Print all the routes defined in an express app (excluding middleware)

print-express-routes.js

function printRoutePaths(router, prefix) {
  router.stack.forEach(function(r){
    if (r.route?.path){
      for (let key in r.route.methods) {
        if (r.route.methods[key]) {
          console.log(`${key.toUpperCase()} ${prefix}${r.route.path}`)
        }
      }
    } else if (r.name === 'router') {
      let newPrefix = r.regexp.toString().replace('/^\\', '').replace('\\/?(?=\\/|$)/i', '')
      printRoutePaths(r.handle, `${prefix}${newPrefix}`)
    }
  })
}