diff --git a/lib/tsc.js b/lib/tsc.js
index d11299cf5462f..78c5ec237ce00 100644
--- a/lib/tsc.js
+++ b/lib/tsc.js
@@ -65,7 +65,7 @@ var __generator = (this && this.__generator) || function (thisArg, body) {
 var ts;
 (function (ts) {
     ts.versionMajorMinor = "4.3";
-    ts.version = "4.3.4";
+    ts.version = "4.3.5";
     var NativeCollections;
     (function (NativeCollections) {
         function tryGetNativeMap() {
diff --git a/lib/tsserver.js b/lib/tsserver.js
index 66a3b91b10740..f9cc0bc1e728e 100644
--- a/lib/tsserver.js
+++ b/lib/tsserver.js
@@ -96,7 +96,7 @@ var ts;
     // The following is baselined as a literal template type without intervention
     /** The version of the TypeScript compiler release */
     // eslint-disable-next-line @typescript-eslint/no-inferrable-types
-    ts.version = "4.3.4";
+    ts.version = "4.3.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -123997,10 +123997,9 @@ var ts;
                 getTypeScriptMemberSymbols();
             }
             else if (isRightOfOpenTag) {
-                var tagSymbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
-                ts.Debug.assertEachIsDefined(tagSymbols, "getJsxIntrinsicTagNames() should all be defined");
+                symbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
+                ts.Debug.assertEachIsDefined(symbols, "getJsxIntrinsicTagNames() should all be defined");
                 tryGetGlobalSymbols();
-                symbols = tagSymbols.concat(symbols);
                 completionKind = 1 /* Global */;
                 keywordFilters = 0 /* None */;
             }
@@ -124265,7 +124264,7 @@ var ts;
                 if (!attrsType)
                     return 0 /* Continue */;
                 var completionsType = jsxContainer && typeChecker.getContextualType(jsxContainer.attributes, 4 /* Completions */);
-                symbols = filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties);
+                symbols = ts.concatenate(symbols, filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties));
                 setSortTextToOptionalMember();
                 completionKind = 3 /* MemberLike */;
                 isNewIdentifierLocation = false;
@@ -124316,7 +124315,7 @@ var ts;
                 var scopeNode = getScopeNode(contextToken, adjustedPosition, sourceFile) || sourceFile;
                 isInSnippetScope = isSnippetScope(scopeNode);
                 var symbolMeanings = (isTypeOnly ? 0 /* None */ : 111551 /* Value */) | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */;
-                symbols = typeChecker.getSymbolsInScope(scopeNode, symbolMeanings);
+                symbols = ts.concatenate(symbols, typeChecker.getSymbolsInScope(scopeNode, symbolMeanings));
                 ts.Debug.assertEachIsDefined(symbols, "getSymbolsInScope() should all be defined");
                 for (var _i = 0, symbols_1 = symbols; _i < symbols_1.length; _i++) {
                     var symbol = symbols_1[_i];
@@ -124616,7 +124615,7 @@ var ts;
                 var existingMembers = getPropertiesForCompletion(containerActualType, typeChecker);
                 var existingMemberEscapedNames = new ts.Set();
                 existingMembers.forEach(function (s) { return existingMemberEscapedNames.add(s.escapedName); });
-                symbols = ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); });
+                symbols = ts.concatenate(symbols, ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); }));
                 completionKind = 0 /* ObjectPropertyDeclaration */;
                 isNewIdentifierLocation = true;
                 return 1 /* Success */;
@@ -124698,7 +124697,7 @@ var ts;
                 }
                 if (typeMembers && typeMembers.length > 0) {
                     // Add filtered items to the completion list
-                    symbols = filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers));
+                    symbols = ts.concatenate(symbols, filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers)));
                 }
                 setSortTextToOptionalMember();
                 return 1 /* Success */;
@@ -124733,7 +124732,7 @@ var ts;
                 isNewIdentifierLocation = false;
                 var exports = typeChecker.getExportsAndPropertiesOfModule(moduleSpecifierSymbol);
