diff --git a/lib/tsc.js b/lib/tsc.js
index e843aa1776411..e144201b5a7cc 100644
--- a/lib/tsc.js
+++ b/lib/tsc.js
@@ -69,7 +69,7 @@ var __generator = (this && this.__generator) || function (thisArg, body) {
 var ts;
 (function (ts) {
     ts.versionMajorMinor = "4.5";
-    ts.version = "4.5.4";
+    ts.version = "4.5.5";
     var NativeCollections;
     (function (NativeCollections) {
         function tryGetNativeMap() {
@@ -12247,7 +12247,7 @@ var ts;
     }
     ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
     function getExternalModuleRequireArgument(node) {
-        return isRequireVariableDeclaration(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
+        return isVariableDeclarationInitializedToBareOrAccessedRequire(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
     }
     ts.getExternalModuleRequireArgument = getExternalModuleRequireArgument;
     function isInternalModuleImportEqualsDeclaration(node) {
@@ -12301,17 +12301,26 @@ var ts;
         return !requireStringLiteralLikeArgument || ts.isStringLiteralLike(arg);
     }
     ts.isRequireCall = isRequireCall;
-    function isRequireVariableDeclaration(node) {
+    function isVariableDeclarationInitializedToRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, false);
+    }
+    ts.isVariableDeclarationInitializedToRequire = isVariableDeclarationInitializedToRequire;
+    function isVariableDeclarationInitializedToBareOrAccessedRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, true);
+    }
+    ts.isVariableDeclarationInitializedToBareOrAccessedRequire = isVariableDeclarationInitializedToBareOrAccessedRequire;
+    function isVariableDeclarationInitializedWithRequireHelper(node, allowAccessedRequire) {
         if (node.kind === 202) {
             node = node.parent.parent;
         }
-        return ts.isVariableDeclaration(node) && !!node.initializer && isRequireCall(getLeftmostAccessExpression(node.initializer), true);
+        return ts.isVariableDeclaration(node) &&
+            !!node.initializer &&
+            isRequireCall(allowAccessedRequire ? getLeftmostAccessExpression(node.initializer) : node.initializer, true);
     }
-    ts.isRequireVariableDeclaration = isRequireVariableDeclaration;
     function isRequireVariableStatement(node) {
         return ts.isVariableStatement(node)
             && node.declarationList.declarations.length > 0
-            && ts.every(node.declarationList.declarations, function (decl) { return isRequireVariableDeclaration(decl); });
+            && ts.every(node.declarationList.declarations, function (decl) { return isVariableDeclarationInitializedToRequire(decl); });
     }
     ts.isRequireVariableStatement = isRequireVariableStatement;
     function isSingleOrDoubleQuote(charCode) {
@@ -37770,7 +37779,7 @@ var ts;
                 checkStrictModeEvalOrArguments(node, node.name);
             }
             if (!ts.isBindingPattern(node.name)) {
-                if (ts.isInJSFile(node) && ts.isRequireVariableDeclaration(node) && !ts.getJSDocTypeTag(node)) {
+                if (ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node) && !ts.getJSDocTypeTag(node)) {
                     declareSymbolAndAddToSymbolTable(node, 2097152, 2097152);
                 }
                 else if (ts.isBlockOrCatchScoped(node)) {
@@ -40045,7 +40054,7 @@ var ts;
                     && isAliasableOrJsExpression(node.parent.right)
                 || node.kind === 295
                 || node.kind === 294 && isAliasableOrJsExpression(node.initializer)
-                || ts.isRequireVariableDeclaration(node);
+                || ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node);
         }
         function isAliasableOrJsExpression(e) {
             return ts.isAliasableExpression(e) || ts.isFunctionExpression(e) && isJSConstructor(e);
@@ -40901,7 +40910,7 @@ var ts;
                         if (!sigs || !sigs.length) {
                             sigs = getSignaturesOfStructuredType(type, 1);
                         }
-                        if ((sigs && sigs.length) || getPropertyOfType(type, "default")) {
+                        if ((sigs && sigs.length) || getPropertyOfType(type, "default", true)) {
                             var moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol, reference);
                             return cloneTypeAsModuleType(symbol, moduleType, referenceParent);
                         }
@@ -67235,7 +67244,7 @@ var ts;
                 return;
             }
             var symbol = getSymbolOfNode(node);
-            if (symbol.flags & 2097152 && ts.isRequireVariableDeclaration(node)) {
+            if (symbol.flags & 2097152 && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node)) {
                 checkAliasSymbol(node);
                 return;
             }
diff --git a/lib/tsserver.js b/lib/tsserver.js
index 028346841ea0d..6499e34af0dde 100644
--- a/lib/tsserver.js
+++ b/lib/tsserver.js
@@ -100,7 +100,7 @@ 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 = "4.5.4";
+    ts.version = "4.5.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -15839,7 +15839,7 @@ var ts;
     }
     ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
     function getExternalModuleRequireArgument(node) {
-        return isRequireVariableDeclaration(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
+        return isVariableDeclarationInitializedToBareOrAccessedRequire(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
     }
     ts.getExternalModuleRequireArgument = getExternalModuleRequireArgument;
     function isInternalModuleImportEqualsDeclaration(node) {
@@ -15897,17 +15897,29 @@ var ts;
      * Returns true if the node is a VariableDeclaration initialized to a require call (see `isRequireCall`).
      * This function does not test if the node is in a JavaScript file or not.
      */
-    function isRequireVariableDeclaration(node) {
+    function isVariableDeclarationInitializedToRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ false);
+    }
+    ts.isVariableDeclarationInitializedToRequire = isVariableDeclarationInitializedToRequire;
+    /**
+     * Like {@link isVariableDeclarationInitializedToRequire} but allows things like `require("...").foo.bar` or `require("...")["baz"]`.
+     */
+    function isVariableDeclarationInitializedToBareOrAccessedRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ true);
+    }
+    ts.isVariableDeclarationInitializedToBareOrAccessedRequire = isVariableDeclarationInitializedToBareOrAccessedRequire;
+    function isVariableDeclarationInitializedWithRequireHelper(node, allowAccessedRequire) {
         if (node.kind === 202 /* BindingElement */) {
             node = node.parent.parent;
         }
-        return ts.isVariableDeclaration(node) && !!node.initializer && isRequireCall(getLeftmostAccessExpression(node.initializer), /*requireStringLiteralLikeArgument*/ true);
+        return ts.isVariableDeclaration(node) &&
+            !!node.initializer &&
+            isRequireCall(allowAccessedRequire ? getLeftmostAccessExpression(node.initializer) : node.initializer, /*requireStringLiteralLikeArgument*/ true);
     }
-    ts.isRequireVariableDeclaration = isRequireVariableDeclaration;
     function isRequireVariableStatement(node) {
         return ts.isVariableStatement(node)
             && node.declarationList.declarations.length > 0
-            && ts.every(node.declarationList.declarations, function (decl) { return isRequireVariableDeclaration(decl); });
+            && ts.every(node.declarationList.declarations, function (decl) { return isVariableDeclarationInitializedToRequire(decl); });
     }
     ts.isRequireVariableStatement = isRequireVariableStatement;
     function isSingleOrDoubleQuote(charCode) {
@@ -46064,7 +46076,7 @@ var ts;
                 checkStrictModeEvalOrArguments(node, node.name);
             }
             if (!ts.isBindingPattern(node.name)) {
-                if (ts.isInJSFile(node) && ts.isRequireVariableDeclaration(node) && !ts.getJSDocTypeTag(node)) {
+                if (ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node) && !ts.getJSDocTypeTag(node)) {
                     declareSymbolAndAddToSymbolTable(node, 2097152 /* Alias */, 2097152 /* AliasExcludes */);
                 }
                 else if (ts.isBlockOrCatchScoped(node)) {
@@ -48843,7 +48855,7 @@ var ts;
                     && isAliasableOrJsExpression(node.parent.right)
                 || node.kind === 295 /* ShorthandPropertyAssignment */
                 || node.kind === 294 /* PropertyAssignment */ && isAliasableOrJsExpression(node.initializer)
-                || ts.isRequireVariableDeclaration(node);
+                || ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node);
         }
         function isAliasableOrJsExpression(e) {
             return ts.isAliasableExpression(e) || ts.isFunctionExpression(e) && isJSConstructor(e);
@@ -49814,7 +49826,7 @@ var ts;
                         if (!sigs || !sigs.length) {
                             sigs = getSignaturesOfStructuredType(type, 1 /* Construct */);
                         }
-                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */)) {
+                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */, /*skipObjectFunctionPropertyAugment*/ true)) {
                             var moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol, reference);
                             return cloneTypeAsModuleType(symbol, moduleType, referenceParent);
                         }
@@ -80246,7 +80258,7 @@ var ts;
             }
             // For a commonjs `const x = require`, validate the alias and exit
             var symbol = getSymbolOfNode(node);
-            if (symbol.flags & 2097152 /* Alias */ && ts.isRequireVariableDeclaration(node)) {
+            if (symbol.flags & 2097152 /* Alias */ && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node)) {
                 checkAliasSymbol(node);
                 return;
             }
@@ -123955,7 +123967,7 @@ var ts;
                         isWhiteSpaceOnlyJsxText(child);
                     if (lookInPreviousChild) {
                         // actual start of the node is past the position - previous token should be at the end of previous child
-                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile);
+                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile, n.kind);
                         return candidate_1 && findRightmostToken(candidate_1, sourceFile);
                     }
                     else {
@@ -123969,7 +123981,7 @@ var ts;
             // the only known case is when position is at the end of the file.
