Paolo Emilio Mattio

The runtime need to has the visitor for the let and const statements. For this implementation please check this [link ](https://www.ecma-international.org/ecma-262/6.0/index.html#sec-let-and-const-declarations) related to current supported specification. ### Examples of errors...

The runtime need to has the visitor for the spread operator. ``` var str = "foo"; var chars = [ ...str ]; // [ "f", "o", "o" ] ```

The runtime need to has the visitor for template literals. ``` var customer = { name: "Foo" }; var card = { amount: 7, product: "Bar", unitprice: 42 }; var...

The runtime need to has the visitor for destructuring assignment. For this implementation please check this [link ](https://www.ecma-international.org/ecma-262/6.0/index.html#sec-destructuring-assignment)related to current supported specification.

The runtime need to has the visitor for the Map and Set objects. For this implementation please check [these](https://www.ecma-international.org/ecma-262/6.0/index.html#sec-map-objects) [links](https://www.ecma-international.org/ecma-262/6.0/index.html#sec-set-objects) related to current supported specification.