React.js - native examples of react and other libraries for optimizing array searches

Let's assume we have a very large array. This array also contains other arrays, including large ones.

It may take several tens of seconds to go through this.

I would like:

- code that creates such an array for testing. And a demonstration with react dev tools that the query takes this long

- then use e.g. react memo, and show with example code how going through a given array is faster

- the same with some other memoization tools, with sample code so that the "junior" person could easily understand and test it

- each example is to be described and finally the tools are compared.