add scalar and scalar|null

Author: MartkCz

src/Mixins/ArrayTypeAssertTrait.php

@@ -70,6 +70,16 @@ public static function intOrFloatOrNull(mixed $array, int|string $key): int|floa
 		return TypeAssert::intOrFloatOrNull(self::get($array, $key));
 	}
 
+	public static function scalar(mixed $array, int|string $key): int|float|string|bool
+	{
+		return TypeAssert::scalar(self::get($array, $key));
+	}
+
+	public static function scalarOrNull(mixed $array, int|string $key): int|float|string|bool|null
+	{
+		return TypeAssert::scalarOrNull(self::get($array, $key));
+	}
+
 	public static function numeric(mixed $array, int|string $key): float|int
 	{
 		return TypeAssert::numeric(self::get($array, $key));

src/Mixins/TypeAssertTrait.php

@@ -118,6 +118,24 @@ public static function intOrFloatOrNull(mixed $value): int|float|null
 		return $value;
 	}
 
+	public static function scalar(mixed $value): int|float|string|bool
+	{
+		if (!is_scalar($value)) {
+			throw new AssertionFailedException(self::createErrorMessage($value, 'scalar'));
+		}
+
+		return $value;
+	}
+
+	public static function scalarOrNull(mixed $value): int|float|string|bool|null
+	{
+		if (!is_scalar($value) && $value !== null) {
+			throw new AssertionFailedException(self::createErrorMessage($value, 'scalar|null'));
+		}
+
+		return $value;
+	}
+
 	public static function numeric(mixed $value): float|int
 	{
 		if (is_string($value) && is_numeric($value)) {