diff --git a/examples/svgMeltedModules.php b/examples/svgMeltedModules.php
index 628654b71..da66a5398 100644
--- a/examples/svgMeltedModules.php
+++ b/examples/svgMeltedModules.php
@@ -71,7 +71,7 @@ class MeltedSVGQRCodeOutput extends QRMarkupSVG{
 		return $paths;
 	}
 
-	protected function moduleTransform(int $x, int $y, int $M_TYPE, int $M_TYPE_LAYER):string{
+	protected function moduleTransform(int $x, int $y, int $M_TYPE, int $M_TYPE_LAYER):string|null{
 		$bits     = $this->matrix->checkNeighbours($x, $y, null);
 		$check    = fn(int $all, int $any = 0):bool => ($bits & ($all | (~$any & 0xff))) === $all;
 
@@ -79,6 +79,10 @@ class MeltedSVGQRCodeOutput extends QRMarkupSVG{
 			? $this->darkModule($check, $this->options->inverseMelt)
 			: $this->lightModule($check, $this->options->inverseMelt);
 
+		if($template === ''){
+			return null;
+		}
+
 		$r = $this->options->meltRadius;
 
 		return sprintf($template, $x, $y, $r, (1 - $r), (1 - 2 * $r));
@@ -89,58 +93,58 @@ class MeltedSVGQRCodeOutput extends QRMarkupSVG{
 	 */
 	protected function darkModule(Closure $check, bool $invert):string{
 
-		switch(true){
+		return match(true){
 			// 4 rounded
-			case !$invert && $check(0b00000000, 0b01010101):
-			case  $invert && $check(0b00000000, 0b00000000):
-				return 'M%1$s,%2$s m0,%3$s v%5$s q0,%3$s %3$s,%3$s h%5$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$s h-%5$s q-%3$s,0 -%3$s,%3$sZ';
+			!$invert && $check(0b00000000, 0b01010101),
+			 $invert && $check(0b00000000, 0b00000000)
+				=> 'M%1$s,%2$s m0,%3$s v%5$s q0,%3$s %3$s,%3$s h%5$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$s h-%5$s q-%3$s,0 -%3$s,%3$sZ',
 
 			// 3 rounded
-			case $invert && $check(0b01000000, 0b00000000):  // 135
-				return 'M%1$s,%2$s m0,1 h%4$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$s h-%5$s q-%3$s,0 -%3$s,%3$sZ';
-			case $invert && $check(0b00000001, 0b00000000):  // 357
-				return 'M%1$s,%2$s v%4$s q0,%3$s %3$s,%3$s h%5$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$sZ';
-			case $invert && $check(0b00000100, 0b00000000):  // 571
-				return 'M%1$s,%2$s m1,0 v%4$s q0,%3$s -%3$s,%3$s h-%5$s q-%3$s,0 -%3$s,-%3$s v-%5$s q0,-%3$s %3$s,-%3$sZ';
-			case $invert && $check(0b00010000, 0b00000000):  // 713
-				return 'M%1$s,%2$s m1,1 h-%4$s q-%3$s,0 -%3$s,-%3$s v-%5$s q0,-%3$s %3$s,-%3$s h%5$s q%3$s,0 %3$s,%3$sZ';
+			 $invert && $check(0b01000000, 0b00000000) // 135
+			    => 'M%1$s,%2$s m0,1 h%4$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$s h-%5$s q-%3$s,0 -%3$s,%3$sZ',
+			 $invert && $check(0b00000001, 0b00000000) // 357
+			    => 'M%1$s,%2$s v%4$s q0,%3$s %3$s,%3$s h%5$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$sZ',
+			 $invert && $check(0b00000100, 0b00000000) // 571
+			    => 'M%1$s,%2$s m1,0 v%4$s q0,%3$s -%3$s,%3$s h-%5$s q-%3$s,0 -%3$s,-%3$s v-%5$s q0,-%3$s %3$s,-%3$sZ',
+			 $invert && $check(0b00010000, 0b00000000) // 713
+			    => 'M%1$s,%2$s m1,1 h-%4$s q-%3$s,0 -%3$s,-%3$s v-%5$s q0,-%3$s %3$s,-%3$s h%5$s q%3$s,0 %3$s,%3$sZ',
 
