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toshok / echojs

an ahead of time compiler and runtime for ES6

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Sparse Array objects impl

carlosalberto opened this issue · comments

commented

It looks like SpiderMonkey, in the case of sparse arrays, fallbacks to simple property access* (i.e. arr[450] gets the '450' property, if any).

Wouldn't that work here for now, instead of creating a huge array? (for arrays > SOME_HUGE_VALUE, that is).

  • It looks like SP uses some checks here and there to detect this case, based on the use-case.