import "package:easyjs/easyjs.dart";

main() {
  loadJS([
      "//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.6.0/underscore-min.js"
  ]).then((js){
    //Use the js object to convert Maps to JS Objects, It works with Iterables too.
    var jsObj = js({"test" : 1, "test2" : 5});

    //Call functions from the JS context and pass them Dart Functions
    var jsObj2 = js._.map(jsObj,js((val,arg,context) => val   1));

    print(jsObj2);

    print("My name is ${js.obj.name}");

    //As example here how you can create Classes and objects in the JS context from Dart.
    var MyJSClass = js((jthis,name) => jthis.name = name, withThis: true);

    //If you want to have acces the de "JS this", you must pass "true" to the named parameter "withThis" of the js object.
    //The "JS this" will be the first argument the function will receive.
    MyJSClass.prototype.sayName = js((jthis) => print("My name is ${jthis.name}"), withThis: true);

    //To create new js Objects, you need to pass the js Contructor and the arguments (as a list) to the js object.
    var myObj = js(MyJSClass,args: ["Jack"]);

    myObj.sayName();

    //It's quite flexible.
    js.square = js(doSquare);

    js.console.log(js.square(10));

    print(js.square(10));

    //Passing a String to the js object is equivalent to call js.eval.
    js("console.log('Hello from eval');");

  });
}


doSquare(value){
  return value * value;
}