Using typescript@next nightly package? Don’t rely on –save-dev to be up-to-date!
Just a small update for all you cutting edge TypeScript users. If you are using typescript@next NPM package as showed here : http://blogs.msdn.com/b/typescript/archive/2015/07/27/introducing-typescript-nightlies.aspx you may run into the same issue as we did @ work. If you would install TypeScript nightly as blog says like…