             // Try to find the rightmost token in the file without filtering.
             // Namely we are skipping the check: 'position < node.end'
-            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
             return candidate && findRightmostToken(candidate, sourceFile);
         }
     }
@@ -123985,17 +123997,19 @@ var ts;
         if (children.length === 0) {
             return n;
         }
-        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
         return candidate && findRightmostToken(candidate, sourceFile);
     }
     /**
      * Finds the rightmost child to the left of `children[exclusiveStartPosition]` which is a non-all-whitespace token or has constituent tokens.
      */
-    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile) {
+    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile, parentKind) {
         for (var i = exclusiveStartPosition - 1; i >= 0; i--) {
             var child = children[i];
             if (isWhiteSpaceOnlyJsxText(child)) {
-                ts.Debug.assert(i > 0, "`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                if (i === 0 && (parentKind === 11 /* JsxText */ || parentKind === 278 /* JsxSelfClosingElement */)) {
+                    ts.Debug.fail("`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                }
             }
             else if (nodeHasTokens(children[i], sourceFile)) {
                 return children[i];
@@ -128412,7 +128426,7 @@ var ts;
             return (location === null || location === void 0 ? void 0 : location.kind) === 79 /* Identifier */ ? ts.createTextSpanFromNode(location) : undefined;
         }
         function completionInfoFromData(sourceFile, host, program, compilerOptions, log, completionData, preferences) {
-            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
+            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, isRightOfOpenTag = completionData.isRightOfOpenTag, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
             // Verify if the file is JSX language variant
             if (ts.getLanguageVariant(sourceFile.scriptKind) === 1 /* JSX */) {
                 var completionInfo = getJsxClosingTagCompletion(location, sourceFile);
@@ -128423,7 +128437,7 @@ var ts;
             var entries = [];
             if (isUncheckedFile(sourceFile, compilerOptions)) {
                 var uniqueNames = getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
                 getJSCompletionEntries(sourceFile, location.pos, uniqueNames, ts.getEmitScriptTarget(compilerOptions), entries); // TODO: GH#18217
             }
             else {
@@ -128431,7 +128445,7 @@ var ts;
                     return undefined;
                 }
                 getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
             }
             if (keywordFilters !== 0 /* None */) {
                 var entryNames = new ts.Set(entries.map(function (e) { return e.name; }));
@@ -128537,7 +128551,7 @@ var ts;
         function createCompletionEntryForLiteral(sourceFile, preferences, literal) {
             return { name: completionNameForLiteral(sourceFile, preferences, literal), kind: "string" /* string */, kindModifiers: "" /* none */, sortText: SortText.LocationPriority };
         }
-        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind) {
+        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a, _b;
             var insertText;
             var replacementSpan = ts.getReplacementSpanForContextToken(replacementToken);
@@ -128608,24 +128622,7 @@ var ts;
                     source = CompletionSource.ClassMemberSnippet;
                 }
             }
-            // Before offering up a JSX attribute snippet, ensure that we aren't potentially completing
-            // a tag name; this may appear as an attribute after the "<" when the tag has not yet been
-            // closed, as in:
-            //
-            //     return <>
-            //         foo <butto|
-            //     </>
-            //
-            // We can detect this case by checking if both:
-            //
-            //     1. The location is "<", so we are completing immediately after it.
-            //     2. The "<" has the same position as its parent, so is not a binary expression.
-            var kind = ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location);
-            if (kind === "JSX attribute" /* jsxAttribute */
-                && (location.kind !== 29 /* LessThanToken */ || location.pos !== location.parent.pos)
-                && preferences.includeCompletionsWithSnippetText
-                && preferences.jsxAttributeCompletionStyle
-                && preferences.jsxAttributeCompletionStyle !== "none") {
+            if (isJsxIdentifierExpected && !isRightOfOpenTag && preferences.includeCompletionsWithSnippetText && preferences.jsxAttributeCompletionStyle && preferences.jsxAttributeCompletionStyle !== "none") {
                 var useBraces_1 = preferences.jsxAttributeCompletionStyle === "braces";
                 var type = typeChecker.getTypeOfSymbolAtLocation(symbol, location);
                 // If is boolean like or undefined, don't return a snippet we want just to return the completion.
@@ -128663,7 +128660,7 @@ var ts;
             // entries (like JavaScript identifier entries).
             return {
                 name: name,
-                kind: kind,
+                kind: ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location),
                 kindModifiers: ts.SymbolDisplay.getSymbolModifiers(typeChecker, symbol),
                 sortText: sortText,
                 source: source,
@@ -128938,7 +128935,7 @@ var ts;
                 return CompletionSource.ThisProperty;
             }
         }
-        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap) {
+        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a;
             var start = ts.timestamp();
             var variableDeclaration = getVariableDeclaration(location);
@@ -128959,7 +128956,7 @@ var ts;
                 var name = info.name, needsConvertPropertyAccess = info.needsConvertPropertyAccess;
                 var sortTextId = (_a = symbolToSortTextIdMap === null || symbolToSortTextIdMap === void 0 ? void 0 : symbolToSortTextIdMap[ts.getSymbolId(symbol)]) !== null && _a !== void 0 ? _a : 11 /* LocationPriority */;
                 var sortText = (isDeprecated(symbol, typeChecker) ? 8 /* DeprecatedOffset */ + sortTextId : sortTextId).toString();
-                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind);
+                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind, isJsxIdentifierExpected, isRightOfOpenTag);
                 if (!entry) {
                     continue;
                 }
@@ -129553,6 +129550,7 @@ var ts;
                 symbolToSortTextIdMap: symbolToSortTextIdMap,
                 isTypeOnlyLocation: isTypeOnlyLocation,
                 isJsxIdentifierExpected: isJsxIdentifierExpected,
+                isRightOfOpenTag: isRightOfOpenTag,
                 importCompletionNode: importCompletionNode,
                 hasUnresolvedAutoImports: hasUnresolvedAutoImports,
             };
@@ -132484,7 +132482,7 @@ var ts;
                     ts.Debug.assert(parent.name === node);
                     return true;
                 case 202 /* BindingElement */:
-                    return ts.isInJSFile(node) && ts.isRequireVariableDeclaration(parent);
+                    return ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(parent);
                 default:
                     return false;
             }
@@ -133884,7 +133882,7 @@ var ts;
                 // Use the parent symbol if the location is commonjs require syntax on javascript files only.
                 if (ts.isInJSFile(referenceLocation)
                     && referenceLocation.parent.kind === 202 /* BindingElement */
-                    && ts.isRequireVariableDeclaration(referenceLocation.parent)) {
+                    && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(referenceLocation.parent)) {
                     referenceSymbol = referenceLocation.parent.symbol;
                     // The parent will not have a symbol if it's an ObjectBindingPattern (when destructuring is used).  In
                     // this case, just skip it, since the bound identifiers are not an alias of the import.
@@ -135591,7 +135589,7 @@ var ts;
                     return declaration.parent.kind === 268 /* NamedImports */;
                 case 202 /* BindingElement */:
                 case 253 /* VariableDeclaration */:
-                    return ts.isInJSFile(declaration) && ts.isRequireVariableDeclaration(declaration);
+                    return ts.isInJSFile(declaration) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(declaration);
                 default:
                     return false;
             }
@@ -136874,6 +136872,9 @@ var ts;
         // We use 1 NavNode to represent 'A.B.C', but there are multiple source nodes.
