Errors with SymbolShim in some browsers

[benlesh]

According the the Angular core Slack, there is an issue in some browsers when trying to call Symbol.for. Namely in Safari 8 and all versions of IE.

I haven't reproduced this yet, but I can see/understand where the issue is. Such is the danger with DIY polyfills.

You can see that Symbol is supported in more browsers than Symbol.for is.

[luisgabriel]

It seems to be the same problem as #988.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.