The Mozilla Sourcemap library is a brilliant project from Mozilla to help with sourcemaps in the browser. This project has the compiled distribution files from the official repo, along with an AngularJS app.
This will not actually generate SourceMaps for your javascript files. Instead, when an error occurs from with an Angular controller or a TypeScript library, the AngularJS exception report will include the original source mapping.
bower install https://github.com/markwylde/angular-sourcemaps.git
** Sorry, I will get this added to bower properly soon
git clone https://github.com/markwylde/angular-sourcemaps.git
<script src="angular-sourcemaps/dist/angular-sourcemaps.min.js"></script>
<script src="angular-sourcemaps/dist/source-map.min.js"></script>
angular.module('myApp', [
'angular-sourcemaps'
])