON.stringify({ "typings": fieldRef }) };
-            let moduleFile = { name: moduleFileName };
-            let resolution = nodeModuleNameResolver(moduleName, containingFile.name, {}, createModuleResolutionHost(containingFile, packageJson, moduleFile));
-            assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
-            assert.equal(!!resolution.resolvedModule.isExternalLibraryImport, false);
-            // expect three failed lookup location - attempt to load module as file with all supported extensions
-            assert.equal(resolution.failedLookupLocations.length, supportedTypeScriptExtensions.length);
+            test(/*hasDirectoryExists*/ false);
+            test(/*hasDirectoryExists*/ true);
+
+            function test(hasDirectoryExists: boolean) {
+                let containingFile = { name: containingFileName };
+                let packageJson = { name: packageJsonFileName, content: JSON.stringify({ "typings": fieldRef }) };
+                let moduleFile = { name: moduleFileName };
+                let resolution = nodeModuleNameResolver(moduleName, containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, packageJson, moduleFile));
+                assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
+                assert.equal(!!resolution.resolvedModule.isExternalLibraryImport, false);
+                // expect three failed lookup location - attempt to load module as file with all supported extensions
+                assert.equal(resolution.failedLookupLocations.length, supportedTypeScriptExtensions.length);
+            }
         }
 
         it("module name as directory - load from 'typings'", () => {
@@ -107,16 +139,21 @@ module ts {
         });
 
         function testTypingsIgnored(typings: any): void {
-            let containingFile = { name: "/a/b.ts" };
-            let packageJson = { name: "/node_modules/b/package.json", content: JSON.stringify({ "typings": typings }) };
-            let moduleFile = { name: "/a/b.d.ts" };
+            test(/*hasDirectoryExists*/ false);
+            test(/*hasDirectoryExists*/ true);
 
-            let indexPath = "/node_modules/b/index.d.ts";
-            let indexFile = { name: indexPath }
+            function test(hasDirectoryExists: boolean) {
+                let containingFile = { name: "/a/b.ts" };
+                let packageJson = { name: "/node_modules/b/package.json", content: JSON.stringify({ "typings": typings }) };
+                let moduleFile = { name: "/a/b.d.ts" };
 
-            let resolution = nodeModuleNameResolver("b", containingFile.name, {}, createModuleResolutionHost(containingFile, packageJson, moduleFile, indexFile));
+                let indexPath = "/node_modules/b/index.d.ts";
+                let indexFile = { name: indexPath }
 
-            assert.equal(resolution.resolvedModule.resolvedFileName, indexPath);
+                let resolution = nodeModuleNameResolver("b", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, packageJson, moduleFile, indexFile));
+
+                assert.equal(resolution.resolvedModule.resolvedFileName, indexPath);
+            }
         }
 
         it("module name as directory - handle invalid 'typings'", () => {
@@ -128,89 +165,110 @@ module ts {
         });
 
         it("module name as directory - load index.d.ts", () => {
-            let containingFile = { name: "/a/b/c.ts" };
-            let packageJson = { name: "/a/b/foo/package.json", content: JSON.stringify({ main: "/c/d" }) };
-            let indexFile = { name: "/a/b/foo/index.d.ts" };
-            let resolution = nodeModuleNameResolver("./foo", containingFile.name, {}, createModuleResolutionHost(containingFile, packageJson, indexFile));
-            assert.equal(resolution.resolvedModule.resolvedFileName, indexFile.name);
-            assert.equal(!!resolution.resolvedModule.isExternalLibraryImport, false);
-            assert.deepEqual(resolution.failedLookupLocations, [
-                "/a/b/foo.ts",
-                "/a/b/foo.tsx",
-                "/a/b/foo.d.ts",
-                "/a/b/foo/index.ts",
-                "/a/b/foo/index.tsx",
-            ]);
+            test(/*hasDirectoryExists*/ false);
+            test(/*hasDirectoryExists*/ true);
+
+            function test(hasDirectoryExists: boolean) {
+                let containingFile = { name: "/a/b/c.ts" };
+                let packageJson = { name: "/a/b/foo/package.json", content: JSON.stringify({ main: "/c/d" }) };
+                let indexFile = { name: "/a/b/foo/index.d.ts" };
+                let resolution = nodeModuleNameResolver("./foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, packageJson, indexFile));
+                assert.equal(resolution.resolvedModule.resolvedFileName, indexFile.name);
+                assert.equal(!!resolution.resolvedModule.isExternalLibraryImport, false);
+                assert.deepEqual(resolution.failedLookupLocations, [
+                    "/a/b/foo.ts",
+                    "/a/b/foo.tsx",
+                    "/a/b/foo.d.ts",
+                    "/a/b/foo/index.ts",
+                    "/a/b/foo/index.tsx",
+                ]);
+            }
         });
     });
 
