$j = JE->new;
$js_num = new JE::Number $j, 17;
$perl_num = $js_num->value;
$js_num->to_object; # returns a new JE::Object::Number
The "new" method accepts a global (JE) object and a number as its two arguments. If the latter is an object with a "to_number" method whose return value isa JE::Number, that object's internal value will be used. Otherwise the arg itself is used. (The precise details of the behaviour of "new" when the second arg is a object are subject to change.) It is numified Perl-style, so 'nancy' becomes NaN and 'information' becomes Infinity.
The "value" method produces a Perl scalar. The "0+" numeric operator is overloaded and produces the same.
The "typeof" and "class" methods produce the strings 'number' and 'Number', respectively.