feat(type): Add value-of<BackedEnum> type

src/Psl/Type/Internal/BackedEnumValueType.php

@@ -9,8 +9,7 @@
 use Psl\Type\Exception\CoercionException;
 use Psl\Type\Type;
 
-use function array_map;
-use function in_array;
+use function is_int;
 use function is_string;
 use function Psl\Type\int;
 use function Psl\Type\string;
@@ -46,12 +45,10 @@ public function matches(mixed $value): bool
             return false;
         }
 
-        $values = array_map(
-            static fn (BackedEnum $enum): string|int => $enum->value,
-            $this->enum::cases(),
-        );
-
-        return in_array($value, $values, true);
+        return match ($this->isStringBacked) {
+            true => is_string($value) && $this->enum::tryFrom($value) !== null,
+            false => is_int($value) && $this->enum::tryFrom($value) !== null,
+        };
     }
 
     /**
@@ -64,22 +61,15 @@ public function matches(mixed $value): bool
      */
     public function coerce(mixed $value): string|int
     {
-        if ($this->isStringBacked) {
-            try {
-                $str_value = string()->coerce($value);
-                if ($this->matches($str_value)) {
-                    return $str_value;
-                }
-            } catch (CoercionException) {
-            }
-        } else {
-            try {
-                $int_value = int()->coerce($value);
-                if ($this->matches($int_value)) {
-                    return $int_value;
-                }
-            } catch (CoercionException) {
+        try {
+            $case = $this->isStringBacked
+                ? string()->coerce($value)
+                : int()->coerce($value);
+
+            if ($this->matches($case)) {
+                return $case;
             }
+        } catch (CoercionException) {
         }
 
         throw CoercionException::withValue($value, $this->toString());