diff --git a/extensions/javascript/syntaxes/JavaScript.tmLanguage.json b/extensions/javascript/syntaxes/JavaScript.tmLanguage.json
index 29765c0ba34..45dc54b7115 100644
--- a/extensions/javascript/syntaxes/JavaScript.tmLanguage.json
+++ b/extensions/javascript/syntaxes/JavaScript.tmLanguage.json
@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/8b44958a27860957872cc6f628d843a71686af63",
+	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/51323af933792ffbb9a088fd500536122be38b59",
 	"name": "JavaScript (with React support)",
 	"scopeName": "source.js",
 	"fileTypes": [
@@ -292,7 +292,7 @@
 			"patterns": [
 				{
 					"name": "meta.var-single-variable.expr.js",
-					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"beginCaptures": {
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 							"name": "meta.definition.variable.js entity.name.function.js"
@@ -354,7 +354,7 @@
 			"patterns": [
 				{
 					"name": "meta.object-binding-pattern-variable.js",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\{)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\{)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -370,7 +370,7 @@
 				},
 				{
 					"name": "meta.array-binding-pattern-variable.js",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\[)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\[)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -526,7 +526,7 @@
 					}
 				},
 				{
-					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"captures": {
 						"1": {
 							"name": "storage.modifier.js"
@@ -753,7 +753,7 @@
 						},
 						{
 							"name": "meta.definition.property.js entity.name.function.js",
-							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))"
+							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))"
 						},
 						{
 							"name": "meta.definition.property.js variable.object.property.js",
@@ -1884,7 +1884,7 @@
 		},
 		"after-operator-block-as-object-literal": {
 			"name": "meta.objectliteral.js",
-			"begin": "(?<=[=(,\\[?+!]|await|return|yield|throw|in|of|typeof|&&|\\|\\||\\*)\\s*(\\{)",
+			"begin": "(?<=[=(,\\[?+!]|^await|[^\\._$[:alnum:]]await|^return|[^\\._$[:alnum:]]return|^yield|[^\\._$[:alnum:]]yield|^throw|[^\\._$[:alnum:]]throw|^in|[^\\._$[:alnum:]]in|^of|[^\\._$[:alnum:]]of|^typeof|[^\\._$[:alnum:]]typeof|&&|\\|\\||\\*)\\s*(\\{)",
 			"beginCaptures": {
 				"1": {
 					"name": "punctuation.definition.block.js"
@@ -2057,13 +2057,13 @@
 			]
 		},
 		"function-call": {
-			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
-			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
+			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 			"patterns": [
 				{
 					"name": "meta.function-call.js",
 					"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*))",
-					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 					"patterns": [
 						{
 							"include": "#literal"
@@ -3295,7 +3295,7 @@
 			"patterns": [
 				{
 					"name": "string.regexp.js",
-					"begin": "(?<=[=(:,\\[?+!]|return|case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
+					"begin": "(?<=[=(:,\\[?+!]|^return|[^\\._$[:alnum:]]return|^case|[^\\._$[:alnum:]]case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
 					"beginCaptures": {
 						"1": {
 							"name": "punctuation.definition.string.begin.js"
@@ -4041,7 +4041,7 @@
 			]
 		},
 		"jsx-tag-without-attributes-in-expression": {
-			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|\\Wreturn|^return|\\Wdefault|^)\\s*\n  (?=(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
+			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|^return|[^\\._$[:alnum:]]return|^default|[^\\._$[:alnum:]]default|^)\\s*\n  (?=(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
 			"end": "(?!\\s*(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
 			"patterns": [
 				{
@@ -4089,7 +4089,7 @@
 			]
 		},
 		"jsx-tag-in-expression": {
-			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|\\Wreturn|^return|\\Wdefault|^)\\s*\n  (?!<\\s*[_$[:alpha:]][_$[:alnum:]]*((\\s+extends\\s+[^=>])|,)) # look ahead is not type parameter of arrow\n  (?=(<)\\s*\n  ([_$a-zA-Z][-$\\w.]*(?<!\\.|-))\n  (?=\\s+(?!\\?)|/?>))",
