Does Sass have a switch function?

No there isn’t any supported switch statement in sass but if you only need to use the switch statement to tweak a variable, you can use sass maps in a switch statement sort of way.

Using SASS maps in place of a switch statement

$newVar: map-get((
    case_1_test_name : case_1_return_value,
    case_2_test_name : case_2_return_value,
), $testVar);

So here’s an example:

$vehicle: car;

$vehicleSeating: map-get((
    car : 4,
    bus : 20,
), $vehicle);

//$vehicleSeating = 4

The above example translated into if/else statements:

$vehicle: car;

@if ($vehicle == 'car') {
    $vehicleSeating: 4;
} @else if ($vehicle == 'bus'){
    $vehicleSeating: 20;
}

//$vehicleSeating = 4