Fix keyof/infer keywords as type arguments

Author: sheetalkamat

TypeScript.YAML-tmLanguage

@@ -38,7 +38,7 @@ variables:
   typeParamersStart: ([_$[:alpha:]]|{{matchingBraces}}|{{matchingParenthesis}}|{{matchingBrackets}})
   typeParameters: (<\s*{{typeParamersStart}}([^=<>]|=[^<]|\<\s*{{typeParamersStart}}([^=<>]|=[^<])*\>)*>\s*)
   # Identifier start | matching braces | matching parenthesis | matching square brackets | matching strings
-  typeArgumentsStart: ({{identifier}}|{{matchingBraces}}|{{matchingParenthesis}}|{{matchingBrackets}}|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\<\>\,\.\[]|=>|&(?!&)|\|(?!\|)))
+  typeArgumentsStart: (((keyof|infer)\s+)|(({{identifier}}|{{matchingBraces}}|{{matchingParenthesis}}|{{matchingBrackets}}|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\<\>\,\.\[]|=>|&(?!&)|\|(?!\|)))))
   typeArgumentsInnerExpressionPart: '[^<>\(]|{{matchingParenthesis}}|(?<==)\>'
   typeArguments: '<\s*{{typeArgumentsStart}}({{typeArgumentsInnerExpressionPart}}|\<\s*{{typeArgumentsStart}}({{typeArgumentsInnerExpressionPart}})*(?!=)\>)*(?!=)>'
   functionCallLookup: \s*(\?\.\s*)?({{typeArguments}}\s*)?\(

TypeScript.tmLanguage

@@ -3621,9 +3621,9 @@
       <key>function-call</key>
       <dict>
         <key>begin</key>
-        <string>(?=(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
+        <string>(?=(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
         <key>end</key>
-        <string>(?&lt;=\))(?!(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
+        <string>(?&lt;=\))(?!(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
         <key>patterns</key>
         <array>
           <dict>
@@ -3632,7 +3632,7 @@
             <key>begin</key>
             <string>(?=(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*))</string>
             <key>end</key>
-            <string>(?=\s*(\?\.\s*)?(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
+            <string>(?=\s*(\?\.\s*)?(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
             <key>patterns</key>
             <array>
               <dict>

TypeScriptReact.tmLanguage

@@ -3625,9 +3625,9 @@
       <key>function-call</key>
       <dict>
         <key>begin</key>
-        <string>(?=(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
+        <string>(?=(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
         <key>end</key>
-        <string>(?&lt;=\))(?!(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
+        <string>(?&lt;=\))(?!(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*)\s*(\?\.\s*)?(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
         <key>patterns</key>
         <array>
           <dict>
@@ -3636,7 +3636,7 @@
             <key>begin</key>
             <string>(?=(([_$[:alpha:]][_$[:alnum:]]*\s*\??\.\s*)*|(\??\.\s*)?)([_$[:alpha:]][_$[:alnum:]]*))</string>
             <key>end</key>
-            <string>(?=\s*(\?\.\s*)?(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
+            <string>(?=\s*(\?\.\s*)?(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;\s*)?\()</string>
             <key>patterns</key>
             <array>
               <dict>
@@ -7409,9 +7409,9 @@
         <string>(?x)
   (?&lt;!\+\+|--)(?&lt;=[({\[,?=&gt;:*]|&amp;&amp;|\|\||\?|^return|[^\._$[:alnum:]]return|^default|[^\._$[:alnum:]]default|^)\s*
   (?!&lt;\s*[_$[:alpha:]][_$[:alnum:]]*((\s+extends\s+[^=&gt;])|,)) # look ahead is not type parameter of arrow
-  (?=(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;))</string>
+  (?=(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;))</string>
         <key>end</key>
-        <string>(?!(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;))</string>
+        <string>(?!(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;))</string>
         <key>patterns</key>
         <array>
           <dict>
@@ -7425,7 +7425,7 @@
         <key>name</key>
         <string>meta.tag.tsx</string>
         <key>begin</key>
-        <string>(?=(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;))</string>
+        <string>(?=(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;))</string>
         <key>end</key>
         <string>(/&gt;)|(?:(&lt;/)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))?\s*(&gt;))</string>
         <key>endCaptures</key>
@@ -7470,7 +7470,7 @@
         <array>
           <dict>
             <key>begin</key>
-            <string>(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;)</string>
+            <string>(&lt;)\s*(?:([_$a-zA-Z][-$\w.]*)(?&lt;!\.|-)(:))?((?:[a-z][a-z0-9]*|([_$a-zA-Z][-$\w.]*))(?&lt;!\.|-))(?=(&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;|\&lt;\s*(((keyof|infer)\s+)|(([_$[:alpha:]][_$[:alnum:]]*|(\{([^\{\}]|(\{[^\{\}]*\}))*\})|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(\[([^\[\]]|(\[[^\[\]]*\]))*\])|(\'[^\']*\')|(\"[^\"]*\")|(\`[^\`]*\`))(?=\s*([\&lt;\&gt;\,\.\[]|=&gt;|&amp;(?!&amp;)|\|(?!\|)))))([^&lt;&gt;\(]|(\(([^\(\)]|(\([^\(\)]*\)))*\))|(?&lt;==)\&gt;)*(?!=)\&gt;)*(?!=)&gt;)?\s+(?!\?)|\/?&gt;)</string>
             <key>beginCaptures</key>
             <dict>
               <key>1</key>

tests/baselines/Issue598.baseline.txt

@@ -0,0 +1,26 @@
+original file
+-----------------------------------
+f<keyof I>();
+-----------------------------------
+
+Grammar: TypeScript.tmLanguage
+-----------------------------------
+>f<keyof I>();
+ ^
+ source.ts meta.function-call.ts entity.name.function.ts
+  ^
+  source.ts meta.type.parameters.ts punctuation.definition.typeparameters.begin.ts
+   ^^^^^
+   source.ts meta.type.parameters.ts keyword.operator.expression.keyof.ts
+        ^
+        source.ts meta.type.parameters.ts
+         ^
+         source.ts meta.type.parameters.ts entity.name.type.ts
+          ^
+          source.ts meta.type.parameters.ts punctuation.definition.typeparameters.end.ts
+           ^
+           source.ts meta.brace.round.ts
+            ^
+            source.ts meta.brace.round.ts
+             ^
+             source.ts punctuation.terminator.statement.ts

tests/cases/Issue598.ts

@@ -0,0 +1 @@
+f<keyof I>();