+			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|^return|[^\\._$[:alnum:]]return|^default|[^\\._$[:alnum:]]default|^)\\s*\n  (?!<\\s*[_$[:alpha:]][_$[:alnum:]]*((\\s+extends\\s+[^=>])|,)) # look ahead is not type parameter of arrow\n  (?=(<)\\s*\n  ([_$a-zA-Z][-$\\w.]*(?<!\\.|-))\n  (?=\\s+(?!\\?)|/?>))",
 			"end": "(/>)|(?:(</)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))\\s*(>))",
 			"endCaptures": {
 				"0": {
diff --git a/extensions/javascript/syntaxes/JavaScriptReact.tmLanguage.json b/extensions/javascript/syntaxes/JavaScriptReact.tmLanguage.json
index 30557f4a531..85ebfe2446f 100644
--- a/extensions/javascript/syntaxes/JavaScriptReact.tmLanguage.json
+++ b/extensions/javascript/syntaxes/JavaScriptReact.tmLanguage.json
@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/8b44958a27860957872cc6f628d843a71686af63",
+	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/51323af933792ffbb9a088fd500536122be38b59",
 	"name": "JavaScript (with React support)",
 	"scopeName": "source.js.jsx",
 	"fileTypes": [
@@ -292,7 +292,7 @@
 			"patterns": [
 				{
 					"name": "meta.var-single-variable.expr.js.jsx",
-					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"beginCaptures": {
 						"1": {
 							"name": "meta.definition.variable.js.jsx entity.name.function.js.jsx"
@@ -354,7 +354,7 @@
 			"patterns": [
 				{
 					"name": "meta.object-binding-pattern-variable.js.jsx",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\{)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\{)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -370,7 +370,7 @@
 				},
 				{
 					"name": "meta.array-binding-pattern-variable.js.jsx",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\[)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\[)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -526,7 +526,7 @@
 					}
 				},
 				{
-					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"captures": {
 						"1": {
 							"name": "storage.modifier.js.jsx"
@@ -753,7 +753,7 @@
 						},
 						{
 							"name": "meta.definition.property.js.jsx entity.name.function.js.jsx",
-							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))"
+							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))"
 						},
 						{
 							"name": "meta.definition.property.js.jsx variable.object.property.js.jsx",
@@ -1884,7 +1884,7 @@
 		},
 		"after-operator-block-as-object-literal": {
 			"name": "meta.objectliteral.js.jsx",
-			"begin": "(?<=[=(,\\[?+!]|await|return|yield|throw|in|of|typeof|&&|\\|\\||\\*)\\s*(\\{)",
+			"begin": "(?<=[=(,\\[?+!]|^await|[^\\._$[:alnum:]]await|^return|[^\\._$[:alnum:]]return|^yield|[^\\._$[:alnum:]]yield|^throw|[^\\._$[:alnum:]]throw|^in|[^\\._$[:alnum:]]in|^of|[^\\._$[:alnum:]]of|^typeof|[^\\._$[:alnum:]]typeof|&&|\\|\\||\\*)\\s*(\\{)",
 			"beginCaptures": {
 				"1": {
 					"name": "punctuation.definition.block.js.jsx"
@@ -2057,13 +2057,13 @@
 			]
 		},
 		"function-call": {
-			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
-			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
+			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 			"patterns": [
 				{
 					"name": "meta.function-call.js.jsx",
 					"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*))",
-					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 					"patterns": [
 						{
 							"include": "#literal"
@@ -3295,7 +3295,7 @@
 			"patterns": [
 				{
 					"name": "string.regexp.js.jsx",
-					"begin": "(?<=[=(:,\\[?+!]|return|case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
+					"begin": "(?<=[=(:,\\[?+!]|^return|[^\\._$[:alnum:]]return|^case|[^\\._$[:alnum:]]case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
 					"beginCaptures": {
 						"1": {
 							"name": "punctuation.definition.string.begin.js.jsx"
@@ -4041,7 +4041,7 @@
 			]
 		},
 		"jsx-tag-without-attributes-in-expression": {
