Fix: add Literal type to visitorKeys (babel#562)

* Fix: add Literal type to visitorKeys
* Fix: use ./visitor-keys

Author: mysticatea

lib/parse-with-scope.js

@@ -1,13 +1,12 @@
 "use strict";
 
-const t = require("@babel/types");
+const visitorKeys = require("./visitor-keys");
 const analyzeScope = require("./analyze-scope");
 const parse = require("./parse");
 
 module.exports = function(code, options) {
   const ast = parse(code, options);
   const scopeManager = analyzeScope(ast, options);
-  const visitorKeys = t.VISITOR_KEYS;
 
   return { ast, scopeManager, visitorKeys };
 };

lib/visitor-keys.js

@@ -5,6 +5,7 @@ const ESLINT_VISITOR_KEYS = require("eslint-visitor-keys").KEYS;
 
 module.exports = Object.assign(
   {
+    Literal: ESLINT_VISITOR_KEYS.Literal,
     MethodDefinition: ["decorators"].concat(
       ESLINT_VISITOR_KEYS.MethodDefinition
     ),