                 var existing = new ts.Set(namedImportsOrExports.elements.filter(function (n) { return !isCurrentlyEditingNode(n); }).map(function (n) { return (n.propertyName || n.name).escapedText; }));
-                symbols = exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); });
+                symbols = ts.concatenate(symbols, exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); }));
                 return 1 /* Success */;
             }
             /**
@@ -124808,7 +124807,7 @@ var ts;
                             (type === null || type === void 0 ? void 0 : type.symbol) && typeChecker.getPropertiesOfType(typeChecker.getTypeOfSymbolAtLocation(type.symbol, decl)) :
                             type && typeChecker.getPropertiesOfType(type);
                     });
-                    symbols = filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags);
+                    symbols = ts.concatenate(symbols, filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags));
                 }
                 return 1 /* Success */;
             }
diff --git a/lib/tsserverlibrary.js b/lib/tsserverlibrary.js
index bddccf9e0108f..8893292a5bbb2 100644
--- a/lib/tsserverlibrary.js
+++ b/lib/tsserverlibrary.js
@@ -290,7 +290,7 @@ var ts;
     // The following is baselined as a literal template type without intervention
     /** The version of the TypeScript compiler release */
     // eslint-disable-next-line @typescript-eslint/no-inferrable-types
-    ts.version = "4.3.4";
+    ts.version = "4.3.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -124566,10 +124566,9 @@ var ts;
                 getTypeScriptMemberSymbols();
             }
             else if (isRightOfOpenTag) {
-                var tagSymbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
-                ts.Debug.assertEachIsDefined(tagSymbols, "getJsxIntrinsicTagNames() should all be defined");
+                symbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
+                ts.Debug.assertEachIsDefined(symbols, "getJsxIntrinsicTagNames() should all be defined");
                 tryGetGlobalSymbols();
-                symbols = tagSymbols.concat(symbols);
                 completionKind = 1 /* Global */;
                 keywordFilters = 0 /* None */;
             }
@@ -124834,7 +124833,7 @@ var ts;
                 if (!attrsType)
                     return 0 /* Continue */;
                 var completionsType = jsxContainer && typeChecker.getContextualType(jsxContainer.attributes, 4 /* Completions */);
-                symbols = filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties);
+                symbols = ts.concatenate(symbols, filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties));
                 setSortTextToOptionalMember();
                 completionKind = 3 /* MemberLike */;
                 isNewIdentifierLocation = false;
@@ -124885,7 +124884,7 @@ var ts;
                 var scopeNode = getScopeNode(contextToken, adjustedPosition, sourceFile) || sourceFile;
                 isInSnippetScope = isSnippetScope(scopeNode);
                 var symbolMeanings = (isTypeOnly ? 0 /* None */ : 111551 /* Value */) | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */;
-                symbols = typeChecker.getSymbolsInScope(scopeNode, symbolMeanings);
+                symbols = ts.concatenate(symbols, typeChecker.getSymbolsInScope(scopeNode, symbolMeanings));
                 ts.Debug.assertEachIsDefined(symbols, "getSymbolsInScope() should all be defined");
                 for (var _i = 0, symbols_1 = symbols; _i < symbols_1.length; _i++) {
                     var symbol = symbols_1[_i];
@@ -125185,7 +125184,7 @@ var ts;
                 var existingMembers = getPropertiesForCompletion(containerActualType, typeChecker);
                 var existingMemberEscapedNames = new ts.Set();
                 existingMembers.forEach(function (s) { return existingMemberEscapedNames.add(s.escapedName); });
-                symbols = ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); });
+                symbols = ts.concatenate(symbols, ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); }));
                 completionKind = 0 /* ObjectPropertyDeclaration */;
                 isNewIdentifierLocation = true;
                 return 1 /* Success */;
@@ -125267,7 +125266,7 @@ var ts;
                 }
                 if (typeMembers && typeMembers.length > 0) {
                     // Add filtered items to the completion list
