const tar = require('tar-stream');
const fs = require('fs');
const path = require('path');
const pipeline = require('pump'); // eequire('stream').pipeline

fs.createReadStream('test.tar')
  .pipe(tar.extract())
  .on('entry', function (header, stream, done) {
    console.log(header.name);
    pipeline(
      stream,
      fs.createWriteStream(path.join('/tmp', header.name)),
      done
    );
  });