Couchbase, Node js. Find family tree, recursively collect ids of its leaf nodes, and get all leaf node documents with getMulti.

couchbase.js

var couchbase = require("couchbase");
var cluster = new couchbase.Cluster("127.0.0.1:8091");
var CbBucket = "aBucket";
var pass = "12345678";

var bucket = db.openBucket(CbBucket, password, function(err) {
    bucket.operationTimeout = 500 * 1000; //increase connection time
    if(err){
        throw err;
    }
    else{
        bucket.get("Family_6da5b3a7-5ab6-40a3-b0b4-95cb32237978", function(err, family){
            if (err){
                throw err;
            }
            else if (!family.value.tree || family.value.tree.nodes.length == 0){
                console.log("No family tree found");
            }
            else{
                var allNodes = [];
              
                function getNodes(nodes){
                    nodes.forEach(function(node){
                        if(node.nodes.length == 0){
                            allNodes.push(node.id);
                        }
                        getNodes(node.nodes);
                    })
                }
                getNodes(family.value.tree.nodes);

                bucket.getMulti(allNodes, function (err, leafNodes) {
                    if (err) {
                        throw err;
                    }
                    else {
                        console.log(leafNodes);
                    }
                })
            }
        })
    }
})