title: Meaning of command line "node ."
body: <p><strong>Where can i find something in the documentation about "node ."?</strong></p>
  
  <p>When i run "node ." without an existing package.json file then i will get some error messages.</p>
  
  <p>When i run "node ." with an existing package.json file then it opens the file defined in "main" field in package.json</p>
  
  <p>Can someone explain what exactly "node ." does please?</p>