Fixed jsx parsing error

refs eslint/eslint#11018

Author: ota-meshi

package.json

@@ -51,6 +51,7 @@
   "devDependencies": {
     "@types/node": "^4.2.16",
     "@typescript-eslint/parser": "^1.11.0",
+    "acorn": "^7.0.0",
     "babel-eslint": "^10.0.2",
     "chai": "^4.1.0",
     "eslint": "^6.0.0",