Adding new eslint checks:

* no-sequences
 * no-throw-literal

src/librustdoc/html/static/.eslintrc.js

@@ -89,5 +89,7 @@ module.exports = {
         "no-multi-assign": "error",
         "no-return-assign": "error",
         "no-script-url": "error",
+        "no-sequences": "error",
+        "no-throw-literal": "error",
     }
 };