Failing ES projection

gistfile1.txt

fromAll().when({
    $init: function () {
        return { }; 
    },
    $any: function(state, event) {       
        var eventType = event.eventType;
        if (state.hasOwnProperty(eventType)) {
            state[eventType] += 1;
        } else {
            state[eventType] = 1;
        }
        
        return state;
    }
});