Обработка строки после перевода

[GreenEyeInvestor]

Everything is really cool and I'm glad that I found such a library, so thank you very much.
The only thing I'm missing is a kind of post-processing of the translation, which is what I mean.

I have translation keys with something like this content

{
    "name": "Hello %{name} %{user}, some kind of text..."
}

t("name", {name, user})
For example, the name variable may be missing and as a result we get a string of the following type

Hello USER, some kind of text...

After Hello there are 2 spaces
At some points, there may be a space before the dot, or something else, all these are special cases.
I have to resort to something like this option
t("name", {name, user})?.replace(/ +/g, " ")?.trim()
Which allows you to remove double problems, etc.

What should be done in such cases?