         // Only merge module nodes that have the same chain. Don't merge 'A.B.C' with 'A'!
         function areSameModule(a, b) {
+            if (!a.body || !b.body) {
+                return a.body === b.body;
+            }
             return a.body.kind === b.body.kind && (a.body.kind !== 260 /* ModuleDeclaration */ || areSameModule(a.body, b.body));
         }
         /** Merge source into target. Source should be thrown away after this is called. */
@@ -148623,7 +148624,7 @@ var ts;
             var importKind = getImportKind(importingFile, exportKind, compilerOptions);
             return ts.mapDefined(importingFile.imports, function (moduleSpecifier) {
                 var i = ts.importFromModuleSpecifier(moduleSpecifier);
-                if (ts.isRequireVariableDeclaration(i.parent)) {
+                if (ts.isVariableDeclarationInitializedToRequire(i.parent)) {
                     return checker.resolveExternalModuleName(moduleSpecifier) === moduleSymbol ? { declaration: i.parent, importKind: importKind, symbol: symbol, targetFlags: targetFlags } : undefined;
                 }
                 if (i.kind === 265 /* ImportDeclaration */ || i.kind === 264 /* ImportEqualsDeclaration */) {
@@ -156683,11 +156684,12 @@ var ts;
             var result = [];
             return visitor(selection) ? undefined : result;
             function visitor(node) {
+                var _a;
                 if (ts.isTypeReferenceNode(node)) {
                     if (ts.isIdentifier(node.typeName)) {
                         var symbol = checker.resolveName(node.typeName.text, node.typeName, 262144 /* TypeParameter */, /* excludeGlobals */ true);
-                        if (symbol === null || symbol === void 0 ? void 0 : symbol.declarations) {
-                            var declaration = ts.cast(ts.first(symbol.declarations), ts.isTypeParameterDeclaration);
+                        var declaration = ts.tryCast((_a = symbol === null || symbol === void 0 ? void 0 : symbol.declarations) === null || _a === void 0 ? void 0 : _a[0], ts.isTypeParameterDeclaration);
+                        if (declaration) {
                             if (rangeContainsSkipTrivia(statement, declaration, file) && !rangeContainsSkipTrivia(selection, declaration, file)) {
                                 ts.pushIfUnique(result, declaration);
                             }
diff --git a/lib/tsserverlibrary.js b/lib/tsserverlibrary.js
index 1db4e4a0467ca..160c6c94d9319 100644
--- a/lib/tsserverlibrary.js
+++ b/lib/tsserverlibrary.js
@@ -294,7 +294,7 @@ 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 = "4.5.4";
+    ts.version = "4.5.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -16033,7 +16033,7 @@ var ts;
     }
     ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
     function getExternalModuleRequireArgument(node) {
-        return isRequireVariableDeclaration(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
+        return isVariableDeclarationInitializedToBareOrAccessedRequire(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
     }
     ts.getExternalModuleRequireArgument = getExternalModuleRequireArgument;
     function isInternalModuleImportEqualsDeclaration(node) {
@@ -16091,17 +16091,29 @@ var ts;
      * Returns true if the node is a VariableDeclaration initialized to a require call (see `isRequireCall`).
      * This function does not test if the node is in a JavaScript file or not.
      */
-    function isRequireVariableDeclaration(node) {
+    function isVariableDeclarationInitializedToRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ false);
+    }
+    ts.isVariableDeclarationInitializedToRequire = isVariableDeclarationInitializedToRequire;
+    /**
+     * Like {@link isVariableDeclarationInitializedToRequire} but allows things like `require("...").foo.bar` or `require("...")["baz"]`.
+     */
+    function isVariableDeclarationInitializedToBareOrAccessedRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ true);
+    }
+    ts.isVariableDeclarationInitializedToBareOrAccessedRequire = isVariableDeclarationInitializedToBareOrAccessedRequire;
+    function isVariableDeclarationInitializedWithRequireHelper(node, allowAccessedRequire) {
         if (node.kind === 202 /* BindingElement */) {
             node = node.parent.parent;
         }
-        return ts.isVariableDeclaration(node) && !!node.initializer && isRequireCall(getLeftmostAccessExpression(node.initializer), /*requireStringLiteralLikeArgument*/ true);
+        return ts.isVariableDeclaration(node) &&
+            !!node.initializer &&
+            isRequireCall(allowAccessedRequire ? getLeftmostAccessExpression(node.initializer) : node.initializer, /*requireStringLiteralLikeArgument*/ true);
     }
-    ts.isRequireVariableDeclaration = isRequireVariableDeclaration;
     function isRequireVariableStatement(node) {
         return ts.isVariableStatement(node)
             && node.declarationList.declarations.length > 0
-            && ts.every(node.declarationList.declarations, function (decl) { return isRequireVariableDeclaration(decl); });
+            && ts.every(node.declarationList.declarations, function (decl) { return isVariableDeclarationInitializedToRequire(decl); });
     }
     ts.isRequireVariableStatement = isRequireVariableStatement;
     function isSingleOrDoubleQuote(charCode) {
@@ -46258,7 +46270,7 @@ var ts;
                 checkStrictModeEvalOrArguments(node, node.name);
             }
             if (!ts.isBindingPattern(node.name)) {
-                if (ts.isInJSFile(node) && ts.isRequireVariableDeclaration(node) && !ts.getJSDocTypeTag(node)) {
+                if (ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node) && !ts.getJSDocTypeTag(node)) {
                     declareSymbolAndAddToSymbolTable(node, 2097152 /* Alias */, 2097152 /* AliasExcludes */);
                 }
                 else if (ts.isBlockOrCatchScoped(node)) {
@@ -49037,7 +49049,7 @@ var ts;
                     && isAliasableOrJsExpression(node.parent.right)
                 || node.kind === 295 /* ShorthandPropertyAssignment */
                 || node.kind === 294 /* PropertyAssignment */ && isAliasableOrJsExpression(node.initializer)
-                || ts.isRequireVariableDeclaration(node);
+                || ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node);
         }
         function isAliasableOrJsExpression(e) {
             return ts.isAliasableExpression(e) || ts.isFunctionExpression(e) && isJSConstructor(e);
@@ -50008,7 +50020,7 @@ var ts;
                         if (!sigs || !sigs.length) {
                             sigs = getSignaturesOfStructuredType(type, 1 /* Construct */);
                         }
-                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */)) {
+                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */, /*skipObjectFunctionPropertyAugment*/ true)) {
                             var moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol, reference);
                             return cloneTypeAsModuleType(symbol, moduleType, referenceParent);
                         }
@@ -80440,7 +80452,7 @@ var ts;
             }
             // For a commonjs `const x = require`, validate the alias and exit
             var symbol = getSymbolOfNode(node);
-            if (symbol.flags & 2097152 /* Alias */ && ts.isRequireVariableDeclaration(node)) {
+            if (symbol.flags & 2097152 /* Alias */ && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node)) {
                 checkAliasSymbol(node);
                 return;
             }
@@ -124537,7 +124549,7 @@ var ts;
                         isWhiteSpaceOnlyJsxText(child);
                     if (lookInPreviousChild) {
                         // actual start of the node is past the position - previous token should be at the end of previous child
-                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile);
+                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile, n.kind);
                         return candidate_1 && findRightmostToken(candidate_1, sourceFile);
                     }
                     else {
@@ -124551,7 +124563,7 @@ var ts;
             // the only known case is when position is at the end of the file.
             // Try to find the rightmost token in the file without filtering.
             // Namely we are skipping the check: 'position < node.end'
-            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
             return candidate && findRightmostToken(candidate, sourceFile);
         }
     }
@@ -124567,17 +124579,19 @@ var ts;
         if (children.length === 0) {
             return n;
         }
-        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
         return candidate && findRightmostToken(candidate, sourceFile);
     }
     /**
      * Finds the rightmost child to the left of `children[exclusiveStartPosition]` which is a non-all-whitespace token or has constituent tokens.
      */
-    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile) {
+    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile, parentKind) {
         for (var i = exclusiveStartPosition - 1; i >= 0; i--) {
             var child = children[i];
             if (isWhiteSpaceOnlyJsxText(child)) {
-                ts.Debug.assert(i > 0, "`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                if (i === 0 && (parentKind === 11 /* JsxText */ || parentKind === 278 /* JsxSelfClosingElement */)) {
+                    ts.Debug.fail("`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                }
             }
             else if (nodeHasTokens(children[i], sourceFile)) {
                 return children[i];
@@ -128994,7 +129008,7 @@ var ts;
             return (location === null || location === void 0 ? void 0 : location.kind) === 79 /* Identifier */ ? ts.createTextSpanFromNode(location) : undefined;
         }
         function completionInfoFromData(sourceFile, host, program, compilerOptions, log, completionData, preferences) {
-            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
+            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, isRightOfOpenTag = completionData.isRightOfOpenTag, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
             // Verify if the file is JSX language variant
             if (ts.getLanguageVariant(sourceFile.scriptKind) === 1 /* JSX */) {
                 var completionInfo = getJsxClosingTagCompletion(location, sourceFile);
@@ -129005,7 +129019,7 @@ var ts;
             var entries = [];
             if (isUncheckedFile(sourceFile, compilerOptions)) {
                 var uniqueNames = getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
                 getJSCompletionEntries(sourceFile, location.pos, uniqueNames, ts.getEmitScriptTarget(compilerOptions), entries); // TODO: GH#18217
             }
             else {
@@ -129013,7 +129027,7 @@ var ts;
                     return undefined;
                 }
                 getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
             }
             if (keywordFilters !== 0 /* None */) {
                 var entryNames = new ts.Set(entries.map(function (e) { return e.name; }));
@@ -129119,7 +129133,7 @@ var ts;
         function createCompletionEntryForLiteral(sourceFile, preferences, literal) {
             return { name: completionNameForLiteral(sourceFile, preferences, literal), kind: "string" /* string */, kindModifiers: "" /* none */, sortText: SortText.LocationPriority };
         }
-        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind) {
+        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a, _b;
             var insertText;
             var replacementSpan = ts.getReplacementSpanForContextToken(replacementToken);
@@ -129190,24 +129204,7 @@ var ts;
                     source = CompletionSource.ClassMemberSnippet;
                 }
             }
-            // Before offering up a JSX attribute snippet, ensure that we aren't potentially completing
-            // a tag name; this may appear as an attribute after the "<" when the tag has not yet been
-            // closed, as in:
-            //
-            //     return <>
-            //         foo <butto|
-            //     </>
-            //
-            // We can detect this case by checking if both:
-            //
-            //     1. The location is "<", so we are completing immediately after it.
