In the past, I tried to create some proof of concepts with svelte, but I usually ended up missing some of the features that RxJS provides. Now that I know that they complement each other well, I will grab this combination more often

my second preference would be for let, probably #let expr as name for consistency with #each.

Note that interacting with these <input> elements will mutate the array. If you prefer to work with immutable data, you should avoid these bindings and use event handlers instead.