@function get-theme-map($name) { ... }@function get-theme-map($name) { 
  $has-key: map.has-key($themes, $name);
  $is-default: $name == settings.$default-theme;

  @if $has-key == false {
    @if $is-default == false {
      @warn "Theme '#{$name}' not found. Attempting to fallback to '#{settings.$default-theme}' theme";
      @return map.get($themes, settings.$default-theme);
    } @else {
      @error "Theme '#{$name}' not found.";
    }
  }

  @return map.get($themes, $name);
 }

@function flatten-map($map) { ... }@function flatten-map($map) { 
  $flat-map: ();

  @each $key, $value in $map {
    @if meta.type-of($value) == 'map' {
      $child-map: flatten-map($value);
      @each $child-key, $child-value in $child-map {
        $flat-map: map.set($flat-map, '#{$key}-#{$child-key}', $child-value);
      }
    } @else {
      $flat-map: map.set($flat-map, $key, $value);
    }
  }

  @return $flat-map;
 }

@function get-property-name($path...) { ... }@function get-property-name($path...) { 
  $property: '#{settings.$property-prefix}';

  @each $item, $i in $path {
    @if $item {
      $property: '#{$property}-#{$item}';
    }
  }

  @return $property;
 }

$property-prefix: '--chirp' !default;

$default-theme: 'base' !default;

$preferred-theme: $default-theme !default;

$baseline-font-size: 10px !default;