How to get the -p argument value in Next.js?

Asked Nov 04 '22 at 19:22

Active Nov 04 '22 at 19:30

Viewed 60 times

If my Nexs.js app is started with

yarn dev

Where package.json defines it as

{
   "scripts": {
     "dev": "next dev -p 4000"
   }
}

How I get this 4000 value from the -p switch?

Because process.env.PORT is not set this way.

const getBaseUrl = () => {
  if (typeof window !== 'undefined') return '';  // browser use relative path

  // How to replace the ???? with the value of -p, defaulting to 3000 if not set

  return 'http://localhost:????';  // dev SSR should use localhost
}

edited Nov 04 '22 at 19:30

asked Nov 04 '22 at 19:22

Yanick Rochon

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What is your `yarn dev` script? – kelsny Nov 04 '22 at 19:23
It's Next.js.... – Yanick Rochon Nov 04 '22 at 19:25
So we're *assuming* it is `next dev`? Based on [this question](https://stackoverflow.com/questions/60147499/how-to-set-port-in-next-js), it seems like it should be possible to do `yarn dev -p ...`, but if it doesn't, you could always change your script to `next dev -p ...`. – kelsny Nov 04 '22 at 19:27
@caTS you are so pedantic!! – Yanick Rochon Nov 04 '22 at 19:29
@cant you just change the port in your json script to 3000 ? or there is somthing else using that port? – mahmoud ettouahri Nov 04 '22 at 19:57
1

if you need to set the .json port using a .env file this [link](https://stackoverflow.com/questions/34650527/how-to-use-environment-variables-in-package-json) might help you – mahmoud ettouahri Nov 04 '22 at 20:05

How to get the -p argument value in Next.js?

0 Answers0