Or:

use feature 'state';
use Types::Standard -types;
use Type::Params 'compile';

sub test_function {
  state $signature = compile( ArrayRef[Str] );
  my ( $ref ) = &$signature;
  
  # function body goes here
}
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The signature will check that the function was passed the correct number of arguments, the correct types, etc, and die if it wasn't.