-            //     2. The "<" has the same position as its parent, so is not a binary expression.
-            var kind = ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location);
-            if (kind === "JSX attribute" /* jsxAttribute */
-                && (location.kind !== 29 /* LessThanToken */ || location.pos !== location.parent.pos)
-                && preferences.includeCompletionsWithSnippetText
-                && preferences.jsxAttributeCompletionStyle
-                && preferences.jsxAttributeCompletionStyle !== "none") {
+            if (isJsxIdentifierExpected && !isRightOfOpenTag && preferences.includeCompletionsWithSnippetText && preferences.jsxAttributeCompletionStyle && preferences.jsxAttributeCompletionStyle !== "none") {
                 var useBraces_1 = preferences.jsxAttributeCompletionStyle === "braces";
                 var type = typeChecker.getTypeOfSymbolAtLocation(symbol, location);
                 // If is boolean like or undefined, don't return a snippet we want just to return the completion.
@@ -129245,7 +129242,7 @@ var ts;
             // entries (like JavaScript identifier entries).
             return {
                 name: name,
-                kind: kind,
+                kind: ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location),
                 kindModifiers: ts.SymbolDisplay.getSymbolModifiers(typeChecker, symbol),
                 sortText: sortText,
                 source: source,
@@ -129520,7 +129517,7 @@ var ts;
                 return CompletionSource.ThisProperty;
             }
         }
-        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap) {
+        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a;
             var start = ts.timestamp();
             var variableDeclaration = getVariableDeclaration(location);
@@ -129541,7 +129538,7 @@ var ts;
                 var name = info.name, needsConvertPropertyAccess = info.needsConvertPropertyAccess;
                 var sortTextId = (_a = symbolToSortTextIdMap === null || symbolToSortTextIdMap === void 0 ? void 0 : symbolToSortTextIdMap[ts.getSymbolId(symbol)]) !== null && _a !== void 0 ? _a : 11 /* LocationPriority */;
                 var sortText = (isDeprecated(symbol, typeChecker) ? 8 /* DeprecatedOffset */ + sortTextId : sortTextId).toString();
-                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind);
+                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind, isJsxIdentifierExpected, isRightOfOpenTag);
                 if (!entry) {
                     continue;
                 }
@@ -130135,6 +130132,7 @@ var ts;
                 symbolToSortTextIdMap: symbolToSortTextIdMap,
                 isTypeOnlyLocation: isTypeOnlyLocation,
                 isJsxIdentifierExpected: isJsxIdentifierExpected,
+                isRightOfOpenTag: isRightOfOpenTag,
                 importCompletionNode: importCompletionNode,
                 hasUnresolvedAutoImports: hasUnresolvedAutoImports,
             };
@@ -133066,7 +133064,7 @@ var ts;
                     ts.Debug.assert(parent.name === node);
                     return true;
                 case 202 /* BindingElement */:
-                    return ts.isInJSFile(node) && ts.isRequireVariableDeclaration(parent);
+                    return ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(parent);
                 default:
                     return false;
             }
@@ -134466,7 +134464,7 @@ var ts;
                 // Use the parent symbol if the location is commonjs require syntax on javascript files only.
                 if (ts.isInJSFile(referenceLocation)
                     && referenceLocation.parent.kind === 202 /* BindingElement */
-                    && ts.isRequireVariableDeclaration(referenceLocation.parent)) {
+                    && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(referenceLocation.parent)) {
                     referenceSymbol = referenceLocation.parent.symbol;
                     // The parent will not have a symbol if it's an ObjectBindingPattern (when destructuring is used).  In
                     // this case, just skip it, since the bound identifiers are not an alias of the import.
@@ -136173,7 +136171,7 @@ var ts;
                     return declaration.parent.kind === 268 /* NamedImports */;
                 case 202 /* BindingElement */:
                 case 253 /* VariableDeclaration */:
-                    return ts.isInJSFile(declaration) && ts.isRequireVariableDeclaration(declaration);
+                    return ts.isInJSFile(declaration) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(declaration);
                 default:
                     return false;
             }
@@ -137456,6 +137454,9 @@ var ts;
         // We use 1 NavNode to represent 'A.B.C', but there are multiple source nodes.
         // Only merge module nodes that have the same chain. Don't merge 'A.B.C' with 'A'!
         function areSameModule(a, b) {
+            if (!a.body || !b.body) {
+                return a.body === b.body;
+            }
             return a.body.kind === b.body.kind && (a.body.kind !== 260 /* ModuleDeclaration */ || areSameModule(a.body, b.body));
         }
         /** Merge source into target. Source should be thrown away after this is called. */
@@ -149205,7 +149206,7 @@ var ts;
             var importKind = getImportKind(importingFile, exportKind, compilerOptions);
             return ts.mapDefined(importingFile.imports, function (moduleSpecifier) {
                 var i = ts.importFromModuleSpecifier(moduleSpecifier);
-                if (ts.isRequireVariableDeclaration(i.parent)) {
+                if (ts.isVariableDeclarationInitializedToRequire(i.parent)) {
                     return checker.resolveExternalModuleName(moduleSpecifier) === moduleSymbol ? { declaration: i.parent, importKind: importKind, symbol: symbol, targetFlags: targetFlags } : undefined;
                 }
                 if (i.kind === 265 /* ImportDeclaration */ || i.kind === 264 /* ImportEqualsDeclaration */) {
@@ -157265,11 +157266,12 @@ var ts;
             var result = [];
             return visitor(selection) ? undefined : result;
             function visitor(node) {
+                var _a;
                 if (ts.isTypeReferenceNode(node)) {
                     if (ts.isIdentifier(node.typeName)) {
                         var symbol = checker.resolveName(node.typeName.text, node.typeName, 262144 /* TypeParameter */, /* excludeGlobals */ true);
-                        if (symbol === null || symbol === void 0 ? void 0 : symbol.declarations) {
-                            var declaration = ts.cast(ts.first(symbol.declarations), ts.isTypeParameterDeclaration);
+                        var declaration = ts.tryCast((_a = symbol === null || symbol === void 0 ? void 0 : symbol.declarations) === null || _a === void 0 ? void 0 : _a[0], ts.isTypeParameterDeclaration);
+                        if (declaration) {
                             if (rangeContainsSkipTrivia(statement, declaration, file) && !rangeContainsSkipTrivia(selection, declaration, file)) {
                                 ts.pushIfUnique(result, declaration);
                             }
diff --git a/lib/typescript.js b/lib/typescript.js
index cc9dd7d8363ac..0b317307ba389 100644
--- a/lib/typescript.js
+++ b/lib/typescript.js
@@ -294,7 +294,7 @@ 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 = "4.5.4";
+    ts.version = "4.5.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -16033,7 +16033,7 @@ var ts;
     }
     ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
     function getExternalModuleRequireArgument(node) {
-        return isRequireVariableDeclaration(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
+        return isVariableDeclarationInitializedToBareOrAccessedRequire(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
     }
     ts.getExternalModuleRequireArgument = getExternalModuleRequireArgument;
     function isInternalModuleImportEqualsDeclaration(node) {
@@ -16091,17 +16091,29 @@ var ts;
      * Returns true if the node is a VariableDeclaration initialized to a require call (see `isRequireCall`).
      * This function does not test if the node is in a JavaScript file or not.
      */
-    function isRequireVariableDeclaration(node) {
+    function isVariableDeclarationInitializedToRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ false);
+    }
+    ts.isVariableDeclarationInitializedToRequire = isVariableDeclarationInitializedToRequire;
+    /**
+     * Like {@link isVariableDeclarationInitializedToRequire} but allows things like `require("...").foo.bar` or `require("...")["baz"]`.