-                    symbols = filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers));
+                    symbols = ts.concatenate(symbols, filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers)));
                 }
                 setSortTextToOptionalMember();
                 return 1 /* Success */;
@@ -125302,7 +125301,7 @@ var ts;
                 isNewIdentifierLocation = false;
                 var exports = typeChecker.getExportsAndPropertiesOfModule(moduleSpecifierSymbol);
                 var existing = new ts.Set(namedImportsOrExports.elements.filter(function (n) { return !isCurrentlyEditingNode(n); }).map(function (n) { return (n.propertyName || n.name).escapedText; }));
-                symbols = exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); });
+                symbols = ts.concatenate(symbols, exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); }));
                 return 1 /* Success */;
             }
             /**
@@ -125377,7 +125376,7 @@ var ts;
                             (type === null || type === void 0 ? void 0 : type.symbol) && typeChecker.getPropertiesOfType(typeChecker.getTypeOfSymbolAtLocation(type.symbol, decl)) :
                             type && typeChecker.getPropertiesOfType(type);
                     });
-                    symbols = filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags);
+                    symbols = ts.concatenate(symbols, filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags));
                 }
                 return 1 /* Success */;
             }
diff --git a/lib/typescript.js b/lib/typescript.js
index 59842e00c5ec4..85a70c47d5ccd 100644
--- a/lib/typescript.js
+++ b/lib/typescript.js
@@ -290,7 +290,7 @@ var ts;
     // The following is baselined as a literal template type without intervention
     /** The version of the TypeScript compiler release */
     // eslint-disable-next-line @typescript-eslint/no-inferrable-types
-    ts.version = "4.3.4";
+    ts.version = "4.3.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -124566,10 +124566,9 @@ var ts;
                 getTypeScriptMemberSymbols();
             }
             else if (isRightOfOpenTag) {
-                var tagSymbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
-                ts.Debug.assertEachIsDefined(tagSymbols, "getJsxIntrinsicTagNames() should all be defined");
+                symbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
+                ts.Debug.assertEachIsDefined(symbols, "getJsxIntrinsicTagNames() should all be defined");
                 tryGetGlobalSymbols();
-                symbols = tagSymbols.concat(symbols);
                 completionKind = 1 /* Global */;
                 keywordFilters = 0 /* None */;
             }
@@ -124834,7 +124833,7 @@ var ts;
                 if (!attrsType)
                     return 0 /* Continue */;
                 var completionsType = jsxContainer && typeChecker.getContextualType(jsxContainer.attributes, 4 /* Completions */);
-                symbols = filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties);
+                symbols = ts.concatenate(symbols, filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties));
                 setSortTextToOptionalMember();
                 completionKind = 3 /* MemberLike */;
                 isNewIdentifierLocation = false;
@@ -124885,7 +124884,7 @@ var ts;
                 var scopeNode = getScopeNode(contextToken, adjustedPosition, sourceFile) || sourceFile;
                 isInSnippetScope = isSnippetScope(scopeNode);
                 var symbolMeanings = (isTypeOnly ? 0 /* None */ : 111551 /* Value */) | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */;
-                symbols = typeChecker.getSymbolsInScope(scopeNode, symbolMeanings);
+                symbols = ts.concatenate(symbols, typeChecker.getSymbolsInScope(scopeNode, symbolMeanings));
                 ts.Debug.assertEachIsDefined(symbols, "getSymbolsInScope() should all be defined");
                 for (var _i = 0, symbols_1 = symbols; _i < symbols_1.length; _i++) {
                     var symbol = symbols_1[_i];
@@ -125185,7 +125184,7 @@ var ts;
                 var existingMembers = getPropertiesForCompletion(containerActualType, typeChecker);
                 var existingMemberEscapedNames = new ts.Set();
                 existingMembers.forEach(function (s) { return existingMemberEscapedNames.add(s.escapedName); });
