Return error information from API when using Next-auth

Is it possible to allow next-auth to return errors from an API and pass them through from the client-side?

As an example, the API is returning specifically if the user's email or password is incorrect. On our mobile app, this is working great. Though on the website, we're using Next-auth. Using the credentials example from the documentation, it would be great to change the return value to an object.

import CredentialsProvider from "next-auth/providers/credentials"
providers: [
  CredentialsProvider({
    name: "Credentials",
 
    credentials: {
      username: { label: "Username", type: "text", placeholder: "jsmith" },
      password: {  label: "Password", type: "password" }
    },
    async authorize(credentials, req) {
      const user = { id: 1, name: "J Smith", email: "jsmith@example.com" }

      if (user) {
        // Any object returned will be saved in `user` property of the JWT
        return user
      } else {
        // Return an object that will pass error information through to the client-side.
        return { errors: user.errors, status: false }
      }
    }
  })
]

Please do let me know if there is another post that relates to this one as I'm unable to find it online.

Yes this should allow you to do that, though in the credential, when passing the values to the next auth, add a redirect:false

You can find the documentation here

Your sign in method will therefore look like this.

signIn('credentials', { redirect: false, username:'username', password: 'password' })

Your code can look like this

import CredentialsProvider from "next-auth/providers/credentials"
providers: [
  CredentialsProvider({
    name: "Credentials",
 
    credentials: {
      username: { label: "Username", type: "text", placeholder: "jsmith" },
      password: {  label: "Password", type: "password" }
    },
    async authorize(credentials, req) {
      const user = { id: 1, name: "J Smith", email: "jsmith@example.com" }

      if (user) {
        // Any object returned will be saved in `user` property of the JWT
        return user
      } else {
        // Return an object that will pass error information through to the client-side.
        throw new Error( JSON.stringify({ errors: user.errors, status: false }))
      }
    }
  })