small function for clean objects

cleaner.js

function reduce(x) {
	var res = {}
	var o;
    for (o in x) {
        if (!x.hasOwnProperty(o)){
            continue;
        }
        if (Array.isArray(x[o])) {
            var t = ac(x[o])
            if (t.length>0){
                res[o] = t
            } 
            continue;
        }
        if (typeof x[o] === 'object' && x[o]) {
            var t = reduce(x[o])
            if (Object.keys(t).length!=0 ) {               
                res[o] = t
            }
            continue;
        }
        if (x[o]) {
            res[o] = x[o]
        }
    }
    return res
}

function ac(x) {
    return x.map(c=> {
            if (Array.isArray(c))
                return ac(c)
            if (typeof c === 'object' && c)
                return reduce(c)
        return c
    }).filter(c=>!!c)
}