javascript - How to find the type of content inside req.body? -

as per https://developer.mozilla.org/en-us/docs/web/api/request/request type of body can of either type:

1. arraybuffer

2. blob

3. formdata

4. json

5. text

is there way receiving side know type is? reason ask since getting post message 3rd party req.body empty.

// code console.info("headers: ", req.headers); // shows headers console.log("data: ", req.body); // shows nothing 

however, after further inspection, seems need process data follows (since using readablestream):

   // code 3rd party library    req.on('data', function (chunk) {        data += chunk;    });     req.on('end', function () {        var messagedata = json.parse(data);        console.log("data: ", messagedata); //shows data     } 

you could people use express , body parser library avoid having loads of boilerplate code parsing them.

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