 			// 2 rounded
-			case !$invert && $check(0b00100000, 0b01010101): // 13
-			case  $invert && $check(0b00000000, 0b01110000):
-				return 'M%1$s,%2$s m0,1 h1 v-%4$s q0,-%3$s -%3$s,-%3$s h-%5$s q-%3$s,0 -%3$s,%3$sZ';
-			case !$invert && $check(0b10000000, 0b01010101): // 35
-			case  $invert && $check(0b00000000, 0b11000001):
-				return 'M%1$s,%2$s v1 h%4$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$sZ';
-			case !$invert && $check(0b00000010, 0b01010101): // 57
-			case  $invert && $check(0b00000000, 0b00000111):
-				return 'M%1$s,%2$s v%4$s q0,%3$s %3$s,%3$s h%5$s q%3$s,0 %3$s,-%3$s v-%4$sZ';
-			case !$invert && $check(0b00001000, 0b01010101): // 71
-			case  $invert && $check(0b00000000, 0b00011100):
-				return 'M%1$s,%2$s m1,1 v-1 h-%4$s q-%3$s,0 -%3$s,%3$s v%5$s q0,%3$s %3$s,%3$sZ';
+			!$invert && $check(0b00100000, 0b01010101), // 13
+			 $invert && $check(0b00000000, 0b01110000)
+				=> 'M%1$s,%2$s m0,1 h1 v-%4$s q0,-%3$s -%3$s,-%3$s h-%5$s q-%3$s,0 -%3$s,%3$sZ',
+			!$invert && $check(0b10000000, 0b01010101), // 35
+			 $invert && $check(0b00000000, 0b11000001)
+				=> 'M%1$s,%2$s v1 h%4$s q%3$s,0 %3$s,-%3$s v-%5$s q0,-%3$s -%3$s,-%3$sZ',
+			!$invert && $check(0b00000010, 0b01010101), // 57
+			 $invert && $check(0b00000000, 0b00000111)
+				=> 'M%1$s,%2$s v%4$s q0,%3$s %3$s,%3$s h%5$s q%3$s,0 %3$s,-%3$s v-%4$sZ',
+			!$invert && $check(0b00001000, 0b01010101), // 71
+			 $invert && $check(0b00000000, 0b00011100)
+				=> 'M%1$s,%2$s m1,1 v-1 h-%4$s q-%3$s,0 -%3$s,%3$s v%5$s q0,%3$s %3$s,%3$sZ',
 			// diagonal
-			case  $invert && $check(0b01000100, 0b00000000):  // 15
-				return 'M%1$s,%2$s m0,1 h%4$s q%3$s,0 %3$s,-%3$s v-%4$s h-%4$s q-%3$s,0 -%3$s,%3$sZ';
-			case  $invert && $check(0b00010001, 0b00000000):  // 37
-				return 'M%1$s,%2$s h%4$s q%3$s,0 %3$s,%3$s v%4$s h-%4$s q-%3$s,0 -%3$s,-%3$sZ';
+			 $invert && $check(0b01000100, 0b00000000) // 15
+			    => 'M%1$s,%2$s m0,1 h%4$s q%3$s,0 %3$s,-%3$s v-%4$s h-%4$s q-%3$s,0 -%3$s,%3$sZ',
+			 $invert && $check(0b00010001, 0b00000000) // 37
+			    => 'M%1$s,%2$s h%4$s q%3$s,0 %3$s,%3$s v%4$s h-%4$s q-%3$s,0 -%3$s,-%3$sZ',
 
