just VS micro-memoize

just-diff

You can roll your own or use a utility library. A simple zero-dependency library would be something like just-group-by [1]. Although I now prefer remeda [2] as it seems to have the best typescript support, especially the strict variants such as `grouBy.strict`.

[1] https://github.com/angus-c/just#just-group-by

Tree-shaking doesn't help much when the tree-shaken implementation is so bloated.

Here's the one you referenced, lodash.chunk: https://unpkg.com/lodash.chunk – 140 lines after removing comments and whitespace.

That's pretty small compared to a lot of the lodash utilities. Try spot-checking a few on unpkg.

I prefer angus's `just` utilities: https://github.com/angus-c/just

I absolutely love this. When I need some Lodash alternative I'll usually reference angus-c/just but I am definitely bookmarking this for next time.

The just set of utility functions are really nice to use. https://github.com/angus-c/just

Just doesn't have everything but it's pretty good

One of my favourite "libraries" are the "just" packages, where each part of the library is it's own simple package with zero dependencies (https://github.com/angus-c/just) so you essentially just npm install the specific thing you want - which is generally a single function.

If the code should, as you say, be 5 lines, why take on a dependency at all? By doing so, you end up with a catch-all solution that does almost nothing other than JSON.stringify your args, which is extremely poorly optimized to handle many situations, e.g. one of your args is a primitive and the other is a large config object.

The author has also published a bare-bones version called micro-memoize. If you care about bundle size and don't need any bells and whistles, this is likely your best bet. If you do end up going that route, watch out for the default maxSize of 1, meaning unless you specify otherwise, it will only store the most recent result in the cache.