That's a good point, but my post didn't have any grand point :) I was hoping other people to come up modern solutions to this same original problem. Even my s

That's a good point, but my post didn't have any grand point :) I was hoping other people to come up modern solutions to this same original problem. Even my solution is questionable, because it relies on generating new URLSearchParams with strings, if one wants to be secure the reduce should take URLSearchParams as accumulator and add the items there.