listen-port

retrieve the port(s) that a process is listening on

Usage no npm install needed!

<script type="module">
  import listenPort from 'https://cdn.skypack.dev/listen-port';
</script>

Retrieve the port(s) that a process is listening on. Executes lsof behind the scenes.

import port from 'listen-port'

port(`tor`)
  .then(ports => console.log(`tor is listening on ${ports}`))
  .catch(console.error)

Returns a single value as a Number or an Array of multiple values.

A String containing a COMMAND or a PID as a Number.