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A comment on ES6 in Depth – Symbols. Parent comment

Re:ES6 in Depth – Symbols by pavlov on Friday June 12, 2015 @09:47AM (#9705797)
Making the registry global allows compilers to optimize away those Symbol.for() calls, since they know that each call to Symbol.for("cat") is going to resolve to the same symbol instance.
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Re:ES6 in Depth – Symbols by agd on Friday June 12, 2015 @10:09AM (#9705949)
But if people are concerned about performance, they can just pre-allocate/memoize the symbols.

It doesn't seem like the registry adds any new functionality, and it might encourage use of globals. Surely that's a bad thing?

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