Topics: General, Language Specification
Jun 22, 2013 at 8:13 AM
Edited Jun 23, 2013 at 9:00 PM
It is often necessary to annotate a class, a class property, or methods, in Javascript you generally do it like this :
function myAnnotation(type, property) {
// do something

function MyClass() {


This often leads in bugs when you misspell 'myProperty'.
In typescript you already define property in the class declaration, it could create a way to have a more concise syntax, and eliminates such bug to have a mechanism like this one :
function myAnnotation(type, property) {

class MyClass {
Jun 24, 2013 at 3:56 PM
There have been some experiments in this real under the 'decorators' fork ( You should feel free to try out the branch and give the author feedback. He does a lot of language experiments, and they're fun to hear about.

There are some nice advantages to the decorators, and we're just beginning to explore them.