Function walk

src/options/vendor-prefix-align.js:169–180

* Walks across nodes, and call payload for every node that pass * selector check. * * @param {Object} args arguments in form of: * { * node: {object} current node, * selector: {function} propertyName selector * payload: {function} work to do with gathered info

(args)

   *  }
   */
  function walk(args) {
    args.node.forEach(function(item, i) {
      var name = args.selector(item);
      var namespace = args.namespaceSelector &&
                      makeNamespace(args.namespaceSelector(item));
      var extraSymbols = args.getExtraSymbols(args.node, i);

      var info = name && getPrefixInfo(name, namespace, extraSymbols);
      if (!info) return;
      args.payload(info, i);
    });
  }

  /**
   * Returns property name.