     describe("Node module resolution - non-relative paths", () => {
         it("load module as file - ts files not loaded", () => {
-            let containingFile = { name: "/a/b/c/d/e.ts" };
-            let moduleFile = { name: "/a/b/node_modules/foo.ts" };
-            let resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(containingFile, moduleFile));
-            assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
-            assert.deepEqual(resolution.failedLookupLocations, [
-                "/a/b/c/d/node_modules/foo.ts",
-                "/a/b/c/d/node_modules/foo.tsx",
-                "/a/b/c/d/node_modules/foo.d.ts",
-                "/a/b/c/d/node_modules/foo/package.json",
-                "/a/b/c/d/node_modules/foo/index.ts",
-                "/a/b/c/d/node_modules/foo/index.tsx",
-                "/a/b/c/d/node_modules/foo/index.d.ts",
-                "/a/b/c/node_modules/foo.ts",
-                "/a/b/c/node_modules/foo.tsx",
-                "/a/b/c/node_modules/foo.d.ts",
-                "/a/b/c/node_modules/foo/package.json",
-                "/a/b/c/node_modules/foo/index.ts",
-                "/a/b/c/node_modules/foo/index.tsx",
-                "/a/b/c/node_modules/foo/index.d.ts",
-            ])
+            test(/*hasDirectoryExists*/ false);
+            test(/*hasDirectoryExists*/ true);
+
+            function test(hasDirectoryExists: boolean) {
+                let containingFile = { name: "/a/b/c/d/e.ts" };
+                let moduleFile = { name: "/a/b/node_modules/foo.ts" };
+                let resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
+                assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
+                assert.deepEqual(resolution.failedLookupLocations, [
+                    "/a/b/c/d/node_modules/foo.ts",
+                    "/a/b/c/d/node_modules/foo.tsx",
+                    "/a/b/c/d/node_modules/foo.d.ts",
+                    "/a/b/c/d/node_modules/foo/package.json",
+                    "/a/b/c/d/node_modules/foo/index.ts",
+                    "/a/b/c/d/node_modules/foo/index.tsx",
+                    "/a/b/c/d/node_modules/foo/index.d.ts",
+                    "/a/b/c/node_modules/foo.ts",
+                    "/a/b/c/node_modules/foo.tsx",
+                    "/a/b/c/node_modules/foo.d.ts",
+                    "/a/b/c/node_modules/foo/package.json",
+                    "/a/b/c/node_modules/foo/index.ts",
+                    "/a/b/c/node_modules/foo/index.tsx",
+                    "/a/b/c/node_modules/foo/index.d.ts",
+                ])
+            }
         });
 
         it("load module as file", () => {
-            let containingFile = { name: "/a/b/c/d/e.ts" };
-            let moduleFile = { name: "/a/b/node_modules/foo.d.ts" };
-            let resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(containingFile, moduleFile));
-            assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
-            assert.equal(resolution.resolvedModule.isExternalLibraryImport, true);
+            test(/*hasDirectoryExists*/ false);
+            test(/*hasDirectoryExists*/ true);
+
+            function test(hasDirectoryExists: boolean) {
+                let containingFile = { name: "/a/b/c/d/e.ts" };
+                let moduleFile = { name: "/a/b/node_modules/foo.d.ts" };
+                let resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
+                assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
+                assert.equal(resolution.resolvedModule.isExternalLibraryImport, true);
+            }
         });
 
