nextjs-custom-server-error-logging.ts

import nextJs from "next"

async function createNextAppWithCustomLogging() {
  const nextApp = nextJs({ dev: false })
  const server = (await (nextApp as any).getServer()) as any
  if (!(server.logError instanceof Function)) throw Error("Assertion fail")
  server.logError = (err: Error) => {
    logger.error(err)
  }
  return nextApp
}

Custom error logging for Next.js custom servers. Next.js doesn't support custom error logging, but this helper will make it possible with Next.js version 12.

Note: works only when not running Next.js in dev mode, that's why there's dev: false.