-			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|\\Wreturn|^return|\\Wdefault|^)\\s*\n  (?=(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
+			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|^return|[^\\._$[:alnum:]]return|^default|[^\\._$[:alnum:]]default|^)\\s*\n  (?=(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
 			"end": "(?!\\s*(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
 			"patterns": [
 				{
@@ -4089,7 +4089,7 @@
 			]
 		},
 		"jsx-tag-in-expression": {
-			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|\\Wreturn|^return|\\Wdefault|^)\\s*\n  (?!<\\s*[_$[:alpha:]][_$[:alnum:]]*((\\s+extends\\s+[^=>])|,)) # look ahead is not type parameter of arrow\n  (?=(<)\\s*\n  ([_$a-zA-Z][-$\\w.]*(?<!\\.|-))\n  (?=\\s+(?!\\?)|/?>))",
+			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|^return|[^\\._$[:alnum:]]return|^default|[^\\._$[:alnum:]]default|^)\\s*\n  (?!<\\s*[_$[:alpha:]][_$[:alnum:]]*((\\s+extends\\s+[^=>])|,)) # look ahead is not type parameter of arrow\n  (?=(<)\\s*\n  ([_$a-zA-Z][-$\\w.]*(?<!\\.|-))\n  (?=\\s+(?!\\?)|/?>))",
 			"end": "(/>)|(?:(</)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))\\s*(>))",
 			"endCaptures": {
 				"0": {
diff --git a/extensions/typescript/syntaxes/TypeScript.tmLanguage.json b/extensions/typescript/syntaxes/TypeScript.tmLanguage.json
index cc81558cfc2..b76d98425eb 100644
--- a/extensions/typescript/syntaxes/TypeScript.tmLanguage.json
+++ b/extensions/typescript/syntaxes/TypeScript.tmLanguage.json
@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/8b44958a27860957872cc6f628d843a71686af63",
+	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/51323af933792ffbb9a088fd500536122be38b59",
 	"name": "TypeScript",
 	"scopeName": "source.ts",
 	"fileTypes": [
@@ -286,7 +286,7 @@
 			"patterns": [
 				{
 					"name": "meta.var-single-variable.expr.ts",
-					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"beginCaptures": {
 						"1": {
 							"name": "meta.definition.variable.ts entity.name.function.ts"
@@ -348,7 +348,7 @@
 			"patterns": [
 				{
 					"name": "meta.object-binding-pattern-variable.ts",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\{)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\{)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -364,7 +364,7 @@
 				},
 				{
 					"name": "meta.array-binding-pattern-variable.ts",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\[)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\[)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -520,7 +520,7 @@
 					}
 				},
 				{
-					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"captures": {
 						"1": {
 							"name": "storage.modifier.ts"
@@ -747,7 +747,7 @@
 						},
 						{
 							"name": "meta.definition.property.ts entity.name.function.ts",
-							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))"
+							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))"
 						},
 						{
 							"name": "meta.definition.property.ts variable.object.property.ts",
@@ -1878,7 +1878,7 @@
 		},
 		"after-operator-block-as-object-literal": {
 			"name": "meta.objectliteral.ts",
-			"begin": "(?<=[=(,\\[?+!]|await|return|yield|throw|in|of|typeof|&&|\\|\\||\\*)\\s*(\\{)",
+			"begin": "(?<=[=(,\\[?+!]|^await|[^\\._$[:alnum:]]await|^return|[^\\._$[:alnum:]]return|^yield|[^\\._$[:alnum:]]yield|^throw|[^\\._$[:alnum:]]throw|^in|[^\\._$[:alnum:]]in|^of|[^\\._$[:alnum:]]of|^typeof|[^\\._$[:alnum:]]typeof|&&|\\|\\||\\*)\\s*(\\{)",
 			"beginCaptures": {
 				"1": {
 					"name": "punctuation.definition.block.ts"
@@ -2051,13 +2051,13 @@
 			]
 		},
 		"function-call": {
-			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
-			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
+			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 			"patterns": [
 				{
 					"name": "meta.function-call.ts",
 					"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*))",
-					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 					"patterns": [
 						{
 							"include": "#literal"
@@ -2163,7 +2163,7 @@
