title: Log without erase
body: <p>What's the best way to log a dynamic variable?</p>
  
  <p>Example: while running the app, my log changes size and data. I want the log to not change, and simply save data.</p>
  
  <p>This is my code for creating the log file:</p>
  
  <pre><code>const output = fs.createWriteStream('./stdout.log');
  const errorOutput = fs.createWriteStream('./stderr.log');
  const logger = new Console(output, errorOutput);
  logger.log(res);
  </code></pre>
  
  <p>The var <code>res</code> changes during the execution of the app.</p>