+     */
+    function isVariableDeclarationInitializedToBareOrAccessedRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ true);
+    }
+    ts.isVariableDeclarationInitializedToBareOrAccessedRequire = isVariableDeclarationInitializedToBareOrAccessedRequire;
+    function isVariableDeclarationInitializedWithRequireHelper(node, allowAccessedRequire) {
         if (node.kind === 202 /* BindingElement */) {
             node = node.parent.parent;
         }
-        return ts.isVariableDeclaration(node) && !!node.initializer && isRequireCall(getLeftmostAccessExpression(node.initializer), /*requireStringLiteralLikeArgument*/ true);
+        return ts.isVariableDeclaration(node) &&
+            !!node.initializer &&
+            isRequireCall(allowAccessedRequire ? getLeftmostAccessExpression(node.initializer) : node.initializer, /*requireStringLiteralLikeArgument*/ true);
     }
-    ts.isRequireVariableDeclaration = isRequireVariableDeclaration;
     function isRequireVariableStatement(node) {
         return ts.isVariableStatement(node)
             && node.declarationList.declarations.length > 0
-            && ts.every(node.declarationList.declarations, function (decl) { return isRequireVariableDeclaration(decl); });
+            && ts.every(node.declarationList.declarations, function (decl) { return isVariableDeclarationInitializedToRequire(decl); });
     }
     ts.isRequireVariableStatement = isRequireVariableStatement;
     function isSingleOrDoubleQuote(charCode) {
@@ -46258,7 +46270,7 @@ var ts;
                 checkStrictModeEvalOrArguments(node, node.name);
             }
             if (!ts.isBindingPattern(node.name)) {
-                if (ts.isInJSFile(node) && ts.isRequireVariableDeclaration(node) && !ts.getJSDocTypeTag(node)) {
+                if (ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node) && !ts.getJSDocTypeTag(node)) {
                     declareSymbolAndAddToSymbolTable(node, 2097152 /* Alias */, 2097152 /* AliasExcludes */);
                 }
                 else if (ts.isBlockOrCatchScoped(node)) {
@@ -49037,7 +49049,7 @@ var ts;
                     && isAliasableOrJsExpression(node.parent.right)
                 || node.kind === 295 /* ShorthandPropertyAssignment */
                 || node.kind === 294 /* PropertyAssignment */ && isAliasableOrJsExpression(node.initializer)
-                || ts.isRequireVariableDeclaration(node);
+                || ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node);
         }
         function isAliasableOrJsExpression(e) {
             return ts.isAliasableExpression(e) || ts.isFunctionExpression(e) && isJSConstructor(e);
@@ -50008,7 +50020,7 @@ var ts;
                         if (!sigs || !sigs.length) {
                             sigs = getSignaturesOfStructuredType(type, 1 /* Construct */);
                         }
-                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */)) {
+                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */, /*skipObjectFunctionPropertyAugment*/ true)) {
                             var moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol, reference);
                             return cloneTypeAsModuleType(symbol, moduleType, referenceParent);
                         }
@@ -80440,7 +80452,7 @@ var ts;
             }
             // For a commonjs `const x = require`, validate the alias and exit
             var symbol = getSymbolOfNode(node);
-            if (symbol.flags & 2097152 /* Alias */ && ts.isRequireVariableDeclaration(node)) {
+            if (symbol.flags & 2097152 /* Alias */ && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node)) {
                 checkAliasSymbol(node);
                 return;
             }
@@ -124537,7 +124549,7 @@ var ts;
                         isWhiteSpaceOnlyJsxText(child);
                     if (lookInPreviousChild) {
                         // actual start of the node is past the position - previous token should be at the end of previous child
-                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile);
+                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile, n.kind);
                         return candidate_1 && findRightmostToken(candidate_1, sourceFile);
                     }
                     else {
@@ -124551,7 +124563,7 @@ var ts;
             // the only known case is when position is at the end of the file.
             // Try to find the rightmost token in the file without filtering.
             // Namely we are skipping the check: 'position < node.end'
-            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
             return candidate && findRightmostToken(candidate, sourceFile);
         }
     }
@@ -124567,17 +124579,19 @@ var ts;
         if (children.length === 0) {
             return n;
         }
-        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
         return candidate && findRightmostToken(candidate, sourceFile);
     }
     /**
      * Finds the rightmost child to the left of `children[exclusiveStartPosition]` which is a non-all-whitespace token or has constituent tokens.
      */
-    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile) {
+    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile, parentKind) {
         for (var i = exclusiveStartPosition - 1; i >= 0; i--) {
             var child = children[i];
             if (isWhiteSpaceOnlyJsxText(child)) {
-                ts.Debug.assert(i > 0, "`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                if (i === 0 && (parentKind === 11 /* JsxText */ || parentKind === 278 /* JsxSelfClosingElement */)) {
+                    ts.Debug.fail("`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                }
             }
             else if (nodeHasTokens(children[i], sourceFile)) {
                 return children[i];
@@ -128994,7 +129008,7 @@ var ts;
             return (location === null || location === void 0 ? void 0 : location.kind) === 79 /* Identifier */ ? ts.createTextSpanFromNode(location) : undefined;
         }
         function completionInfoFromData(sourceFile, host, program, compilerOptions, log, completionData, preferences) {
-            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
+            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, isRightOfOpenTag = completionData.isRightOfOpenTag, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
             // Verify if the file is JSX language variant
             if (ts.getLanguageVariant(sourceFile.scriptKind) === 1 /* JSX */) {
                 var completionInfo = getJsxClosingTagCompletion(location, sourceFile);
@@ -129005,7 +129019,7 @@ var ts;
             var entries = [];
             if (isUncheckedFile(sourceFile, compilerOptions)) {
                 var uniqueNames = getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
                 getJSCompletionEntries(sourceFile, location.pos, uniqueNames, ts.getEmitScriptTarget(compilerOptions), entries); // TODO: GH#18217
             }
             else {
@@ -129013,7 +129027,7 @@ var ts;
                     return undefined;
                 }
                 getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
             }
             if (keywordFilters !== 0 /* None */) {
                 var entryNames = new ts.Set(entries.map(function (e) { return e.name; }));
@@ -129119,7 +129133,7 @@ var ts;
         function createCompletionEntryForLiteral(sourceFile, preferences, literal) {
             return { name: completionNameForLiteral(sourceFile, preferences, literal), kind: "string" /* string */, kindModifiers: "" /* none */, sortText: SortText.LocationPriority };
         }
-        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind) {
+        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a, _b;
             var insertText;
             var replacementSpan = ts.getReplacementSpanForContextToken(replacementToken);
@@ -129190,24 +129204,7 @@ var ts;
                     source = CompletionSource.ClassMemberSnippet;
                 }
             }
-            // Before offering up a JSX attribute snippet, ensure that we aren't potentially completing
-            // a tag name; this may appear as an attribute after the "<" when the tag has not yet been
-            // closed, as in:
-            //
-            //     return <>
-            //         foo <butto|
-            //     </>
-            //
-            // We can detect this case by checking if both:
-            //
-            //     1. The location is "<", so we are completing immediately after it.
-            //     2. The "<" has the same position as its parent, so is not a binary expression.
-            var kind = ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location);
-            if (kind === "JSX attribute" /* jsxAttribute */
-                && (location.kind !== 29 /* LessThanToken */ || location.pos !== location.parent.pos)
-                && preferences.includeCompletionsWithSnippetText
-                && preferences.jsxAttributeCompletionStyle
-                && preferences.jsxAttributeCompletionStyle !== "none") {
+            if (isJsxIdentifierExpected && !isRightOfOpenTag && preferences.includeCompletionsWithSnippetText && preferences.jsxAttributeCompletionStyle && preferences.jsxAttributeCompletionStyle !== "none") {
                 var useBraces_1 = preferences.jsxAttributeCompletionStyle === "braces";
                 var type = typeChecker.getTypeOfSymbolAtLocation(symbol, location);
                 // If is boolean like or undefined, don't return a snippet we want just to return the completion.
@@ -129245,7 +129242,7 @@ var ts;
             // entries (like JavaScript identifier entries).
             return {
                 name: name,
-                kind: kind,
+                kind: ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location),
                 kindModifiers: ts.SymbolDisplay.getSymbolModifiers(typeChecker, symbol),
                 sortText: sortText,
                 source: source,
@@ -129520,7 +129517,7 @@ var ts;
                 return CompletionSource.ThisProperty;
             }
         }
-        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap) {
+        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a;
             var start = ts.timestamp();
             var variableDeclaration = getVariableDeclaration(location);
@@ -129541,7 +129538,7 @@ var ts;
                 var name = info.name, needsConvertPropertyAccess = info.needsConvertPropertyAccess;
                 var sortTextId = (_a = symbolToSortTextIdMap === null || symbolToSortTextIdMap === void 0 ? void 0 : symbolToSortTextIdMap[ts.getSymbolId(symbol)]) !== null && _a !== void 0 ? _a : 11 /* LocationPriority */;
                 var sortText = (isDeprecated(symbol, typeChecker) ? 8 /* DeprecatedOffset */ + sortTextId : sortTextId).toString();
-                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind);
+                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind, isJsxIdentifierExpected, isRightOfOpenTag);
                 if (!entry) {
                     continue;
                 }
@@ -130135,6 +130132,7 @@ var ts;
                 symbolToSortTextIdMap: symbolToSortTextIdMap,
                 isTypeOnlyLocation: isTypeOnlyLocation,
                 isJsxIdentifierExpected: isJsxIdentifierExpected,
+                isRightOfOpenTag: isRightOfOpenTag,
                 importCompletionNode: importCompletionNode,
                 hasUnresolvedAutoImports: hasUnresolvedAutoImports,
             };
@@ -133066,7 +133064,7 @@ var ts;
                     ts.Debug.assert(parent.name === node);
                     return true;
                 case 202 /* BindingElement */:
-                    return ts.isInJSFile(node) && ts.isRequireVariableDeclaration(parent);
+                    return ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(parent);
                 default:
                     return false;
             }
@@ -134466,7 +134464,7 @@ var ts;
                 // Use the parent symbol if the location is commonjs require syntax on javascript files only.
                 if (ts.isInJSFile(referenceLocation)
                     && referenceLocation.parent.kind === 202 /* BindingElement */
-                    && ts.isRequireVariableDeclaration(referenceLocation.parent)) {
+                    && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(referenceLocation.parent)) {
                     referenceSymbol = referenceLocation.parent.symbol;
                     // The parent will not have a symbol if it's an ObjectBindingPattern (when destructuring is used).  In
                     // this case, just skip it, since the bound identifiers are not an alias of the import.
