Jsonp route for API

Does anyone know of an easy way to serve up a jsonp endpoint? In Express it’s a one-liner: http://expressjs.com/api.html#res.jsonp
But I can’t seem to find any mentions in jsonp in the relevant packages (Restivus, JsonRoutes, etc.).

Give a try for JsonRoutes

I’ve looked into JsonRoutes already, but I don’t see how it can be configured to return JSONP.
How would you do that?

the name of your callback should be placed in query string. In common case it looks like /api/get/result?callback=foo. So you can simply respond as

response.write(query.callback + '(' + JSON.stringify(yourJSONDataHere) + ')')

Don’t forget about headers)

Thanks for the suggestion. I tried that, but JsonRoutes hardcodes the content-type header: https://github.com/stubailo/meteor-rest/blob/master/packages/json-routes/json-routes.js#L64

So it doesn’t respond with useable jsonp.

No, you can use res (response) directly instead of sendResult. Like:

JsonRoutes.add 'GET', 'api/get/result', (req, res, next) ->
    res.write(req.query.callback + '(' + JSON.stringify(...) + ')')