gistfile1.js

    var fs = require('fs');
    var stream = fs.createReadStream('./test/fixtures/current');
    var currentData = '';

    stream.on('error', function (err) {
      throw err;
    });
    stream.on('data', function (data) {
      currentData += data;
    }); 

    stream.on('end', function (data) {
      // Here you can tell it to process content or pass to func: doSomethingWith(currentData);
      console.log("File Contents: " + currentData);
    });