@@ -136173,7 +136171,7 @@ var ts;
                     return declaration.parent.kind === 268 /* NamedImports */;
                 case 202 /* BindingElement */:
                 case 253 /* VariableDeclaration */:
-                    return ts.isInJSFile(declaration) && ts.isRequireVariableDeclaration(declaration);
+                    return ts.isInJSFile(declaration) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(declaration);
                 default:
                     return false;
             }
@@ -137456,6 +137454,9 @@ var ts;
         // We use 1 NavNode to represent 'A.B.C', but there are multiple source nodes.
         // Only merge module nodes that have the same chain. Don't merge 'A.B.C' with 'A'!
         function areSameModule(a, b) {
+            if (!a.body || !b.body) {
+                return a.body === b.body;
+            }
             return a.body.kind === b.body.kind && (a.body.kind !== 260 /* ModuleDeclaration */ || areSameModule(a.body, b.body));
         }
         /** Merge source into target. Source should be thrown away after this is called. */
@@ -149205,7 +149206,7 @@ var ts;
             var importKind = getImportKind(importingFile, exportKind, compilerOptions);
             return ts.mapDefined(importingFile.imports, function (moduleSpecifier) {
                 var i = ts.importFromModuleSpecifier(moduleSpecifier);
-                if (ts.isRequireVariableDeclaration(i.parent)) {
+                if (ts.isVariableDeclarationInitializedToRequire(i.parent)) {
                     return checker.resolveExternalModuleName(moduleSpecifier) === moduleSymbol ? { declaration: i.parent, importKind: importKind, symbol: symbol, targetFlags: targetFlags } : undefined;
                 }
                 if (i.kind === 265 /* ImportDeclaration */ || i.kind === 264 /* ImportEqualsDeclaration */) {
@@ -157265,11 +157266,12 @@ var ts;
             var result = [];
             return visitor(selection) ? undefined : result;
             function visitor(node) {
+                var _a;
                 if (ts.isTypeReferenceNode(node)) {
                     if (ts.isIdentifier(node.typeName)) {
                         var symbol = checker.resolveName(node.typeName.text, node.typeName, 262144 /* TypeParameter */, /* excludeGlobals */ true);
-                        if (symbol === null || symbol === void 0 ? void 0 : symbol.declarations) {
-                            var declaration = ts.cast(ts.first(symbol.declarations), ts.isTypeParameterDeclaration);
+                        var declaration = ts.tryCast((_a = symbol === null || symbol === void 0 ? void 0 : symbol.declarations) === null || _a === void 0 ? void 0 : _a[0], ts.isTypeParameterDeclaration);
+                        if (declaration) {
                             if (rangeContainsSkipTrivia(statement, declaration, file) && !rangeContainsSkipTrivia(selection, declaration, file)) {
                                 ts.pushIfUnique(result, declaration);
                             }
diff --git a/lib/typescriptServices.js b/lib/typescriptServices.js
index 1f85972b8f1ec..bdd26eb4e882c 100644
--- a/lib/typescriptServices.js
+++ b/lib/typescriptServices.js
@@ -294,7 +294,7 @@ 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 = "4.5.4";
+    ts.version = "4.5.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -16033,7 +16033,7 @@ var ts;
     }
     ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
     function getExternalModuleRequireArgument(node) {
-        return isRequireVariableDeclaration(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
+        return isVariableDeclarationInitializedToBareOrAccessedRequire(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
     }
     ts.getExternalModuleRequireArgument = getExternalModuleRequireArgument;
     function isInternalModuleImportEqualsDeclaration(node) {
@@ -16091,17 +16091,29 @@ var ts;
      * Returns true if the node is a VariableDeclaration initialized to a require call (see `isRequireCall`).
      * This function does not test if the node is in a JavaScript file or not.
      */
-    function isRequireVariableDeclaration(node) {
+    function isVariableDeclarationInitializedToRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ false);
+    }
+    ts.isVariableDeclarationInitializedToRequire = isVariableDeclarationInitializedToRequire;
+    /**
+     * Like {@link isVariableDeclarationInitializedToRequire} but allows things like `require("...").foo.bar` or `require("...")["baz"]`.
+     */
+    function isVariableDeclarationInitializedToBareOrAccessedRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ true);
+    }
+    ts.isVariableDeclarationInitializedToBareOrAccessedRequire = isVariableDeclarationInitializedToBareOrAccessedRequire;
+    function isVariableDeclarationInitializedWithRequireHelper(node, allowAccessedRequire) {
         if (node.kind === 202 /* BindingElement */) {
             node = node.parent.parent;
         }
-        return ts.isVariableDeclaration(node) && !!node.initializer && isRequireCall(getLeftmostAccessExpression(node.initializer), /*requireStringLiteralLikeArgument*/ true);
+        return ts.isVariableDeclaration(node) &&
+            !!node.initializer &&
+            isRequireCall(allowAccessedRequire ? getLeftmostAccessExpression(node.initializer) : node.initializer, /*requireStringLiteralLikeArgument*/ true);
     }
-    ts.isRequireVariableDeclaration = isRequireVariableDeclaration;
     function isRequireVariableStatement(node) {
         return ts.isVariableStatement(node)
             && node.declarationList.declarations.length > 0
-            && ts.every(node.declarationList.declarations, function (decl) { return isRequireVariableDeclaration(decl); });
+            && ts.every(node.declarationList.declarations, function (decl) { return isVariableDeclarationInitializedToRequire(decl); });
     }
     ts.isRequireVariableStatement = isRequireVariableStatement;
     function isSingleOrDoubleQuote(charCode) {
@@ -46258,7 +46270,7 @@ var ts;
                 checkStrictModeEvalOrArguments(node, node.name);
             }
             if (!ts.isBindingPattern(node.name)) {
-                if (ts.isInJSFile(node) && ts.isRequireVariableDeclaration(node) && !ts.getJSDocTypeTag(node)) {
+                if (ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node) && !ts.getJSDocTypeTag(node)) {
                     declareSymbolAndAddToSymbolTable(node, 2097152 /* Alias */, 2097152 /* AliasExcludes */);
                 }
                 else if (ts.isBlockOrCatchScoped(node)) {
@@ -49037,7 +49049,7 @@ var ts;
                     && isAliasableOrJsExpression(node.parent.right)
                 || node.kind === 295 /* ShorthandPropertyAssignment */
                 || node.kind === 294 /* PropertyAssignment */ && isAliasableOrJsExpression(node.initializer)
-                || ts.isRequireVariableDeclaration(node);
+                || ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node);
         }
         function isAliasableOrJsExpression(e) {
             return ts.isAliasableExpression(e) || ts.isFunctionExpression(e) && isJSConstructor(e);
@@ -50008,7 +50020,7 @@ var ts;
                         if (!sigs || !sigs.length) {
                             sigs = getSignaturesOfStructuredType(type, 1 /* Construct */);
                         }
-                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */)) {
+                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */, /*skipObjectFunctionPropertyAugment*/ true)) {
                             var moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol, reference);
                             return cloneTypeAsModuleType(symbol, moduleType, referenceParent);
                         }
@@ -80440,7 +80452,7 @@ var ts;
             }
             // For a commonjs `const x = require`, validate the alias and exit
             var symbol = getSymbolOfNode(node);
-            if (symbol.flags & 2097152 /* Alias */ && ts.isRequireVariableDeclaration(node)) {
+            if (symbol.flags & 2097152 /* Alias */ && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node)) {
                 checkAliasSymbol(node);
                 return;
             }
@@ -124537,7 +124549,7 @@ var ts;
                         isWhiteSpaceOnlyJsxText(child);
                     if (lookInPreviousChild) {
                         // actual start of the node is past the position - previous token should be at the end of previous child
-                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile);
+                        var candidate_1 = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ i, sourceFile, n.kind);
                         return candidate_1 && findRightmostToken(candidate_1, sourceFile);
                     }
                     else {
@@ -124551,7 +124563,7 @@ var ts;
             // the only known case is when position is at the end of the file.
