In fact, only Chrome and Edge made it through.

As far as I can see, 2 issues are causing this in both unit tests and examples:

1. Firefox: Error: Expected int32 as second argument in c:/Dev/angular_mlaval/node_modules/es6-shim/es6-shim.js (line 1101)
   This is a known issue in es6-shim: Expected int32 as second argument in Firefox with Array.prototype.map paulmillr/es6-shim#347
   It comes from an actual bug in Firefox, which was apparently fixed in Firefox Nightly.

2. All other broken browsers: es6-shim doesn't polyfill Symbol and we have a few occurence of Symbol.iterator in the framework.
   Internally, es6-shim uses a string if it doesn't exist, but doesn't expose it.
   Issue opened for that: Expose Symbol.iterator paulmillr/es6-shim#360