file size limit of modules

[espruino-discuss]

Posted at 2015-10-31 by tsbht

Is there an estimated file size limit of all modules loaded into memory or a maximum amount of modules that will be interpreted in any single application? Considering that each variable takes a certain amount of memory, certain modules may do more computation that actually defining variables/functions to consume that memory and can be garbage collected clearing the memory. In other words, is there a way to calculate the lowest required memory overhead to just load and interpret a module, granted that module is minimized and minified as much as possible and all other performance best practices have been utilized?

[gfwilliams]

Posted at 2015-11-02 by @gfwilliams

I think it's a bit too complex for that...

As a rule of thumb, expect to be able to store 12 characters for each 'JsVar' reported by process.memory, so if you have 5000 variables then that's 60,000 characters.

But in order to actually load a module, you have to be able to send it as a string, unescape that string, and then convert that to real functions in memory - so realistically each module needs 3 times that to load - even if once loaded it'll only use about the original amount of memory.

... so actually you could load more into Espruino if you had a few smaller modules than if you had one large one.

Hope that helps!