JSON is not a subset of JavaScript. I need my output to be 100% valid JavaScript; it will be evaluated as such -- i.e., JSON.stringify will not (always) work for my needs.
Is there a JavaScript stringifier for Node?
As a bonus, it would be nice if it could stringify objects.
You can use JSON.stringify and afterwards replace the remaining U+2028 and U+2029 characters. As the article linked states, the characters can only occur in the strings, so we can safely replace them by their escaped versions without worrying about replacing characters where we should not be replacing them:
JSON.stringify('ro\u2028cks').replace(/\u2028/g,'\\u2028').replace(/\u2029/g,'\\u2029')From the last paragraph in the article you linked:
The solution
Luckily, the solution is simple: If we look at the JSON specification we see that the only place where a U+2028 or U+2029 can occur is in a string. Therefore we can simply replace every U+2028 with \u2028 (the escape sequence) and U+2029 with \u2029 whenever we need to send out some JSONP.
It’s already been fixed in Rack::JSONP and I encourage all frameworks or libraries that send out JSONP to do the same. It’s a one-line patch in most languages and the result is still 100% valid JSON.
来源：https://stackoverflow.com/questions/16005091/node-js-javascript-stringify