M: null-reader stream-read1 drop f ;
M: null-reader stream-read-until 2drop f f ;
M: null-reader stream-read 2drop f ;
+M: null-reader stream-peek1 drop f ;
+M: null-reader stream-peek 2drop f ;
M: null-writer stream-element-type drop +byte+ ;
M: null-writer stream-write1 2drop ;