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Typical soul-sucking bike-shedding disaster of an es-discuss thread https://esdiscuss.org/topic/extensible-destructuring-proposal …

.@swannodette Agreed. I really like this proposal. We were able to move from assuming Array to GetIterator(obj), this seems similar in form.

@leeb @swannodette Also agreed. I'm curious: Is there any sensible way to polyfill this? Does anyone polyfill for iterators now?

@BrandonBloom babel does, yes

@leeb Ah, seems like `loose` mode affects it: https://babeljs.io/repl/#?experimental=true&evaluate=true&loose=false&spec=false&code=var%20%5Bx%2C%20y%5D%20%3D%20point%3B … - I wonder what perf impact is.

@BrandonBloom Once/if Flow integration lands these types of things could be compiled with blazing compiled code performance @leeb

@sebmck @leeb Unless you do aggressive inlining, I'm skeptical that you'd get much benefit, since Flow needs to be conservative with types.

@BrandonBloom Combine strict types with inference and you've got an accurate representation of types and data structures in your code @leeb