Better Auth•5mo ago

Extend type user

user: {
    changeEmail: {
      enabled: true,
      sendChangeEmailVerification: async ({ newEmail, url }) => {
      ///
      },
    },
    additionalFields: {
      truc_de_con: {
        type: "string",
        nullable: true,
      },
    },

user: {
    changeEmail: {
      enabled: true,
      sendChangeEmailVerification: async ({ newEmail, url }) => {
      ///
      },
    },
    additionalFields: {
      truc_de_con: {
        type: "string",
        nullable: true,
      },
    },

I added an additionalFields but when I import type { User } from "better-auth"; I get only the default form

(alias) type User = {
    id: string;
    name: string;
    email: string;
    emailVerified: boolean;
    createdAt: Date;
    updatedAt: Date;
    image?: string | null | undefined;
}

(alias) type User = {
    id: string;
    name: string;
    email: string;
    emailVerified: boolean;
    createdAt: Date;
    updatedAt: Date;
    image?: string | null | undefined;
}

Solution:

Found a quick fix

export type User = typeof auth.$Infer.Session["user"];

export type User = typeof auth.$Infer.Session["user"];

adding this in the auth.ts

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13 Replies

JïnsOP•5mo ago

Thx for any help

Solution

Jïns•5mo ago

Found a quick fix

export type User = typeof auth.$Infer.Session["user"];

export type User = typeof auth.$Infer.Session["user"];

adding this in the auth.ts

JïnsOP•5mo ago

But lets see what mclovin have to say 🙂

McLovin•5mo ago

Are you using authClient on the frontend? if so make sure you add the inferAdditionalFields plugin

JïnsOP•5mo ago

import { createAuthClient } from "better-auth/client";

export const authClient = createAuthClient({
  // URL de base de votre API auth
  baseURL: "http://localhost:3000",
});

import { createAuthClient } from "better-auth/client";

export const authClient = createAuthClient({
  // URL de base de votre API auth
  baseURL: "http://localhost:3000",
});

I have only this in my authClient

McLovin•5mo ago

Here's an example in my code, you can copy the additional fields from your backend code and remove any unneccesary fields like references etc

JïnsOP•5mo ago

thx a lot for your help the boss

McLovin•5mo ago

If you are satisfied with my answer please take the time and use the context window to mark it as solution 🙂

JïnsOP•5mo ago

Yeah Last question How you import the type in the front ?

McLovin•5mo ago

export type Session = typeof authClient.$Infer.Session; works

JïnsOP•5mo ago

Yeah but Thats the session I found thats quick fix export type User = typeof auth.$Infer.Session["user"];

McLovin•5mo ago

Yea I think thats the best way to get the User type. If you use the inferAdditionalFields plugin the type will be inferred automagically though

JïnsOP•5mo ago

thx a lot

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Extend type user

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