Fix: missing parameters in TSFunctionType

Author: armano2

visitor-keys.js

@@ -48,7 +48,7 @@ module.exports = Evk.unionWith({
     TSInterfaceBody: ["body"],
     TSInterfaceDeclaration: ["body", "id", "heritage", "typeParameters"],
     TSInterfaceHeritage: ["id", "typeParameters"],
-    TSFunctionType: ["typeAnnotation"],
+    TSFunctionType: ["typeAnnotation", "parameters"],
     TSMethodSignature: ["typeAnnotation", "typeParameters", "key", "params"],
     TSModuleBlock: ["body"],
     TSModuleDeclaration: ["id", "body"],