previousBreakpoint method
Get the previous smaller breakpoint
Implementation
FSBreakpoint? previousBreakpoint(FSBreakpoint current) {
final values = [
FSBreakpoint.xs,
FSBreakpoint.sm,
FSBreakpoint.md,
FSBreakpoint.lg,
FSBreakpoint.xl,
FSBreakpoint.xxl
];
final index = values.indexOf(current);
return index > 0 ? values[index - 1] : null;
}