Mana nima sababdan JavaScriptda hamma o'zgaruvchilar heapda saqlanadi: chunki stackdagi joy function tugashi bilan tozalanadi (function ozi stackdan "pop" bo'ladi), closuredagi functionga esa u joy keyin ham kerak.

Manba:
https://exploringjs.com/deep-js/ch_environments.html#recursion-via-environments