$1.$ Transform any value of zero $(`0`)$ into the boolean $`$false$`.$

$2.$ Transform any value of one $(`1`)$ into the boolean $`$true$`.$

$3.$ If a value is $`$null$`,$ delete the entire key$-$value pair from the object.

$4.$ If any $\_$property$\_$ name exceeds $9$ characters, return the string $`"$shorten all prop names to $9$ chars or less"$`.$