gistfile1.txt

    function parseDOM() {
        var root = document.querySelector('[data-key]').cloneNode(true);
        var notNsNodes = root.querySelectorAll('*:not([data-key^=view]):not([data-key^=box])');
        [].forEach.call(notNsNodes, function(node) {
            node.parentNode.removeChild(node);
        });

        function getJSON() {
            function getObjectNode(node) {
                var jsonNode = {};

                if (node.nodeType === 1) {
                    var children = (node.childNodes = [].map.call(node.childNodes, getObjectNode));
                    var key = node.getAttribute('data-key');
                    var isBox = key.indexOf('box') !== -1;
                    var isVisible = node.className.indexOf('ns-view-visible') !== -1;
                    var view = key.split('&')[0].split('=')[1];
                    var params = {};

                    var paramsIndex = key.indexOf('&');
                    if (paramsIndex !== -1) {
                        var paramsKey = key.slice(paramsIndex + 1);
                        paramsKey.split('&').forEach(function(key) {
                            var _params = key.split('=');
                            params[_params[0]] = _params[1];
                        })
                    }

                    jsonNode = {
                        view: view,
                        params: params,
                        isBox: isBox,
                        isVisible: isVisible
                    };

                    if (children.length) {
                        jsonNode.children = children;
                    }
                }

                return jsonNode;
            }

            return getObjectNode(root);
        }

        var json = getJSON();

        chrome.runtime.sendMessage({type: "dom", json: json});

        console.log('extenstion', json);
    }