'''AtScript''' (now defunct) is a [[JavaScript]] based [[scripting language]] extending [[Microsoft]]'s [[Typescript]]. AtScriptIt iswas createdannounced by [[Google]], it was announced in late October 2014 at the [http://ngeurope.org/ ng-europe conference].
AtScript was created by Google's [[AngularJS]] team as the language of the upcoming AngularJS 2.0 web development framework.<ref>{{cite web|url=https://www.youtube.com/watch?v=lGdnh8QSPPk |title=Miško Hevery - Keynote on AtScript at ng-europe 2014 |publisher=YouTube |date=October 28, 2014 |accessdate=January 28, 2015}}</ref>
The public language specification is currently a [[Draft document|draft]].<ref>{{cite web|url=https://docs.google.com/document/d/11YUzC-1d0V1-Q3V0fQ7KSit97HnZoKVygDxpWzEYW0U/edit |title=AtScript Primer |publisher=Google Docs |accessdate=January 28, 2015}}</ref> It states that plain JavaScript code ([[ECMAScript|ES5 or ES6]]) is valid AtScript code., AtScriptas it is a [[superset]] of Microsoft's TypeScript. AtScript builds on ECMAScript 6 with types (through TypeScript), and extends it by [[Java annotation|annotations]] (type annotations, field annotations, metadata annotations) and type introspection. To sum up, AtScript is ECMAScript 6 with types, annotations and introspection.<ref>{{cite web|url=http://www.theregister.co.uk/2014/11/04/improving_javascript_google_throws_atscript_into_the_mix/ |title=Improving JavaScript: Google throws AtScript into the mix |date=Nov 4, 2014 |accessdate=January 28, 2015}}</ref>
The name “AtScript” comes from the @ (“at”) symbol used for annotations in many languages (Dart, Java) and the “script” word (as in JavaScript, TypeScript, CoffeeScript).
In March, 2015, the Angular team and Typescript blog announced that AtScript development iswas abandoned, and that features of AtScript willwould be implemented in TypeScript.<ref>{{cite web|url=https://www.youtube.com/watch?v=ihAeffWJEIc |title=State of 1 x - Pawel Kozlowski & Lucas Galfaso |publisher=YouTube |accessdate=March 5, 2015}}</ref><ref>{{cite web|url=http://blogs.msdn.com/b/typescript/archive/2015/03/05/angular-2-0-built-on-typescript.aspx |title=Angular 2: Built on TypeScript |publisher=Microsoft Corporation |accessdate=March 5, 2015}}</ref>
