BA
Better Auth•2w ago
Pietro

additionalFields type not inferred

It doesn't infer any additionalField I add
No description
3 Replies
Moha
Moha•2w ago
Look at this comment: 
/**
 * User schema type used by better-auth, note that it's possible that user could have additional fields
 *
 * todo: we should use generics to extend this type with additional fields from plugins and options in the future
 */
export type User = z.infer<typeof userSchema>;
/**
 * User schema type used by better-auth, note that it's possible that user could have additional fields
 *
 * todo: we should use generics to extend this type with additional fields from plugins and options in the future
 */
export type User = z.infer<typeof userSchema>;
Source: https://github.com/better-auth/better-auth/blob/canary/packages/core/src/db/schema/user.ts
GitHub
better-auth/packages/core/src/db/schema/user.ts at canary · better...
The most comprehensive authentication framework for TypeScript - better-auth/better-auth
Pietro
PietroOP•2w ago
mmh not sure how that helps me? Even if I fix the User type all the typings of methods like auth.api.updateUser would still be broken For now I found a workaround creating a custom plugin: 
const userExtraPlugin: () => {
  id: 'user-extra';
  schema: {
    user: {
      fields: {
        defaultCurrency: {
          type: 'string';
        };
      };
    };
  };
} = () => {
  return {
    id: 'user-extra',
    schema: {
      user: {
        fields: {
          defaultCurrency: {
            type: 'string',
          },
        },
      },
    },
  };
};
const userExtraPlugin: () => {
  id: 'user-extra';
  schema: {
    user: {
      fields: {
        defaultCurrency: {
          type: 'string';
        };
      };
    };
  };
} = () => {
  return {
    id: 'user-extra',
    schema: {
      user: {
        fields: {
          defaultCurrency: {
            type: 'string',
          },
        },
      },
    },
  };
};
this fixes type inference, but it requires that weird duplicated type
Moha
Moha•2w ago
Yes, I think that's the only way for now, until they implement the additionalFields in the zod schema

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