-                symbols = ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); });
+                symbols = ts.concatenate(symbols, ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); }));
                 completionKind = 0 /* ObjectPropertyDeclaration */;
                 isNewIdentifierLocation = true;
                 return 1 /* Success */;
@@ -125267,7 +125266,7 @@ var ts;
                 }
                 if (typeMembers && typeMembers.length > 0) {
                     // Add filtered items to the completion list
-                    symbols = filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers));
+                    symbols = ts.concatenate(symbols, filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers)));
                 }
                 setSortTextToOptionalMember();
                 return 1 /* Success */;
@@ -125302,7 +125301,7 @@ var ts;
                 isNewIdentifierLocation = false;
                 var exports = typeChecker.getExportsAndPropertiesOfModule(moduleSpecifierSymbol);
                 var existing = new ts.Set(namedImportsOrExports.elements.filter(function (n) { return !isCurrentlyEditingNode(n); }).map(function (n) { return (n.propertyName || n.name).escapedText; }));
-                symbols = exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); });
+                symbols = ts.concatenate(symbols, exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); }));
                 return 1 /* Success */;
             }
             /**
@@ -125377,7 +125376,7 @@ var ts;
                             (type === null || type === void 0 ? void 0 : type.symbol) && typeChecker.getPropertiesOfType(typeChecker.getTypeOfSymbolAtLocation(type.symbol, decl)) :
                             type && typeChecker.getPropertiesOfType(type);
                     });
-                    symbols = filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags);
+                    symbols = ts.concatenate(symbols, filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags));
                 }
                 return 1 /* Success */;
             }
diff --git a/lib/typescriptServices.js b/lib/typescriptServices.js
index cf1c925cc6e5e..668927cd55a1f 100644
--- a/lib/typescriptServices.js
+++ b/lib/typescriptServices.js
@@ -290,7 +290,7 @@ var ts;
     // The following is baselined as a literal template type without intervention
     /** The version of the TypeScript compiler release */
     // eslint-disable-next-line @typescript-eslint/no-inferrable-types
-    ts.version = "4.3.4";
+    ts.version = "4.3.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -124566,10 +124566,9 @@ var ts;
                 getTypeScriptMemberSymbols();
             }
             else if (isRightOfOpenTag) {
-                var tagSymbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
-                ts.Debug.assertEachIsDefined(tagSymbols, "getJsxIntrinsicTagNames() should all be defined");
+                symbols = typeChecker.getJsxIntrinsicTagNamesAt(location);
+                ts.Debug.assertEachIsDefined(symbols, "getJsxIntrinsicTagNames() should all be defined");
                 tryGetGlobalSymbols();
-                symbols = tagSymbols.concat(symbols);
                 completionKind = 1 /* Global */;
                 keywordFilters = 0 /* None */;
             }
@@ -124834,7 +124833,7 @@ var ts;
                 if (!attrsType)
                     return 0 /* Continue */;
                 var completionsType = jsxContainer && typeChecker.getContextualType(jsxContainer.attributes, 4 /* Completions */);
-                symbols = filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties);
+                symbols = ts.concatenate(symbols, filterJsxAttributes(getPropertiesForObjectExpression(attrsType, completionsType, jsxContainer.attributes, typeChecker), jsxContainer.attributes.properties));
                 setSortTextToOptionalMember();
                 completionKind = 3 /* MemberLike */;
                 isNewIdentifierLocation = false;
@@ -124885,7 +124884,7 @@ var ts;
                 var scopeNode = getScopeNode(contextToken, adjustedPosition, sourceFile) || sourceFile;
                 isInSnippetScope = isSnippetScope(scopeNode);
                 var symbolMeanings = (isTypeOnly ? 0 /* None */ : 111551 /* Value */) | 788968 /* Type */ | 1920 /* Namespace */ | 2097152 /* Alias */;
