How can I use one API route from within another one?

[ajones55555]

I have a working API route (confirmed with postman) at "/api/auth/emailAvailable"

I want to call this API route from another API route, "/api/auth/register", so I did this:

handler.use(async (req, res) => {
    axios.post(process.env.ROOT_URL + "/api/auth/emailAvailable", {
        email: req.body.email || '  '
    }).then(subRes => res.json(subRes)).catch(e => res.json(e))

For some reason the response is always either a 400 with error, or an empty object. I also get this message in the console

API resolved without sending a response for /api/auth/register, this may result in stalled requests.
API resolved without sending a response for /api/auth/emailAvailable, this may result in stalled requests.

Any idea what could be wrong?

[timneutkens]

The way you've outlined with fetching /api/auth/emailAvailable actually slows down the endpoint, instead you can import the function that you were going to execute.

Eg:

// pages/api/auth/emailAvailable.js

export function emailAvailable(email) {
  // Just an example
  return db.find(email).length > 0
}

export default (req, res) => {
  return res.json({ available: emailAvailable(req.body.email) })
}

// pages/api/auth/register.js
import {emailAvailable} from './emailAvailable'

export default (req, res) => {
  const available = emailAvailable(req.body.email)
}

[ajones55555]

Ah okay, that makes sense. Thanks!