Growing heaps are in progress, http://discourse.specifiction.org/t/request-for-comments-switching-resizing-heaps-in-asm-js/641 http://discourse.specifiction.or

Growing heaps are in progress, http://discourse.specifiction.org/t/request-for-comments-switching-resizing-heaps-in-asm-js/641 http://discourse.specifiction.org/t/request-for-comments-swi... (It's unclear how that would work with heaps shared between threads, but so are most issues regarding threads - still just fairly early experimentation there, last I heard.)