 			// 1 rounded
-			case !$invert && $check(0b00101000, 0b01010101): // 1
-			case  $invert && $check(0b00000000, 0b01111100):
-				return 'M%1$s,%2$s m0,1 h1 v-1 h-%4$s q-%3$s,0 -%3$s,%3$sZ';
-			case !$invert && $check(0b10100000, 0b01010101): // 3
-			case  $invert && $check(0b00000000, 0b11110001):
-				return 'M%1$s,%2$s h%4$s q%3$s,0 %3$s,%3$s v%4$s h-1Z';
-			case !$invert && $check(0b10000010, 0b01010101): // 5
-			case  $invert && $check(0b00000000, 0b11000111):
-				return 'M%1$s,%2$s h1 v%4$s q0,%3$s -%3$s,%3$s h-%4$sZ';
-			case !$invert && $check(0b00001010, 0b01010101): // 7
-			case  $invert && $check(0b00000000, 0b00011111):
-				return 'M%1$s,%2$s v%4$s q0,%3$s %3$s,%3$s h%4$s v-1Z';
-			default:
-				// full square
-				return 'M%1$s,%2$s h1 v1 h-1Z';
-		}
+			!$invert && $check(0b00101000, 0b01010101), // 1
+			 $invert && $check(0b00000000, 0b01111100)
+				=> 'M%1$s,%2$s m0,1 h1 v-1 h-%4$s q-%3$s,0 -%3$s,%3$sZ',
+			!$invert && $check(0b10100000, 0b01010101), // 3
+			 $invert && $check(0b00000000, 0b11110001)
+				=> 'M%1$s,%2$s h%4$s q%3$s,0 %3$s,%3$s v%4$s h-1Z',
+			!$invert && $check(0b10000010, 0b01010101), // 5
+			 $invert && $check(0b00000000, 0b11000111)
+				=> 'M%1$s,%2$s h1 v%4$s q0,%3$s -%3$s,%3$s h-%4$sZ',
+			!$invert && $check(0b00001010, 0b01010101), // 7
+			 $invert && $check(0b00000000, 0b00011111)
+				=> 'M%1$s,%2$s v%4$s q0,%3$s %3$s,%3$s h%4$s v-1Z',
+			// full square
+			default
+				=> 'M%1$s,%2$s h1 v1 h-1Z',
+		};
 
 	}
 
@@ -149,58 +153,58 @@ class MeltedSVGQRCodeOutput extends QRMarkupSVG{
 	 */
 	protected function lightModule(Closure $check, bool $invert):string{
 
-		switch(true){
+		return match(true){
 			// 4 rounded
-			case !$invert && $check(0b11111111, 0b01010101):
-			case  $invert && $check(0b10101010, 0b01010101):
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sz m-1,0 v-%3$s q0,%3$s %3$s,%3$sZ';
+			!$invert && $check(0b11111111, 0b01010101),
+			 $invert && $check(0b10101010, 0b01010101)
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sz m-1,0 v-%3$s q0,%3$s %3$s,%3$sZ',
 
 			// 3 rounded
-			case !$invert && $check(0b10111111, 0b00000000):  // 135
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sZ';
-			case !$invert && $check(0b11111110, 0b00000000):  // 357
-				return 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sz m-1,0 v-%3$s q0,%3$s %3$s,%3$sZ';
-			case !$invert && $check(0b11111011, 0b00000000):  // 571
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m0,1 v-%3$s q0,%3$s %3$s,%3$sz m1,0 h-%3$s q%3$s,0 %3$s,-%3$sZ';
-			case !$invert && $check(0b11101111, 0b00000000):  // 713
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m0,1 v-%3$s q0,%3$s %3$s,%3$sz m1,-1 v%3$s q0,-%3$s -%3$s,-%3$sZ';
+			!$invert && $check(0b10111111, 0b00000000) // 135
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sZ',
+			!$invert && $check(0b11111110, 0b00000000) // 357
+				=> 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sz m-1,0 v-%3$s q0,%3$s %3$s,%3$sZ',
+			!$invert && $check(0b11111011, 0b00000000) // 571
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m0,1 v-%3$s q0,%3$s %3$s,%3$sz m1,0 h-%3$s q%3$s,0 %3$s,-%3$sZ',
+			!$invert && $check(0b11101111, 0b00000000) // 713
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m0,1 v-%3$s q0,%3$s %3$s,%3$sz m1,-1 v%3$s q0,-%3$s -%3$s,-%3$sZ',
 
