On Thu, Dec 4, 2014 at 9:25 AM, Katelyn Gadd <[email protected]> wrote:
> The only way I can imagine to solve > this is to make really aggressive use of type information gathering > and/or bailouts in the runtime to identify every type used as a > weakmap key - at which point I suppose you would have to convert their > memory layout on the heap in order to ensure consistency, or support > two different memory layouts for the same type. > Yup, this is how it's done. In JavaScript every object can have new properties added to it at arbitrary times. http://jayconrod.com/posts/52/a-tour-of-v8-object-representation --scott
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