text: /* */ 
  "format global";
  "use strict";
  
  var _interopRequireWildcard = function (obj) { return obj && obj.__esModule ? obj : { "default": obj }; };
  
  var _interopRequire = function (obj) { return obj && obj.__esModule ? obj["default"] : obj; };
  
  exports.Identifier = Identifier;
  exports.__esModule = true;
  
  var levenshtein = _interopRequire(require("leven"));
  
  var messages = _interopRequireWildcard(require("../../../messages"));
  
  var metadata = {
    optional: true
  };
  
  exports.metadata = metadata;
  
  function Identifier(node, parent, scope, file) {
    if (!this.isReferenced()) return;
    if (scope.hasBinding(node.name)) return;
  
    // get the closest declaration to offer as a suggestion
    // the variable name may have just been mistyped
  
    var bindings = scope.getAllBindings();
  
    var closest;
    var shortest = -1;
  
    for (var name in bindings) {
      var distance = levenshtein(node.name, name);
      if (distance <= 0 || distance > 3) continue;
      if (distance <= shortest) continue;
  
      closest = name;
      shortest = distance;
    }
  
    var msg;
    if (closest) {
      msg = messages.get("undeclaredVariableSuggestion", node.name, closest);
    } else {
      msg = messages.get("undeclaredVariable", node.name);
    }
  
    //
  
    throw file.errorWithNode(node, msg, ReferenceError);
  }