System.register("ExistentialExpression", [], function() {
  "use strict";
  var __moduleName = "ExistentialExpression";
  function require(path) {
    return $traceurRuntime.require("ExistentialExpression", path);
  }
  "use strict";
  (function() {
    var Node = module.require("../Node").Node;
    function ExistentialExpression(argument) {
      Node.call(this);
      this.type = "ExistentialExpression";
      this.argument = argument;
      this.argument.parent = this;
    }
    ExistentialExpression.prototype = Object.create(Node);
    ExistentialExpression.prototype.codegen = function() {
      if (!Node.prototype.codegen.call(this)) {
        return;
      }
      var nullCoalescing0 = typeof this.argument.hasCallExpression === "function" ? this.argument.hasCallExpression() : void 0;
      var isArgumentCallExpression = nullCoalescing0 == null ? false : nullCoalescing0;
      this.argument = this.argument.codegen();
      if (isArgumentCallExpression) {
        var context = this.getContext();
        var id = {
          "type": "Identifier",
          "name": ExistentialExpression.getNextVariableName()
        };
        context.node.body.splice(context.position + (ExistentialExpression.existentialIndex - 2), 0, {
          "type": "VariableDeclaration",
          "declarations": [{
            "type": "VariableDeclarator",
            "id": id,
            "init": this.argument
          }],
          "kind": "let",
          "codeGenerated": true
        });
        this.argument = id;
      }
      var nullCheck = {
        "type": "BinaryExpression",
        "operator": "!==",
        "left": this.argument,
        "right": {
          "type": "Literal",
          "value": null,
          "raw": "null"
        }
      };
      this.type = "LogicalExpression";
      this.operator = "&&";
      this.left = {
        "type": "BinaryExpression",
        "operator": "!==",
        "left": {
          "type": "UnaryExpression",
          "operator": "typeof",
          "argument": this.argument,
          "prefix": true
        },
        "right": {
          "type": "Literal",
          "value": "undefined",
          "raw": "'undefined'"
        }
      };
      this.right = nullCheck;
      return this;
    };
    ExistentialExpression.prototype.hasCallExpression = function() {
      var nullCoalescing1 = typeof this.argument !== "undefined" && this.argument !== null && typeof this.argument.hasCallExpression === "function" ? this.argument.hasCallExpression() : void 0;
      return nullCoalescing1 == null ? false : nullCoalescing1;
    };
    ExistentialExpression.getNextVariableName = function() {
      if (!(typeof this.existentialIndex !== "undefined" && this.existentialIndex !== null)) {
        this.existentialIndex = 0;
      }
      return "existential" + this.existentialIndex++;
    };
    ExistentialExpression.resetVariableNames = function() {
      this.existentialIndex = 0;
    };
    exports.ExistentialExpression = ExistentialExpression;
  }());
  return {};
});
System.get("ExistentialExpression" + '');