blog/themes/embark/source/css/00-functions/_functions.get-font-size.scss

/// Font size
/// Get the size of a font
/// @group Font
/// @param {string} $key
@function get-font-size($key) {
  @if map-has-key($fontSize, $key) {
    @return map-get($fontSize, $key);
  }

  @warn "The key #{$key} is not in the map ’$fontSize’";
  @return null;
}