File getMimeType throws exception if no mime type can be set, fixes for phpstan checks

src/Convert/Byte.php

@@ -154,7 +154,7 @@ class Byte
 		if (!empty($matches[1])) {
 			$number_negative = true;
 		}
-		if (isset($matches[2]) && isset($matches[3])) {
+		if (isset($matches[2])) {
 			// remove all non valid characters from the number
 			$number = preg_replace('/[^0-9\.]/', '', $matches[2]);
 			// final clean up and convert to float

src/Convert/Color/Color.php

@@ -957,9 +957,9 @@ class Color
 	 * Undocumented function
 	 *
 	 * @param  HWB $hwb
-	 * @return Lch
+	 * @return LCH
 	 */
-	public static function hwbToLch(HWB $hwb): Lch
+	public static function hwbToLch(HWB $hwb): LCH
 	{
 		return self::rgbToLch(
 			self::hwbToRgb($hwb)
@@ -1078,10 +1078,10 @@ class Color
 	/**
 	 * OkLab to Lch (CIE)
 	 *
-	 * @param  LAB $lab
+	 * @param  Lab $lab
 	 * @return LCH
 	 */
-	public static function okLabToLch(LAB $lab): LCH
+	public static function okLabToLch(Lab $lab): LCH
 	{
 		return self::labToLch(
 			self::okLabToLab($lab)
@@ -1092,9 +1092,9 @@ class Color
 	 * Lch (CIE) to OkLab
 	 *
 	 * @param  LCH $lch
-	 * @return LAB
+	 * @return Lab
 	 */
-	public static function lchToOkLab(LCH $lch): LAB
+	public static function lchToOkLab(LCH $lch): Lab
 	{
 		return self::labToOkLab(
 			self::lchToLab($lch)

src/Convert/Json.php

@@ -74,11 +74,15 @@ class Json
 	 * Weill set the internval last error state and info can be read with jsonGetLastError
 	 *
 	 * @param  string $json
-	 * @param  int    $flags only JSON_INVALID_UTF8_IGNORE is currently allowed
+	 * @param  int $flags only JSON_INVALID_UTF8_IGNORE is currently allowed
 	 * @return bool
+	 * @throws \InvalidArgumentException if flags is invalid
 	 */
 	public static function jsonValidate(string $json, int $flags = 0): bool
 	{
+		if ($flags != 0 && $flags != JSON_INVALID_UTF8_IGNORE) {
+			throw new \InvalidArgumentException("For flag only 0 or JSON_INVALID_UTF8_IGNORE is allwed: " . $flags);
+		}
 		$json_valid = json_validate($json, flags:$flags);
 		self::$json_last_error = json_last_error();
 		return $json_valid;