A (possibly terrible) way to aggregate all ATTR definitions in a Y.Base hierarchy from the class level, pre-instantiation

gistfile1.js

YUI.use('base-base', function (Y) {

function A() {}

Y.extend(A, Y.Base, {}, {
    ATTRS: {
        foo: {value: 'foo'}
    }
});

function B() {}

Y.extend(B, A, {}, {
    ATTRS: {
        bar: {value: 'bar'}
    }
});

function C() {}

Y.extend(C, B);

console.dir(C.prototype._getAttrCfgs.apply(C.prototype));

});