Sharing a JavaScript implementation across realms

[Brendan Eich]

Before we go tl;dr on this topic, how about some data to back up the 
asserted problem size? Filip gently raised the question. How much memory 
does a realm cost in top open source engines? Fair question, empirical 
and (I think) not hard to answer. Burdened malloc/GC heap full cost, not 
net estimate from source analysis, would be best. Cc'ing Nick, who may 
already know. Thanks,

/be

David Bruant wrote:
> Why would a JS implementation *has to* be tied to a realm?