Dynamic scale for sass

scale.scss

//https://stackoverflow.com/questions/58069059/dynamic-spacing-classes-with-sass
@function fibonacci($n){
    @if $n == 0{
        @return 0;
    } @else if $n == 1 or $n == 2{
        @return 1;
    }
    @return fibonacci($n - 1) + fibonacci($n - 2);
}

@function range($fn, $to,$from: 1, ){
    $list: [];
    @for $i from $from through $to {
        $list: append($list, call(get-function(fibonacci), $i));
    }
    @return $list;
}

@mixin generate() {
    $sizes: range(fibonacci,$from: 10,$to: 12);
    $sizes: append($sizes, 0);
    @debug $sizes;
    $spacing: 1rem;
    $directions: ('left':'l', 'right':'r', 'top':'t', 'bottom':'b');
    $properties: ('padding':'p', 'margin':'m');
    @each $plong, $pshort in $properties {
        @for $i from 1 through length($sizes) {
            $size: nth($sizes, $i);
            @each $dlong, $dshort in $directions {
                .#{$pshort}#{$dshort}-#{$i - 1} {
                    #{$plong}-#{$dlong}: $spacing * $size;
                }
            }
            .#{$pshort}x-#{$i - 1} {
                #{$plong}-left: $spacing * $size;
                #{$plong}-right: $spacing * $size;
            }
            .#{$pshort}y-#{$i - 1} {
                #{$plong}-top: $spacing * $size;
                #{$plong}-bottom: $spacing * $size;
            }
            .#{$pshort}-#{$i - 1} {
                #{$plong}: $spacing * $size;
            }
        }
    }
}