fatArrowBlues.js

//the old way

var a= {
  aa: function() {
    return this;
  }
}

a.aa(); //a :)

//the new way

var b= {
  bb: () => this
}

b.bb(); //window :(
b.bb.call(b); //window :(
var c = {};
c.cc = b.bb
c.cc(); //window :(

var d = {};
Object.mixin(d, b);
d.bb(); //window :(

var e = {};
Object.assign(e, b);
e.bb(); //window :'(