locally scoping, but the result is an infinite loop for the second scanAll

gistfile1.js

var q = require('queue-flow');


function scanAll (data, callback) {
    console.log('scanAll with data:', data);

    var counter = 0;
    var items = []; 

    var end = q();
    end 
        .each(function() {
            console.log('end');
            callback(items);
        }); 

    var recurse = q();
    recurse
        .each(function(data) {
            if (data.Items[0] === 'X') counter++;
            items = items.concat(data.Items);
            console.log('recurse - each items:', items);
        })  
        .branch(function() {
            return counter > 1 ? end : recurse;
        }); 

    q([data]).branch(recurse);
}

scanAll({
    Items: ['X', 'firstScan-1', 'firstScan-2', 'firstScan-3']
}, function(result) {
    console.log('first result:', result);
});

scanAll({
    Items: ['secondScan-1', 'secondScan-2', 'secondScan-3']
}, function(result) {
    console.log('second result:', result);
});