             // Try to find the rightmost token in the file without filtering.
             // Namely we are skipping the check: 'position < node.end'
-            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+            var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
             return candidate && findRightmostToken(candidate, sourceFile);
         }
     }
@@ -124567,17 +124579,19 @@ var ts;
         if (children.length === 0) {
             return n;
         }
-        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile);
+        var candidate = findRightmostChildNodeWithTokens(children, /*exclusiveStartPosition*/ children.length, sourceFile, n.kind);
         return candidate && findRightmostToken(candidate, sourceFile);
     }
     /**
      * Finds the rightmost child to the left of `children[exclusiveStartPosition]` which is a non-all-whitespace token or has constituent tokens.
      */
-    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile) {
+    function findRightmostChildNodeWithTokens(children, exclusiveStartPosition, sourceFile, parentKind) {
         for (var i = exclusiveStartPosition - 1; i >= 0; i--) {
             var child = children[i];
             if (isWhiteSpaceOnlyJsxText(child)) {
-                ts.Debug.assert(i > 0, "`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                if (i === 0 && (parentKind === 11 /* JsxText */ || parentKind === 278 /* JsxSelfClosingElement */)) {
+                    ts.Debug.fail("`JsxText` tokens should not be the first child of `JsxElement | JsxSelfClosingElement`");
+                }
             }
             else if (nodeHasTokens(children[i], sourceFile)) {
                 return children[i];
@@ -128994,7 +129008,7 @@ var ts;
             return (location === null || location === void 0 ? void 0 : location.kind) === 79 /* Identifier */ ? ts.createTextSpanFromNode(location) : undefined;
         }
         function completionInfoFromData(sourceFile, host, program, compilerOptions, log, completionData, preferences) {
-            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
+            var symbols = completionData.symbols, contextToken = completionData.contextToken, completionKind = completionData.completionKind, isInSnippetScope = completionData.isInSnippetScope, isNewIdentifierLocation = completionData.isNewIdentifierLocation, location = completionData.location, propertyAccessToConvert = completionData.propertyAccessToConvert, keywordFilters = completionData.keywordFilters, literals = completionData.literals, symbolToOriginInfoMap = completionData.symbolToOriginInfoMap, recommendedCompletion = completionData.recommendedCompletion, isJsxInitializer = completionData.isJsxInitializer, isTypeOnlyLocation = completionData.isTypeOnlyLocation, isJsxIdentifierExpected = completionData.isJsxIdentifierExpected, isRightOfOpenTag = completionData.isRightOfOpenTag, importCompletionNode = completionData.importCompletionNode, insideJsDocTagTypeExpression = completionData.insideJsDocTagTypeExpression, symbolToSortTextIdMap = completionData.symbolToSortTextIdMap, hasUnresolvedAutoImports = completionData.hasUnresolvedAutoImports;
             // Verify if the file is JSX language variant
             if (ts.getLanguageVariant(sourceFile.scriptKind) === 1 /* JSX */) {
                 var completionInfo = getJsxClosingTagCompletion(location, sourceFile);
@@ -129005,7 +129019,7 @@ var ts;
             var entries = [];
             if (isUncheckedFile(sourceFile, compilerOptions)) {
                 var uniqueNames = getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
                 getJSCompletionEntries(sourceFile, location.pos, uniqueNames, ts.getEmitScriptTarget(compilerOptions), entries); // TODO: GH#18217
             }
             else {
@@ -129013,7 +129027,7 @@ var ts;
                     return undefined;
                 }
                 getCompletionEntriesFromSymbols(symbols, entries, 
-                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap);
+                /*replacementToken*/ undefined, contextToken, location, sourceFile, host, program, ts.getEmitScriptTarget(compilerOptions), log, completionKind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, isJsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag);
             }
             if (keywordFilters !== 0 /* None */) {
                 var entryNames = new ts.Set(entries.map(function (e) { return e.name; }));
@@ -129119,7 +129133,7 @@ var ts;
         function createCompletionEntryForLiteral(sourceFile, preferences, literal) {
             return { name: completionNameForLiteral(sourceFile, preferences, literal), kind: "string" /* string */, kindModifiers: "" /* none */, sortText: SortText.LocationPriority };
         }
-        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind) {
+        function createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, options, preferences, completionKind, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a, _b;
             var insertText;
             var replacementSpan = ts.getReplacementSpanForContextToken(replacementToken);
@@ -129190,24 +129204,7 @@ var ts;
                     source = CompletionSource.ClassMemberSnippet;
                 }
             }
-            // Before offering up a JSX attribute snippet, ensure that we aren't potentially completing
-            // a tag name; this may appear as an attribute after the "<" when the tag has not yet been
-            // closed, as in:
-            //
-            //     return <>
-            //         foo <butto|
-            //     </>
-            //
-            // We can detect this case by checking if both:
-            //
-            //     1. The location is "<", so we are completing immediately after it.
-            //     2. The "<" has the same position as its parent, so is not a binary expression.
-            var kind = ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location);
-            if (kind === "JSX attribute" /* jsxAttribute */
-                && (location.kind !== 29 /* LessThanToken */ || location.pos !== location.parent.pos)
-                && preferences.includeCompletionsWithSnippetText
-                && preferences.jsxAttributeCompletionStyle
-                && preferences.jsxAttributeCompletionStyle !== "none") {
+            if (isJsxIdentifierExpected && !isRightOfOpenTag && preferences.includeCompletionsWithSnippetText && preferences.jsxAttributeCompletionStyle && preferences.jsxAttributeCompletionStyle !== "none") {
                 var useBraces_1 = preferences.jsxAttributeCompletionStyle === "braces";
                 var type = typeChecker.getTypeOfSymbolAtLocation(symbol, location);
                 // If is boolean like or undefined, don't return a snippet we want just to return the completion.
@@ -129245,7 +129242,7 @@ var ts;
             // entries (like JavaScript identifier entries).
             return {
                 name: name,
-                kind: kind,
+                kind: ts.SymbolDisplay.getSymbolKind(typeChecker, symbol, location),
                 kindModifiers: ts.SymbolDisplay.getSymbolModifiers(typeChecker, symbol),
                 sortText: sortText,
                 source: source,
@@ -129520,7 +129517,7 @@ var ts;
                 return CompletionSource.ThisProperty;
             }
         }
-        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap) {
+        function getCompletionEntriesFromSymbols(symbols, entries, replacementToken, contextToken, location, sourceFile, host, program, target, log, kind, preferences, compilerOptions, isTypeOnlyLocation, propertyAccessToConvert, jsxIdentifierExpected, isJsxInitializer, importCompletionNode, recommendedCompletion, symbolToOriginInfoMap, symbolToSortTextIdMap, isJsxIdentifierExpected, isRightOfOpenTag) {
             var _a;
             var start = ts.timestamp();
             var variableDeclaration = getVariableDeclaration(location);
@@ -129541,7 +129538,7 @@ var ts;
                 var name = info.name, needsConvertPropertyAccess = info.needsConvertPropertyAccess;
                 var sortTextId = (_a = symbolToSortTextIdMap === null || symbolToSortTextIdMap === void 0 ? void 0 : symbolToSortTextIdMap[ts.getSymbolId(symbol)]) !== null && _a !== void 0 ? _a : 11 /* LocationPriority */;
                 var sortText = (isDeprecated(symbol, typeChecker) ? 8 /* DeprecatedOffset */ + sortTextId : sortTextId).toString();
-                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind);
+                var entry = createCompletionEntry(symbol, sortText, replacementToken, contextToken, location, sourceFile, host, program, name, needsConvertPropertyAccess, origin, recommendedCompletion, propertyAccessToConvert, isJsxInitializer, importCompletionNode, useSemicolons, compilerOptions, preferences, kind, isJsxIdentifierExpected, isRightOfOpenTag);
                 if (!entry) {
                     continue;
                 }
@@ -130135,6 +130132,7 @@ var ts;
                 symbolToSortTextIdMap: symbolToSortTextIdMap,
                 isTypeOnlyLocation: isTypeOnlyLocation,
                 isJsxIdentifierExpected: isJsxIdentifierExpected,
+                isRightOfOpenTag: isRightOfOpenTag,
                 importCompletionNode: importCompletionNode,
                 hasUnresolvedAutoImports: hasUnresolvedAutoImports,
             };
@@ -133066,7 +133064,7 @@ var ts;
                     ts.Debug.assert(parent.name === node);
                     return true;
                 case 202 /* BindingElement */:
-                    return ts.isInJSFile(node) && ts.isRequireVariableDeclaration(parent);
+                    return ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(parent);
                 default:
                     return false;
             }
@@ -134466,7 +134464,7 @@ var ts;
                 // Use the parent symbol if the location is commonjs require syntax on javascript files only.
                 if (ts.isInJSFile(referenceLocation)
                     && referenceLocation.parent.kind === 202 /* BindingElement */
-                    && ts.isRequireVariableDeclaration(referenceLocation.parent)) {
+                    && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(referenceLocation.parent)) {
                     referenceSymbol = referenceLocation.parent.symbol;
                     // The parent will not have a symbol if it's an ObjectBindingPattern (when destructuring is used).  In
                     // this case, just skip it, since the bound identifiers are not an alias of the import.
