如题我想获取menu数组下的带http开头的路径，最后还是为空？怎么回事？

var menu = [{
            "path":"/a",
            "children":[{"path":"http://baidu.com","children":[]},
            {"path":"/a1","children":[]},
            {"path":"/a2","children":[]}]},
            {"path":"/b","children":[{"path":"/b1","children":[]}]},
            {"path":"/c","children":[],}]

        function exPath(arr) {
            var path = '';
            arr.some((item)=>{
                if(item.path.match(/^http/g)) {
                    path = item.path
                    return;
                } else {
                    if(item.children.length) {
                        exPath(item.children)
                    }
                }
            })
            return path;
        }
        var t = exPath(menu);
        console.log(t)