-                symbols = typeChecker.getSymbolsInScope(scopeNode, symbolMeanings);
+                symbols = ts.concatenate(symbols, typeChecker.getSymbolsInScope(scopeNode, symbolMeanings));
                 ts.Debug.assertEachIsDefined(symbols, "getSymbolsInScope() should all be defined");
                 for (var _i = 0, symbols_1 = symbols; _i < symbols_1.length; _i++) {
                     var symbol = symbols_1[_i];
@@ -125185,7 +125184,7 @@ var ts;
                 var existingMembers = getPropertiesForCompletion(containerActualType, typeChecker);
                 var existingMemberEscapedNames = new ts.Set();
                 existingMembers.forEach(function (s) { return existingMemberEscapedNames.add(s.escapedName); });
-                symbols = ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); });
+                symbols = ts.concatenate(symbols, ts.filter(members, function (s) { return !existingMemberEscapedNames.has(s.escapedName); }));
                 completionKind = 0 /* ObjectPropertyDeclaration */;
                 isNewIdentifierLocation = true;
                 return 1 /* Success */;
@@ -125267,7 +125266,7 @@ var ts;
                 }
                 if (typeMembers && typeMembers.length > 0) {
                     // Add filtered items to the completion list
-                    symbols = filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers));
+                    symbols = ts.concatenate(symbols, filterObjectMembersList(typeMembers, ts.Debug.checkDefined(existingMembers)));
                 }
                 setSortTextToOptionalMember();
                 return 1 /* Success */;
@@ -125302,7 +125301,7 @@ var ts;
                 isNewIdentifierLocation = false;
                 var exports = typeChecker.getExportsAndPropertiesOfModule(moduleSpecifierSymbol);
                 var existing = new ts.Set(namedImportsOrExports.elements.filter(function (n) { return !isCurrentlyEditingNode(n); }).map(function (n) { return (n.propertyName || n.name).escapedText; }));
-                symbols = exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); });
+                symbols = ts.concatenate(symbols, exports.filter(function (e) { return e.escapedName !== "default" /* Default */ && !existing.has(e.escapedName); }));
                 return 1 /* Success */;
             }
             /**
@@ -125377,7 +125376,7 @@ var ts;
                             (type === null || type === void 0 ? void 0 : type.symbol) && typeChecker.getPropertiesOfType(typeChecker.getTypeOfSymbolAtLocation(type.symbol, decl)) :
                             type && typeChecker.getPropertiesOfType(type);
                     });
-                    symbols = filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags);
+                    symbols = ts.concatenate(symbols, filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags));
                 }
                 return 1 /* Success */;
             }
diff --git a/lib/typingsInstaller.js b/lib/typingsInstaller.js
index 5aa1daffbbe5c..14d9f58e34279 100644
--- a/lib/typingsInstaller.js
+++ b/lib/typingsInstaller.js
@@ -85,7 +85,7 @@ var ts;
     // The following is baselined as a literal template type without intervention
     /** The version of the TypeScript compiler release */
     // eslint-disable-next-line @typescript-eslint/no-inferrable-types
-    ts.version = "4.3.4";
+    ts.version = "4.3.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
diff --git a/package.json b/package.json
index a5eeae7d13e0b..c86cefa545dce 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "typescript",
     "author": "Microsoft Corp.",
     "homepage": "https://www.typescriptlang.org/",
-    "version": "4.3.4",
+    "version": "4.3.5",
     "license": "Apache-2.0",
     "description": "TypeScript is a language for application scale JavaScript development",
     "keywords": [
diff --git a/src/compiler/corePublic.ts b/src/compiler/corePublic.ts
index ed8388e45b195..793e1fa67878a 100644
--- a/src/compiler/corePublic.ts
+++ b/src/compiler/corePublic.ts
@@ -5,7 +5,7 @@ namespace ts {
     // The following is baselined as a literal template type without intervention
     /** The version of the TypeScript compiler release */
     // eslint-disable-next-line @typescript-eslint/no-inferrable-types
-    export const version = "4.3.4" as string;
+    export const version = "4.3.5" as string;
 
     /**
      * Type of objects whose values are all of the same type.