现在有了!我最近创建了一个库，json-transforms，正是为了这个目的:

https://github.com/ColinEberhardt/json-transforms

它结合使用了JSPath(一种模仿XPath的DSL)和一种直接受到XSLT启发的递归模式匹配方法。

这里有一个简单的例子。给定以下JSON对象:

const json = {
  "automobiles": [
    { "maker": "Nissan", "model": "Teana", "year": 2011 },
    { "maker": "Honda", "model": "Jazz", "year": 2010 },
    { "maker": "Honda", "model": "Civic", "year": 2007 },
    { "maker": "Toyota", "model": "Yaris", "year": 2008 },
    { "maker": "Honda", "model": "Accord", "year": 2011 }
  ]
};

这是一个变换:

const jsont = require('json-transforms');
const rules = [
  jsont.pathRule(
    '.automobiles{.maker === "Honda"}', d => ({
      Honda: d.runner()
    })
  ),
  jsont.pathRule(
    '.{.maker}', d => ({
      model: d.match.model,
      year: d.match.year
    })
  ),
  jsont.identity
];

const transformed  = jsont.transform(json, rules);

输出如下:

{
  "Honda": [
    { "model": "Jazz", "year": 2010 },
    { "model": "Civic", "year": 2007 },
    { "model": "Accord", "year": 2011 }
  ]
}

这个转换由三个规则组成。第一个匹配本田制造的任何汽车，发出一个具有Honda属性的对象，然后递归匹配。第二条规则匹配任何具有maker属性的对象，输出模型和年份属性。最后一个是递归匹配的恒等变换。

JSONiq就是这样一个标准，而Zorba是一个开源的c++实现。JSONiq也可以看作是添加了JSON作为原生数据类型的XQuery。

试着震动。它是一个用Java编写的JSON到JSON转换库。

它是专门创建的，因为我们不想玩“JSON -> XML -> XSLT -> XML -> JSON”的游戏，而且对任何足够复杂的转换使用模板是不可维护的。

看看jsonpath-object-transform

XSLT支持JSON，见http://www.w3.org/TR/xslt-30/#json

XML uses angular brackets for delimiter tokens, JSON uses braces, square brackets, ... I. e. XML's fewer token recognition comparisons means it's optimized for declarative transformation, whereas more comparisons, being like switch statement, for speed reasons assume speculative branch prediction that imperative code in scripting languages is useful for. As direct consequence, for different mixes of semi-structured data, you may want to benchmark XSLT and javascript engines' performance as part of responsive pages. For negligible data payload, transformations might work just as well with JSON without XML serialization. W3's decision ought to be based on better analysis.

一种尚未给出的方法是使用解析器生成器在XSLT中创建解析器，解析JSON并生成XML输出。

在XML会议上被多次提及的一个选项是ReX解析器生成器(http://www.bottlecaps.de/rex/)——尽管在站点上完全没有文档记载，但是可以通过搜索找到菜谱。