Reading all files in a directory, store them in objects, and send the object

So, there are three parts. Reading, storing and sending.

Here’s the reading part:

var fs = require('fs');

function readFiles(dirname, onFileContent, onError) {
  fs.readdir(dirname, function(err, filenames) {
    if (err) {
      onError(err);
      return;
    }
    filenames.forEach(function(filename) {
      fs.readFile(dirname + filename, 'utf-8', function(err, content) {
        if (err) {
          onError(err);
          return;
        }
        onFileContent(filename, content);
      });
    });
  });
}

Here’s the storing part:

var data = {};
readFiles('dirname/', function(filename, content) {
  data[filename] = content;
}, function(err) {
  throw err;
});

The sending part is up to you. You may want to send them one by one or after reading completion.

If you want to send files after reading completion you should either use sync versions of fs functions or use promises. Async callbacks is not a good style.

Additionally you asked about stripping an extension. You should proceed with questions one by one. Nobody will write a complete solution just for you.