mixin line-height custom magento 2

_typography-line-height.less

//  line height
.lib-line-height(@heightValue) when not (@heightValue = false) and not (@heightValue = normal) and not (ispercentage(@heightValue)) {
    .lib-css(line-height, @heightValue);
}

.lib-line-height(@heightValue) when (ispercentage(@heightValue)) and not (@heightValue = false) {
    .lib-css(line-height, @line-height__base);
}

.lib-line-height(@heightValue) when (@heightValue = normal) {
    .lib-css(line-height, @heightValue);
}