simple-email/node_modules/cardinal/examples/highlight-self.js

// This file will highlight itself using the default theme when run via: "node highlight-self"
'use strict'

var cardinal = require('..')

function highlight() {
  // Using the asynchronous highlightFile()
  // For synchronous highlighting use: highlightFileSync() - see highlight-self-hide-semicolons.js

  cardinal.highlightFile(__filename, { linenos: true }, function(err, res) {
    if (err) return console.error(err)
    console.log(res)
  })
}

highlight()