type Gauge = {
gauge_style: &[Style, null],
label: &[Span, null],
ratio: &f64,
style: &[Style, null],
use_unicode: &[bool, null]
};
val gauge: fn(
?#gauge_style: &[Style, null],
?#label: &[Span, null],
?#style: &[Style, null],
?#use_unicode: &[bool, null],
ratio: &f64
) -> Tui;