 			"patterns": [
 				{
 					"name": "cast.expr.ts",
-					"begin": "(?:(?<=return|throw|yield|await|default|[=(,:>*?\\&\\|\\^]|[^_$[:alnum:]](?:\\+\\+|\\-\\-)|[^\\+]\\+|[^\\-]\\-))\\s*(<)(?!<?\\=)",
+					"begin": "(?:(?<=^return|[^\\._$[:alnum:]]return|^throw|[^\\._$[:alnum:]]throw|^yield|[^\\._$[:alnum:]]yield|^await|[^\\._$[:alnum:]]await|^default|[^\\._$[:alnum:]]default|[=(,:>*?\\&\\|\\^]|[^_$[:alnum:]](?:\\+\\+|\\-\\-)|[^\\+]\\+|[^\\-]\\-))\\s*(<)(?!<?\\=)",
 					"beginCaptures": {
 						"1": {
 							"name": "meta.brace.angle.ts"
@@ -3326,7 +3326,7 @@
 			"patterns": [
 				{
 					"name": "string.regexp.ts",
-					"begin": "(?<=[=(:,\\[?+!]|return|case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
+					"begin": "(?<=[=(:,\\[?+!]|^return|[^\\._$[:alnum:]]return|^case|[^\\._$[:alnum:]]case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
 					"beginCaptures": {
 						"1": {
 							"name": "punctuation.definition.string.begin.ts"
diff --git a/extensions/typescript/syntaxes/TypeScriptReact.tmLanguage.json b/extensions/typescript/syntaxes/TypeScriptReact.tmLanguage.json
index 5da35c8fe7f..c8bb27a8610 100644
--- a/extensions/typescript/syntaxes/TypeScriptReact.tmLanguage.json
+++ b/extensions/typescript/syntaxes/TypeScriptReact.tmLanguage.json
@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/8b44958a27860957872cc6f628d843a71686af63",
+	"version": "https://github.com/Microsoft/TypeScript-TmLanguage/commit/51323af933792ffbb9a088fd500536122be38b59",
 	"name": "TypeScriptReact",
 	"scopeName": "source.tsx",
 	"fileTypes": [
@@ -289,7 +289,7 @@
 			"patterns": [
 				{
 					"name": "meta.var-single-variable.expr.tsx",
-					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"begin": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"beginCaptures": {
 						"1": {
 							"name": "meta.definition.variable.tsx entity.name.function.tsx"
@@ -351,7 +351,7 @@
 			"patterns": [
 				{
 					"name": "meta.object-binding-pattern-variable.tsx",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\{)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\{)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -367,7 +367,7 @@
 				},
 				{
 					"name": "meta.array-binding-pattern-variable.tsx",
-					"begin": "(?<!=|:|of|in)\\s*(?=\\[)",
+					"begin": "(?<!=|:|^of|[^\\._$[:alnum:]]of|^in|[^\\._$[:alnum:]]in)\\s*(?=\\[)",
 					"end": "(?=$|^|[;,=}]|(\\s+(of|in)\\s+))",
 					"patterns": [
 						{
@@ -523,7 +523,7 @@
 					}
 				},
 				{
-					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))",
+					"match": "(?x)(?:\\s*\\b(public|private|protected|readonly)\\s+)?(\\.\\.\\.)?\\s*(?<!=|:)(?<![_$[:alnum:]])(?:(?<=\\.\\.\\.)|(?<!\\.))(?:(this)|([_$[:alpha:]][_$[:alnum:]]*))(?![_$[:alnum:]])(?:(?=\\.\\.\\.)|(?!\\.))\\s*(\\??)(?=\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))",
 					"captures": {
 						"1": {
 							"name": "storage.modifier.tsx"
@@ -750,7 +750,7 @@
 						},
 						{
 							"name": "meta.definition.property.tsx entity.name.function.tsx",
-							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)))"
+							"match": "(?x)([_$[:alpha:]][_$[:alnum:]]*)(?=(\\?\\s*)?\\s*\n# function assignment |\n(=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)) |\n# typeannotation is fn type: < | () | (... | (param: | (param, | (param? | (param= | (param) =>\n(:\\s*(\n  (<) |\n  ([(]\\s*(\n    ([)]) |\n    (\\.\\.\\.) |\n    ([_$[:alnum:]]+\\s*(\n      ([:,?=])|\n      ([)]\\s*=>)\n    ))\n  ))\n)) |\n(:\\s*(=>|(\\([^\\(\\)]*\\))|(<[^<>]*>)|[^<>(),=])+=\\s*(\n  ((async\\s+)?(\n    (function\\s*[(<*]) |\n    (function\\s+) |\n    ([_$[:alpha:]][_$[:alnum:]]*\\s*=>)\n  )) |\n  ((async\\s*)?(\n    # sure shot arrow functions even if => is on new line\n(\n  [(]\\s*\n  (\n    ([)]\\s*:) |                                                                 # ():\n    ((\\.\\.\\.\\s*)?