You want a conditional expression in JavaScript ? you could use the ternary operator : you don't have to use it if you don't want to though;
x > 0 ? 'positive' :
x < 0 ? 'negative' :
'zero' match x {
0 => 'zero',
x if x > 0 => 'positive',
x if x < 0 => 'negative',
}It's published on npm and everything. It's small, a bit unpolished, maybe needs more docs, but it works pretty damn well if you ask me!