Turn an object into an array of accessor strings

gistfile1.txt

function flatten(x, result, prefix) {
     if(_.isObject(x)  && !_.isArray(x)) {
       _.each(x, function(v, k) {
           result = flatten(v, result, prefix ? prefix + '.' + k : k)
        })
    } else {
        result[prefix] = x
    }
    return result
}

var obj = {a: {b: {c: [1,2]}, d: {z: [0,1], y: {l: {r:[0,1]}}}}};

result = flatten(obj, {}, '')
keys = _.keys(result);
console.log(keys)