[_$[:alpha:]][_$[:alnum:]]*\\s*:)                                            # [(]param: | [(]...param:\n  )\n) |\n(\n  [<]\\s*[_$[:alpha:]][_$[:alnum:]]*\\s+extends\\s*[^=>]                                        # < typeparam extends\n) |\n# arrow function possible to detect only with => on same line\n(\n  (<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<]|\\<\\s*([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))([^=<>]|=[^<])*\\>)*>\\s*)?                                                           # typeparameters\n  \\(\\s*([_$[:alpha:]\\{\\[]([^()]|\\((\\s*[^()]*)?\\))*)?\\)                          # parameteres\n  (\\s*:\\s*([^<>\\(\\)]|\\<[^<>]+\\>|\\([^\\(\\)]+\\))+)?                                # return type\n  \\s*=>                                                                         # arrow operator\n)\n  ))\n)))"
 						},
 						{
 							"name": "meta.definition.property.tsx variable.object.property.tsx",
@@ -1881,7 +1881,7 @@
 		},
 		"after-operator-block-as-object-literal": {
 			"name": "meta.objectliteral.tsx",
-			"begin": "(?<=[=(,\\[?+!]|await|return|yield|throw|in|of|typeof|&&|\\|\\||\\*)\\s*(\\{)",
+			"begin": "(?<=[=(,\\[?+!]|^await|[^\\._$[:alnum:]]await|^return|[^\\._$[:alnum:]]return|^yield|[^\\._$[:alnum:]]yield|^throw|[^\\._$[:alnum:]]throw|^in|[^\\._$[:alnum:]]in|^of|[^\\._$[:alnum:]]of|^typeof|[^\\._$[:alnum:]]typeof|&&|\\|\\||\\*)\\s*(\\{)",
 			"beginCaptures": {
 				"1": {
 					"name": "punctuation.definition.block.tsx"
@@ -2054,13 +2054,13 @@
 			]
 		},
 		"function-call": {
-			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
-			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+			"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
+			"end": "(?<=\\))(?!(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 			"patterns": [
 				{
 					"name": "meta.function-call.tsx",
 					"begin": "(?=(([_$[:alpha:]][_$[:alnum:]]*\\s*\\??\\.\\s*)*|(\\??\\.\\s*)?)([_$[:alpha:]][_$[:alnum:]]*))",
-					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\)))*\\>)*>\\s*)?\\()",
+					"end": "(?=\\s*(\\?\\.\\s*)?(<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>|\\<\\s*(([_$[:alpha:]]|(\\{[^\\{\\}]*\\})|(\\([^\\(\\)]*\\))|(\\[[^\\[\\]]*\\]))|(\\'[^\\']*\\')|(\\\"[^\\\"]*\\\")|(\\`[^\\`]*\\`))([^<>\\(]|(\\([^\\(\\)]*\\))|(?<==)\\>)*(?!=)\\>)*(?!=)>\\s*)?\\()",
 					"patterns": [
 						{
 							"include": "#literal"
@@ -3292,7 +3292,7 @@
 			"patterns": [
 				{
 					"name": "string.regexp.tsx",
-					"begin": "(?<=[=(:,\\[?+!]|return|case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
+					"begin": "(?<=[=(:,\\[?+!]|^return|[^\\._$[:alnum:]]return|^case|[^\\._$[:alnum:]]case|=>|&&|\\|\\||\\*\\/)\\s*(\\/)(?![\\/*])(?=(?:[^\\/\\\\\\[]|\\\\.|\\[([^\\]\\\\]|\\\\.)+\\])+\\/(?![\\/*])[gimuy]*(?!\\s*[a-zA-Z0-9_$]))",
 					"beginCaptures": {
 						"1": {
 							"name": "punctuation.definition.string.begin.tsx"
@@ -4038,7 +4038,7 @@
 			]
 		},
 		"jsx-tag-without-attributes-in-expression": {
-			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|\\Wreturn|^return|\\Wdefault|^)\\s*\n  (?=(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
+			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|^return|[^\\._$[:alnum:]]return|^default|[^\\._$[:alnum:]]default|^)\\s*\n  (?=(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
 			"end": "(?!\\s*(<)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))?\\s*(>))",
 			"patterns": [
 				{
@@ -4086,7 +4086,7 @@
 			]
 		},
 		"jsx-tag-in-expression": {
-			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|\\Wreturn|^return|\\Wdefault|^)\\s*\n  (?!<\\s*[_$[:alpha:]][_$[:alnum:]]*((\\s+extends\\s+[^=>])|,)) # look ahead is not type parameter of arrow\n  (?=(<)\\s*\n  ([_$a-zA-Z][-$\\w.]*(?<!\\.|-))\n  (?=\\s+(?!\\?)|/?>))",
+			"begin": "(?x)\n  (?<=[({\\[,?=>:*]|&&|\\|\\||\\?|^return|[^\\._$[:alnum:]]return|^default|[^\\._$[:alnum:]]default|^)\\s*\n  (?!<\\s*[_$[:alpha:]][_$[:alnum:]]*((\\s+extends\\s+[^=>])|,)) # look ahead is not type parameter of arrow\n  (?=(<)\\s*\n  ([_$a-zA-Z][-$\\w.]*(?<!\\.|-))\n  (?=\\s+(?!\\?)|/?>))",
 			"end": "(/>)|(?:(</)\\s*((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\\w.]*))(?<!\\.|-))\\s*(>))",
 			"endCaptures": {
 				"0": {