toNumberText function
Implementation
String toNumberText(int day) {
if (day == 11 || day == 12 || day == 13) {
return '${day}th';
}
switch (day % 10) {
case 1:
return '${day}st';
case 2:
return '${day}nd';
case 3:
return '${day}rd';
default:
return '${day}th';
}
}