Any & Empty Bindings

anyEmptyBindings.js

function hasItems(data) {
    var value = ko.unwrap(data),
        result = false;

    if (value.length && value.length > 0)
        result = true;

    return result;
}

ko.bindingHandlers.any = {
    init: function (element, valueAccessor, allBindings) {
        var result = hasItems(valueAccessor());
        return ko.bindingHandlers['if']['init'](element, function () { return result; }, allBindings);
    },
    update: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
        var result = hasItems(valueAccessor());
        ko.bindingHandlers['if']['update'](element, function () { return result; }, allBindings, viewModel, bindingContext);
    }
};

ko.virtualElements.allowedBindings.any = true;

ko.bindingHandlers.empty = {
    init: function (element, valueAccessor, allBindings) {
        var result = !hasItems(valueAccessor());
        return ko.bindingHandlers['if']['init'](element, function () { return result; }, allBindings);
    },
    update: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
        var result = !hasItems(valueAccessor());
        ko.bindingHandlers['if']['update'](element, function () { return result; }, allBindings, viewModel, bindingContext);
    }
};

ko.virtualElements.allowedBindings.empty = true;

usage.html

<!-- ko any: someArrayOrObservableArray -->
<h1>Has Some</h1>
<!-- /ko-->

<!-- ko empty: someArrayOrObservableArray -->
<h1>Empty</h1>
<!-- /ko-->

The implementation is a little crud and could be cleaned up a lot but is this something the @knockoutjs team wants?