Add support for keyof

Author: sheetalkamat

TypeScript.YAML-tmLanguage

@@ -925,6 +925,8 @@ repository:
     - include: '#typeof-operator'
     - name: keyword.operator.type.ts
       match: '[&|]'
+    - name: keyword.operator.expression.keyof.ts
+      match: (?<!\.|\$)\bkeyof\b(?!\$)
 
   type-function-return-type:
     name: meta.type.function.return.ts

TypeScript.tmLanguage

@@ -2755,6 +2755,12 @@
             <key>match</key>
             <string>[&amp;|]</string>
           </dict>
+          <dict>
+            <key>name</key>
+            <string>keyword.operator.expression.keyof.ts</string>
+            <key>match</key>
+            <string>(?&lt;!\.|\$)\bkeyof\b(?!\$)</string>
+          </dict>
         </array>
       </dict>
       <key>type-function-return-type</key>

TypeScriptReact.tmLanguage

@@ -2759,6 +2759,12 @@
             <key>match</key>
             <string>[&amp;|]</string>
           </dict>
+          <dict>
+            <key>name</key>
+            <string>keyword.operator.expression.keyof.tsx</string>
+            <key>match</key>
+            <string>(?&lt;!\.|\$)\bkeyof\b(?!\$)</string>
+          </dict>
         </array>
       </dict>
       <key>type-function-return-type</key>