fix(no-undefined-types): surface jsdoctypeparser update to avoid errors with empty variadic argument; closes #419

Also removes some code from `check-types` which had only been needed absent the fix (and which now would otherwise be causing coverage failure)

Author: brettz9

package.json

@@ -7,7 +7,7 @@
   "dependencies": {
     "comment-parser": "^0.7.0",
     "debug": "^4.1.1",
-    "jsdoctypeparser": "^5.1.1",
+    "jsdoctypeparser": "^6.0.0",
     "lodash": "^4.17.15",
     "object.entries-ponyfill": "^1.0.1",
     "regextras": "^0.6.1"

src/rules/checkTypes.js

@@ -128,9 +128,6 @@ export default iterateJsdoc(({
     };
 
     traverse(typeAst, (node, parentName, parentNode) => {
-      if (!node) {
-        return;
-      }
       const {type, name} = node;
       if (!['NAME', 'ANY'].includes(type)) {
         return;