build(npm): update rxjs to 2.0.0-beta.6

[jeffbcross]

Note: this contains two commits from #8003 to make sure Travis will be green.

[jeffbcross]

I think I need to fix a couple of typings in http

[jeffbcross]

There are obscure Travis failures in environments I don't have time to troubleshoot right now, so please don't merge this unless someone can make it green.

[jeffbcross]

I'm going to try reproducing and fixing the Windows and Safari issues now

[jeffbcross]

@Blesh had the idea that our Symbol problems are probably the result of RxJS no longer polyfilling Symbol as it did in beta.2, and our code in facade/lang.ts was assuming that Symbol had been polyfilled when calling isPresent(Symbol) in lang.ts:

angular/modules/angular2/src/facade/lang.ts

Line 454 in cc86fee

if (isPresent(Symbol) && isPresent(Symbol.iterator)) {

I changed that line to if ('Symbol' in globalScope && isPresent(Symbol.iterator)) {

[jeffbcross]

Got verbal LGTM from @alxhub

@robertmesserle this will require updating internal version of Rx, which I can help with. It'd be great to get this landed before our next beta release.

[benlesh]

@jeffbcross going forward, if you need to access Symbol.observable you'll want to use this module: https://www.npmjs.com/package/symbol-observable

[rkirov]

This is blocked on google internal ts1.9 upgrade. Will revisit after ng-conf.

[benlesh]

Just noticed this:

update rxjs to 2.0.0-beta.6

That would be a 3 major version downgrade.

[jeffbcross]

I'm going to rebase and get this thing ready for merge. We're not going to wait on G3. This is blocking some offline compiler work now.

[jeffbcross]

Thx @Blesh fixed commit message :)

[jeffbcross]

READY TO MERGE!

[mary-poppins]

Merging PR #8047 on behalf of @rkirov to branch presubmit-rkirov-pr-8047.

[PatrickJS]

:

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