calling method in superclass

6to5_output.txt

//output
repl: Line 30: Direct super call is illegal in non-constructor, use super.doWork() instead
  28   | 
  29   |   doWork() {
> 30   |     let person = super();
       |                  ^
  31   |     return `${person} paid`;
  32   |   }
  33   | }

//generated javascript
"use strict";

var _prototypeProperties = function (child, staticProps, instanceProps) { if (staticProps) Object.defineProperties(child, staticProps); if (instanceProps) Object.defineProperties(child.prototype, instanceProps); };

var Employee = (function () {
  function Employee(name) {
    this._name = name;
  }

  _prototypeProperties(Employee, null, {
    name: {
      get: function () {
        return this._name;
      },
      set: function (newValue) {
        this._name = newValue;
      },
      configurable: true
    }
  });

  return Employee;
})();

var greg = new Employee("greg");
console.log(greg.name);

greg.name = "test";
console.log(greg.name);

calling_superclass.es.js

// es6 javascript

class Person {
  constructor(name) {
    this._name = name;
  }
  
  get name() {
  	return this._name;
  }

  set name(newValue) {
    this._name = newValue;
  }

  doWork() {
    return "free";
  }
}

class Employee extends Person {
  constructor(name, title) {
    super(name);
    this.title = title;
  }
  
  set title(newTitle) {
    this._title = newTitle;
  }

  doWork() {
    let person = super();
    return `${person} paid`;
  }
}
  
let alex = new Person("alex");
let greg = new Employee("greg", "dev");

console.log(alex.doWork());
console.log(greg.doWork());

traceur_output.txt

//output
free
undefined paid

// generated javascript
$traceurRuntime.ModuleStore.getAnonymousModule(function() {
  "use strict";
  var Person = function Person(name) {
    this._name = name;
  };
  ($traceurRuntime.createClass)(Person, {
    get name() {
      return this._name;
    },
    set name(newValue) {
      this._name = newValue;
    },
    doWork: function() {
      return "free";
    }
  }, {});
  var Employee = function Employee(name, title) {
    $traceurRuntime.superConstructor($Employee).call(this, name);
    this.title = title;
  };
  var $Employee = Employee;
  ($traceurRuntime.createClass)(Employee, {
    set title(newTitle) {
      this._title = newTitle;
    },
    doWork: function() {
      var person = $traceurRuntime.superConstructor($Employee).call(this);
      return (person + " paid");
    }
  }, {}, Person);
  var alex = new Person("alex");
  var greg = new Employee("greg", "dev");
  console.log(alex.doWork());
  console.log(greg.doWork());
  return {};
});
//# sourceURL=traceured.js

6to5 gave a better error message