fix(Utilities): sCSS bad inputs prevent a build and error messages ar…

…e displayed

ISSUES CLOSED: #1456

terminus-ui/scss/helpers/_layout.scss

@@ -62,7 +62,7 @@
   $padding: unquote((( $y / $x ) * 100) + '%');
 
   @if $x == null or $y == null {
-    @warn 'Both the x and y ratios must be passed in.';
+    @error 'Both the x and y ratios must be passed in.';
   }
 
   @if $pseudo {

terminus-ui/scss/helpers/_opposite-direction.scss

@@ -27,7 +27,7 @@
     @if map-has-key($direction-map, $direction) {
       $opposite-directions: append($opposite-directions, unquote(map-get($direction-map, $direction)));
     } @else {
-      @warn 'No opposite direction can be found for `#{$direction}`. Direction omitted.';
+      @error 'No opposite direction can be found for `#{$direction}`. Direction omitted.';
     }
   }
 

terminus-ui/scss/helpers/_shadows.scss

@@ -155,7 +155,7 @@ $material-elements: (
   $upper: nth($reference-shadows, length($reference-shadows));
 
   @if $elevation < 0 {
-    @warn 'Elevation is less than zero';
+    @error 'Elevation is less than zero';
   }
 
   @for $i from 1 to length($reference-shadows) {

terminus-ui/scss/helpers/_z-index.scss

@@ -30,7 +30,7 @@ $z-layers: (
   @if index($z-layers, $name) {
     @return (length($z-layers) - index($z-layers, $name)) + 1;
   } @else {
-    @warn 'There is no item "#{$name}" in this list; choose one of: #{$z-layers}';
+    @error 'There is no item "#{$name}" in this list; choose one of: #{$z-layers}';
     @return null;
   }
 }