== should output without param ==
try{
    a;
} catch
{
    b;
}

[expect]
try {
    a;
} catch {
    b;
}

== should output with param ==
try{
    a;
}
catch(ex){
    b;
}

[expect]
try {
    a;
} catch (ex) {
    b;
}

== should output with type on param ==
try {
    a
} catch (  ex    :unknown ) {
}

[expect]
try {
    a;
} catch (ex: unknown) {
}