Use generics in throw_if and throw_unless to indicate dynamic exception type (#47938)

Author: osbre

src/Illuminate/Support/helpers.php

@@ -314,12 +314,14 @@ function tap($value, $callback = null)
     /**
      * Throw the given exception if the given condition is true.
      *
+     * @template TException of \Throwable
+     *
      * @param  mixed  $condition
-     * @param  \Throwable|string  $exception
+     * @param  TException|class-string<TException>  $exception
      * @param  mixed  ...$parameters
      * @return mixed
      *
-     * @throws \Throwable
+     * @throws TException
      */
     function throw_if($condition, $exception = 'RuntimeException', ...$parameters)
     {
@@ -339,12 +341,14 @@ function throw_if($condition, $exception = 'RuntimeException', ...$parameters)
     /**
      * Throw the given exception unless the given condition is true.
      *
+     * @template TException of \Throwable
+     *
      * @param  mixed  $condition
-     * @param  \Throwable|string  $exception
+     * @param  TException|class-string<TException>  $exception
      * @param  mixed  ...$parameters
      * @return mixed
      *
-     * @throws \Throwable
+     * @throws TException
      */
     function throw_unless($condition, $exception = 'RuntimeException', ...$parameters)
     {