Class 
Stable Function
Class Export
export Class(clsDef: ClassDefinition) : Type<any>
Provides a way for expressing ES6 classes with parameter annotations in ES5. Basic Example var Greeter = ng.Class({
  constructor: function(name) {
    this.name = name;
  },

  greet: function() {
    alert('Hello ' + this.name + '!');
  }
});

is equivalent to ES6: class Greeter {
  constructor(name) {
    this.name = name;
  }

  greet() {
    alert('Hello ' + this.name + '!');
  }
}

or equivalent to ES5: var Greeter = function (name) {
  this.name = name;
}

Greeter.prototype.greet = function () {
  alert('Hello ' + this.name + '!');
}

Example with parameter annotations var MyService = ng.Class({
  constructor: [String, [new Optional(), Service], function(name, myService) {
    ...
  }]
});

is equivalent to ES6: class MyService {
  constructor(name: string, @Optional() myService: Service) {
    ...
  }
}

Example with inheritance var Shape = ng.Class({
  constructor: (color) {
    this.color = color;
  }
});

var Square = ng.Class({
  extends: Shape,
  constructor: function(color, size) {
    Shape.call(this, color);
    this.size = size;
  }
});

exported from @angular/core/index defined in @angular/core/src/util/decorators.ts

    
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