Allow - in currency

[irt-msummers]

How would you set the options(pre,post,number)? to allow entering in a negative currency -- I am using USD with 2 decimal places and would like to be able to enter in for example
-1.23 -> ($1.23) or -$1.23
and then also if possible have it as a toggle so + or - would remove or add the - or ()

1.23 would still generate $1.23

Not that it matters but I am doing this in svelte
Thanks