Closure compiler warnings

[kwonoj]

This might not be big issue..

after PR #664, closure compiler gives warning like below

./dist/global/Rx.js:7401: WARNING - Keywords and reserved words are not allowed as unquoted property names in older versions of JavaScript. If you are targeting newer versions of JavaScript, set the appropriate language_in option.
    if (typeof root_1.root.Symbol.for === 'function') {

Assume some of generated codes are not supported old version of runtime.

[benlesh]

No, I think it has to do with our Symbol polyfills. We're setting up Symbol.for and it wants us to set up Symbol['for']. We can do that, it's not a high priority though.

[robwormald]

it also doesn't like .do, .throw, etc. Meh.

[benlesh]

Yeah... switch, do, throw, for etc.

[kwonoj]

Related with #733, if we're targeting IE9+ which supports ES5 (http://kangax.github.io/compat-table/es5/), what about suppress this warning for ES3 (https://github.com/google/closure-compiler/wiki/FAQ#i-get-invalid-property-id-errors-but-it-works-on-firefox) by targeting closure compiler to ES5?

[benlesh]

what about suppress this warning for ES3 (https://github.com/google/closure-compiler/wiki/FAQ#i-get-invalid-property-id-errors-but-it-works-on-firefox) by targeting closure compiler to ES5?

I'm fine with that.