@@ -136173,7 +136171,7 @@ var ts;
                     return declaration.parent.kind === 268 /* NamedImports */;
                 case 202 /* BindingElement */:
                 case 253 /* VariableDeclaration */:
-                    return ts.isInJSFile(declaration) && ts.isRequireVariableDeclaration(declaration);
+                    return ts.isInJSFile(declaration) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(declaration);
                 default:
                     return false;
             }
@@ -137456,6 +137454,9 @@ var ts;
         // We use 1 NavNode to represent 'A.B.C', but there are multiple source nodes.
         // Only merge module nodes that have the same chain. Don't merge 'A.B.C' with 'A'!
         function areSameModule(a, b) {
+            if (!a.body || !b.body) {
+                return a.body === b.body;
+            }
             return a.body.kind === b.body.kind && (a.body.kind !== 260 /* ModuleDeclaration */ || areSameModule(a.body, b.body));
         }
         /** Merge source into target. Source should be thrown away after this is called. */
@@ -149205,7 +149206,7 @@ var ts;
             var importKind = getImportKind(importingFile, exportKind, compilerOptions);
             return ts.mapDefined(importingFile.imports, function (moduleSpecifier) {
                 var i = ts.importFromModuleSpecifier(moduleSpecifier);
-                if (ts.isRequireVariableDeclaration(i.parent)) {
+                if (ts.isVariableDeclarationInitializedToRequire(i.parent)) {
                     return checker.resolveExternalModuleName(moduleSpecifier) === moduleSymbol ? { declaration: i.parent, importKind: importKind, symbol: symbol, targetFlags: targetFlags } : undefined;
                 }
                 if (i.kind === 265 /* ImportDeclaration */ || i.kind === 264 /* ImportEqualsDeclaration */) {
@@ -157265,11 +157266,12 @@ var ts;
             var result = [];
             return visitor(selection) ? undefined : result;
             function visitor(node) {
+                var _a;
                 if (ts.isTypeReferenceNode(node)) {
                     if (ts.isIdentifier(node.typeName)) {
                         var symbol = checker.resolveName(node.typeName.text, node.typeName, 262144 /* TypeParameter */, /* excludeGlobals */ true);
-                        if (symbol === null || symbol === void 0 ? void 0 : symbol.declarations) {
-                            var declaration = ts.cast(ts.first(symbol.declarations), ts.isTypeParameterDeclaration);
+                        var declaration = ts.tryCast((_a = symbol === null || symbol === void 0 ? void 0 : symbol.declarations) === null || _a === void 0 ? void 0 : _a[0], ts.isTypeParameterDeclaration);
+                        if (declaration) {
                             if (rangeContainsSkipTrivia(statement, declaration, file) && !rangeContainsSkipTrivia(selection, declaration, file)) {
                                 ts.pushIfUnique(result, declaration);
                             }
diff --git a/lib/typingsInstaller.js b/lib/typingsInstaller.js
index 17e9323ed0622..7a0fd43fa3996 100644
--- a/lib/typingsInstaller.js
+++ b/lib/typingsInstaller.js
@@ -89,7 +89,7 @@ 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 = "4.5.4";
+    ts.version = "4.5.5";
     /* @internal */
     var Comparison;
     (function (Comparison) {
@@ -15828,7 +15828,7 @@ var ts;
     }
     ts.getExternalModuleImportEqualsDeclarationExpression = getExternalModuleImportEqualsDeclarationExpression;
     function getExternalModuleRequireArgument(node) {
-        return isRequireVariableDeclaration(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
+        return isVariableDeclarationInitializedToBareOrAccessedRequire(node) && getLeftmostAccessExpression(node.initializer).arguments[0];
     }
     ts.getExternalModuleRequireArgument = getExternalModuleRequireArgument;
     function isInternalModuleImportEqualsDeclaration(node) {
@@ -15886,17 +15886,29 @@ var ts;
      * Returns true if the node is a VariableDeclaration initialized to a require call (see `isRequireCall`).
      * This function does not test if the node is in a JavaScript file or not.
      */
-    function isRequireVariableDeclaration(node) {
+    function isVariableDeclarationInitializedToRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ false);
+    }
+    ts.isVariableDeclarationInitializedToRequire = isVariableDeclarationInitializedToRequire;
+    /**
+     * Like {@link isVariableDeclarationInitializedToRequire} but allows things like `require("...").foo.bar` or `require("...")["baz"]`.
+     */
+    function isVariableDeclarationInitializedToBareOrAccessedRequire(node) {
+        return isVariableDeclarationInitializedWithRequireHelper(node, /*allowAccessedRequire*/ true);
+    }
+    ts.isVariableDeclarationInitializedToBareOrAccessedRequire = isVariableDeclarationInitializedToBareOrAccessedRequire;
+    function isVariableDeclarationInitializedWithRequireHelper(node, allowAccessedRequire) {
         if (node.kind === 202 /* BindingElement */) {
             node = node.parent.parent;
         }
-        return ts.isVariableDeclaration(node) && !!node.initializer && isRequireCall(getLeftmostAccessExpression(node.initializer), /*requireStringLiteralLikeArgument*/ true);
+        return ts.isVariableDeclaration(node) &&
+            !!node.initializer &&
+            isRequireCall(allowAccessedRequire ? getLeftmostAccessExpression(node.initializer) : node.initializer, /*requireStringLiteralLikeArgument*/ true);
     }
-    ts.isRequireVariableDeclaration = isRequireVariableDeclaration;
     function isRequireVariableStatement(node) {
         return ts.isVariableStatement(node)
             && node.declarationList.declarations.length > 0
-            && ts.every(node.declarationList.declarations, function (decl) { return isRequireVariableDeclaration(decl); });
+            && ts.every(node.declarationList.declarations, function (decl) { return isVariableDeclarationInitializedToRequire(decl); });
     }
     ts.isRequireVariableStatement = isRequireVariableStatement;
     function isSingleOrDoubleQuote(charCode) {
@@ -46053,7 +46065,7 @@ var ts;
                 checkStrictModeEvalOrArguments(node, node.name);
             }
             if (!ts.isBindingPattern(node.name)) {
-                if (ts.isInJSFile(node) && ts.isRequireVariableDeclaration(node) && !ts.getJSDocTypeTag(node)) {
+                if (ts.isInJSFile(node) && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node) && !ts.getJSDocTypeTag(node)) {
                     declareSymbolAndAddToSymbolTable(node, 2097152 /* Alias */, 2097152 /* AliasExcludes */);
                 }
                 else if (ts.isBlockOrCatchScoped(node)) {
@@ -48832,7 +48844,7 @@ var ts;
                     && isAliasableOrJsExpression(node.parent.right)
                 || node.kind === 295 /* ShorthandPropertyAssignment */
                 || node.kind === 294 /* PropertyAssignment */ && isAliasableOrJsExpression(node.initializer)
-                || ts.isRequireVariableDeclaration(node);
+                || ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node);
         }
         function isAliasableOrJsExpression(e) {
             return ts.isAliasableExpression(e) || ts.isFunctionExpression(e) && isJSConstructor(e);
@@ -49803,7 +49815,7 @@ var ts;
                         if (!sigs || !sigs.length) {
                             sigs = getSignaturesOfStructuredType(type, 1 /* Construct */);
                         }
-                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */)) {
+                        if ((sigs && sigs.length) || getPropertyOfType(type, "default" /* Default */, /*skipObjectFunctionPropertyAugment*/ true)) {
                             var moduleType = getTypeWithSyntheticDefaultImportType(type, symbol, moduleSymbol, reference);
                             return cloneTypeAsModuleType(symbol, moduleType, referenceParent);
                         }
@@ -80235,7 +80247,7 @@ var ts;
             }
             // For a commonjs `const x = require`, validate the alias and exit
             var symbol = getSymbolOfNode(node);
-            if (symbol.flags & 2097152 /* Alias */ && ts.isRequireVariableDeclaration(node)) {
+            if (symbol.flags & 2097152 /* Alias */ && ts.isVariableDeclarationInitializedToBareOrAccessedRequire(node)) {
                 checkAliasSymbol(node);
                 return;
             }
diff --git a/package.json b/package.json
index 84cb41b008415..05d1d0839829a 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "typescript",
     "author": "Microsoft Corp.",
     "homepage": "https://www.typescriptlang.org/",
-    "version": "4.5.4",
+    "version": "4.5.5",
     "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 b25b8191eda34..3a7fe050e357e 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 = "4.5.4" as string;
+    export const version = "4.5.5" as string;
 
     /**
      * Type of objects whose values are all of the same type.