_out = [] _out.push('') html(lang="en") { head { _out.push('') meta(charset="utf-8") {} meta(name="viewport" content="width=device-width,initial-scale=1,shrink-to-fit=no") {} _out.push('') link(rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous") {} title { 'Hello, world!' } } body { h1 { 'Hello, world!' } _out.push('') _out.push('') script(src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous") {} script(src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous") {} script(src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous") {} let hello1 = 'HELLO' let world1 = 'WORLD' script { let hello = ${JSON.stringify(hello1)} let world = ${JSON.stringify(world1)} console.log(`oh, ${hello}, \${world}`) } } } console.log(_out.join(''))