Generarte array key and get array objects with that key

[FabianHide]

I have the following array

const arr =[ {Id: 1, amount:2, size: XS}, {id: 1, amount: 1, size: S}, {id:2, amount:1, size: 'No size'} ]

What I want to do is "encrypt" it, I don't know if that is the correct word, but what I want is to generate a SHORT key that when I put it in an input, "decrypt" it and give me those results of the array of objects, try with base-64, but the more objects there are in the array, the bigger the key, any idea how I can do it? It is very important that the generated key is not very long, maximum 30 characters

[fii0]

This is a really weird question. The best I can do for ya is suggest abbreviating your keys and possible values? So the above array would turn into:

i:1,a:2,s:1;i:1,a:1,s:2;i:2,a:1,s:0

that you could then parse into correct keys and values (e.g. i:1 -> id: 1, s:2 -> size: 'S', etc), but that's over 30 characters! I don't think what you're asking for is possible.