Mixin to min-max anything

// Min / Max http://www.sassmeister.com/gist/7f22e44ace49b5124eec
@mixin minmax(
	$size-min,
	$size-max,
	$properties: font-size,
	$vw-min: 320px,
	$vw-max: 1280px
	) {
	@if(
		unitless($size-min) or
		unitless($size-max) or
		unitless($vw-min) or
		unitless($vw-max)
	) {
		@error "All min and max properties must be provided with a unit (e.g.: px)";
	}
	@if(
		unit($size-min) == unit($size-max) and
		unit($size-min) == unit($vw-min) and
		unit($size-min) == unit($vw-max)
	) {
		@each $property in $properties {
			#{$property}: $size-min;
		}
		@media screen and (min-width: $vw-min) {
			@each $property in $properties {
				#{$property}: calc(#{$size-min} + #{strip-unit($size-max - $size-min)} * (100vw - #{$vw-min}) / #{strip-unit($vw-max - $vw-min)});
			}
		}
		@media screen and (min-width: $vw-max) {
			@each $property in $properties {
				#{$property}: $size-max;
			}
		}
	} @else {
		@error "All units must be the same. Incompatible units were passed:
		#{unit($size-min)}, #{unit($size-max)}, #{unit($vw-min)},
		#{unit($vw-max)}";
	}
}
// https://css-tricks.com/snippets/sass/strip-unit-function/
@function strip-unit($number) {
	@if type-of($number) == 'number' and not unitless($number) {
		@return $number / ($number * 0 + 1);
	}
	@return $number;
}

USAGE:
@include minmax(36px, 42px, font-size);
@include minmax(240px, 360px, width);