This is the code as it is stated in MXUI:
switch (type.toLowerCase()) {
case "decimal":
case "float":
return _118c(new Big(value), !! props.groups, "places" in props && props.places >= 0 ? props.places : -1, _119d);
case "currency":
return _118c(new Big(value), !! props.groups, "places" in props && props.places >= 0 ? props.places : 2, _119d);
case "autonumber":
case "integer":
case "long":
return _118c(new Big(value), !! props.groups, props.places || 0, _119d);
case "datetime":
return _1176(new Date(value), _116f.mixin({
selector: "date"
}, props), _119d);
case "boolean":
return mx.ui.translate("mxui.common", value);
default:
return value;
}
_118c is the number formatter, as far as I can read from this code you can pass two parameters groups and places