Error in http map function on beta.4

[iignatov]

Check this post (and make sure that you made all required updates to your project after updating to beta.4):

@iignatov

Assuming that you created a new JS project from scratch with the latest beta and then updated the files as in the workaround from the link that you provided, then I would suggest you to make sure that you imported es6-shim in app.js (see step 4 above), i.e. make sure to add the following line at the top of app.js:

import 'es6-shim';