How to use the Controller function from estraverse

sqltraverse.js

GitHub: jdrew1303/sqltraverse

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    traverse : estraverse.traverse,
    replace : estraverse.replace,
    attachComments : estraverse.attachComments,
    VisitorKeys : estraverse.VisitorKeys,
    VisitorOption : estraverse.VisitorOption,
    Controller : estraverse.Controller
};

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+ 3 other calls in file

parent.js

GitHub: datadvance/qooxdoo

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 *
 * @param {Object} tree - esprima AST
 * @see {@link http://esprima.org/doc/#ast|esprima AST}
 */
annotate: function(tree) {
  var controller = new estraverse.Controller();
  controller.traverse(tree, {
    enter : function (node, parent) {
      node[annotateKey] = parent;
    }

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