         it("load module as directory", () => {
-            let containingFile = { name: "/a/node_modules/b/c/node_modules/d/e.ts" };
-            let moduleFile = { name: "/a/node_modules/foo/index.d.ts" };
-            let resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(containingFile, moduleFile));
-            assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
-            assert.equal(resolution.resolvedModule.isExternalLibraryImport, true);
-            assert.deepEqual(resolution.failedLookupLocations, [
-                "/a/node_modules/b/c/node_modules/d/node_modules/foo.ts",
-                "/a/node_modules/b/c/node_modules/d/node_modules/foo.tsx",
-                "/a/node_modules/b/c/node_modules/d/node_modules/foo.d.ts",
-                "/a/node_modules/b/c/node_modules/d/node_modules/foo/package.json",
-                "/a/node_modules/b/c/node_modules/d/node_modules/foo/index.ts",
-                "/a/node_modules/b/c/node_modules/d/node_modules/foo/index.tsx",
-                "/a/node_modules/b/c/node_modules/d/node_modules/foo/index.d.ts",
-                "/a/node_modules/b/c/node_modules/foo.ts",
-                "/a/node_modules/b/c/node_modules/foo.tsx",
-                "/a/node_modules/b/c/node_modules/foo.d.ts",
-                "/a/node_modules/b/c/node_modules/foo/package.json",
-                "/a/node_modules/b/c/node_modules/foo/index.ts",
-                "/a/node_modules/b/c/node_modules/foo/index.tsx",
-                "/a/node_modules/b/c/node_modules/foo/index.d.ts",
-                "/a/node_modules/b/node_modules/foo.ts",
-                "/a/node_modules/b/node_modules/foo.tsx",
-                "/a/node_modules/b/node_modules/foo.d.ts",
-                "/a/node_modules/b/node_modules/foo/package.json",
-                "/a/node_modules/b/node_modules/foo/index.ts",
-                "/a/node_modules/b/node_modules/foo/index.tsx",
-                "/a/node_modules/b/node_modules/foo/index.d.ts",
-                "/a/node_modules/foo.ts",
-                "/a/node_modules/foo.tsx",
-                "/a/node_modules/foo.d.ts",
-                "/a/node_modules/foo/package.json",
-                "/a/node_modules/foo/index.ts",
-                "/a/node_modules/foo/index.tsx"
-            ]);
+            test(/*hasDirectoryExists*/ false);
+            test(/*hasDirectoryExists*/ true);
+
+            function test(hasDirectoryExists: boolean) {
+                let containingFile = { name: "/a/node_modules/b/c/node_modules/d/e.ts" };
+                let moduleFile = { name: "/a/node_modules/foo/index.d.ts" };
+                let resolution = nodeModuleNameResolver("foo", containingFile.name, {}, createModuleResolutionHost(hasDirectoryExists, containingFile, moduleFile));
+                assert.equal(resolution.resolvedModule.resolvedFileName, moduleFile.name);
+                assert.equal(resolution.resolvedModule.isExternalLibraryImport, true);
+                assert.deepEqual(resolution.failedLookupLocations, [
+                    "/a/node_modules/b/c/node_modules/d/node_modules/foo.ts",
+                    "/a/node_modules/b/c/node_modules/d/node_modules/foo.tsx",
+                    "/a/node_modules/b/c/node_modules/d/node_modules/foo.d.ts",
+                    "/a/node_modules/b/c/node_modules/d/node_modules/foo/package.json",
+                    "/a/node_modules/b/c/node_modules/d/node_modules/foo/index.ts",
+                    "/a/node_modules/b/c/node_modules/d/node_modules/foo/index.tsx",
+                    "/a/node_modules/b/c/node_modules/d/node_modules/foo/index.d.ts",
+                    "/a/node_modules/b/c/node_modules/foo.ts",
+                    "/a/node_modules/b/c/node_modules/foo.tsx",
+                    "/a/node_modules/b/c/node_modules/foo.d.ts",
+                    "/a/node_modules/b/c/node_modules/foo/package.json",
+                    "/a/node_modules/b/c/node_modules/foo/index.ts",
+                    "/a/node_modules/b/c/node_modules/foo/index.tsx",
+                    "/a/node_modules/b/c/node_modules/foo/index.d.ts",
+                    "/a/node_modules/b/node_modules/foo.ts",
+                    "/a/node_modules/b/node_modules/foo.tsx",
+                    "/a/node_modules/b/node_modules/foo.d.ts",
+                    "/a/node_modules/b/node_modules/foo/package.json",
+                    "/a/node_modules/b/node_modules/foo/index.ts",
+                    "/a/node_modules/b/node_modules/foo/index.tsx",
+                    "/a/node_modules/b/node_modules/foo/index.d.ts",
+                    "/a/node_modules/foo.ts",
+                    "/a/node_modules/foo.tsx",
+                    "/a/node_modules/foo.d.ts",
+                    "/a/node_modules/foo/package.json",
+                    "/a/node_modules/foo/index.ts",
+                    "/a/node_modules/foo/index.tsx"
+                ]);
+
+            }
         });
     });
 
@@ -400,4 +458,21 @@ import b = require("./moduleB.ts");
             test(files, { module: ts.ModuleKind.CommonJS, forceConsistentCasingInFileNames: true },  "/a/B/c", /* useCaseSensitiveFileNames */ false, ["moduleD.ts"], []);
         })
     });
+
+    function notImplemented(name: string): () => any {
+        return () => assert(`${name} is not implemented and should not be called`);
+    }
+
+    describe("ModuleResolutionHost.directoryExists", () => {
+        it("No 'fileExists' calls if containing directory is missing", () => {
+            const host: ModuleResolutionHost = {
+                readFile: notImplemented("readFile"),
+                fileExists: notImplemented("fileExists"),
+                directoryExists: _ => false
+            };
+
+            const result = resolveModuleName("someName", "/a/b/c/d", { moduleResolution: ModuleResolutionKind.NodeJs }, host);
+            assert(!result.resolvedModule);
+        });
+    });
 }
\ No newline at end of file
diff --git a/tests/cases/unittests/transpile.ts b/tests/cases/unittests/transpile.ts
index 882b4e2094b..513d37673bb 100644
--- a/tests/cases/unittests/transpile.ts
+++ b/tests/cases/unittests/transpile.ts
@@ -134,7 +134,7 @@ var x = 0;`,
 
         it("Sets module name", () => {
             let output =
-                `System.register("NamedModule", [], function(exports_1, __moduleName) {\n    "use strict";\n    var x;\n` +
+                `System.register("NamedModule", [], function(exports_1) {\n    "use strict";\n    var x;\n` +
                 `    return {\n` +
                 `        setters:[],\n` +
                 `        execute: function() {\n` +
@@ -159,7 +159,7 @@ var x = 0;`,
                 `declare function use(a: any);\n` +
                 `use(foo);`
             let output =
-                `System.register(["SomeOtherName"], function(exports_1, __moduleName) {\n` +
+                `System.register(["SomeOtherName"], function(exports_1) {\n` +
                 `    "use strict";\n` +
                 `    var SomeName_1;\n` +
                 `    return {\n` +