 			// 2 rounded
-			case !$invert && $check(0b10001111, 0b01110000): // 13
-			case  $invert && $check(0b10001010, 0b01010101):
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,0 v%3$s q0,-%3$s -%3$s,-%3$sZ';
-			case !$invert && $check(0b00111110, 0b11000001): // 35
-			case  $invert && $check(0b00101010, 0b01010101):
-				return 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sZ';
-			case !$invert && $check(0b11111000, 0b00000111): // 57
-			case  $invert && $check(0b10101000, 0b01010101):
-				return 'M%1$s,%2$s m1,1 h-%3$s q%3$s,0 %3$s,-%3$sz m-1,0 v-%3$s q0,%3$s %3$s,%3$sZ';
-			case !$invert && $check(0b11100011, 0b00011100): // 71
-			case  $invert && $check(0b10100010, 0b01010101):
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m0,1 v-%3$s q0,%3$s %3$s,%3$sZ';
+			!$invert && $check(0b10001111, 0b01110000), // 13
+			 $invert && $check(0b10001010, 0b01010101)
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,0 v%3$s q0,-%3$s -%3$s,-%3$sZ',
+			!$invert && $check(0b00111110, 0b11000001), // 35
+			 $invert && $check(0b00101010, 0b01010101)
+				=> 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m0,1 h-%3$s q%3$s,0 %3$s,-%3$sZ',
+			!$invert && $check(0b11111000, 0b00000111), // 57
+			 $invert && $check(0b10101000, 0b01010101)
+				=> 'M%1$s,%2$s m1,1 h-%3$s q%3$s,0 %3$s,-%3$sz m-1,0 v-%3$s q0,%3$s %3$s,%3$sZ',
+			!$invert && $check(0b11100011, 0b00011100), // 71
+			 $invert && $check(0b10100010, 0b01010101)
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m0,1 v-%3$s q0,%3$s %3$s,%3$sZ',
 			// diagonal
-			case !$invert && $check(0b10111011, 0b00000000): // 15
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,1 h-%3$s q%3$s,0 %3$s,-%3$sZ';
-			case !$invert && $check(0b11101110, 0b00000000): // 37
-				return 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m-1,1 v-%3$s q0,%3$s %3$s,%3$sZ';
+			!$invert && $check(0b10111011, 0b00000000) // 15
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sz m1,1 h-%3$s q%3$s,0 %3$s,-%3$sZ',
+			!$invert && $check(0b11101110, 0b00000000) // 37
+				=> 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sz m-1,1 v-%3$s q0,%3$s %3$s,%3$sZ',
 
 			// 1 rounded
-			case !$invert && $check(0b10000011, 0b01111100): // 1
-			case  $invert && $check(0b10000010, 0b01010101):
-				return 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sZ';
-			case !$invert && $check(0b00001110, 0b11110001): // 3
-			case  $invert && $check(0b00001010, 0b01010101):
-				return 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sZ';
-			case !$invert && $check(0b00111000, 0b11000111): // 5
-			case  $invert && $check(0b00101000, 0b01010101):
-				return 'M%1$s,%2$s m1,1 h-%3$s q%3$s,0 %3$s,-%3$sZ';
-			case !$invert && $check(0b11100000, 0b00011111): // 7
-			case  $invert && $check(0b10100000, 0b01010101):
-				return 'M%1$s,%2$s m0,1 v-%3$s q0,%3$s %3$s,%3$sZ';
-			default:
-				// empty block
-				return '';
-		}
+			!$invert && $check(0b10000011, 0b01111100), // 1
+			 $invert && $check(0b10000010, 0b01010101)
+				=> 'M%1$s,%2$s h%3$s q-%3$s,0 -%3$s,%3$sZ',
+			!$invert && $check(0b00001110, 0b11110001), // 3
+			 $invert && $check(0b00001010, 0b01010101)
+				=> 'M%1$s,%2$s m1,0 v%3$s q0,-%3$s -%3$s,-%3$sZ',
+			!$invert && $check(0b00111000, 0b11000111), // 5
+			 $invert && $check(0b00101000, 0b01010101)
+				=> 'M%1$s,%2$s m1,1 h-%3$s q%3$s,0 %3$s,-%3$sZ',
+			!$invert && $check(0b11100000, 0b00011111), // 7
+			 $invert && $check(0b10100000, 0b01010101)
+				=> 'M%1$s,%2$s m0,1 v-%3$s q0,%3$s %3$s,%3$sZ',
+			// empty block
+			default
+				=> '',
+		};
 
 	}