Modify existing schema

[nemanjam]

I want to reuse same register schema on both client and server. Naturally I don't send confirmPassword field to server and that's why validation fails there. Is there any helper method to remove confirmPassword check from existing schema?

On server i call schema like this:

const validateUserRegister = withValidation({
  schema: userRegisterSchema, // bypass confirmPassword check here
  type: 'Zod',
  mode: 'body',
});

schema:

export const userRegisterSchema = z
  .object({
    email: z.string().email(),
    password: z.string().min(passwordMin).max(passwordMax),
    // +
    confirmPassword: z.string().optional().or(z.literal('')),
    name: z.string().min(nameMin).max(nameMax),
    username: z.string().min(usernameMin).max(usernameMax),
  })
  .refine((data) => data.confirmPassword === data.password, {
    message: "Passwords don't match.",
    path: ['confirmPassword'],
  });

[JacobWeisenburger]

It looks like you are wanting .pick/.omit

I hope this helps.

const userRegisterSchema = z.object( {
    email: z.string().email(),
    password: z.string().min( passwordMin ).max( passwordMax ),
    confirmPassword: z.string().optional().or( z.literal( '' ) ),
    name: z.string().min( nameMin ).max( nameMax ),
    username: z.string().min( usernameMin ).max( usernameMax ),
} ).refine( ( data ) => data.confirmPassword === data.password, {
    message: "Passwords don't match.",
    path: [ 'confirmPassword' ],
} )

const userRegisterSchemaOnlyEmailAndPassword = userRegisterSchema.innerType().pick( {
    email: true,
    password: true,
} )
type UserRegisterSchemaOnlyEmailAndPassword = z.infer<typeof userRegisterSchemaOnlyEmailAndPassword>
// type UserRegisterSchemaOnlyEmailAndPassword = {
//     email: string;
//     password: string;
// }

const userRegisterSchemaWithoutConfirmPassword = userRegisterSchema.innerType().omit( {
    confirmPassword: true,
} )
type UserRegisterSchemaWithoutConfirmPassword = z.infer<typeof userRegisterSchemaWithoutConfirmPassword>
// type UserRegisterSchemaWithoutConfirmPassword = {
//     email: string;
//     password: string;
//     name: string;
//     username: string;
// }

[nemanjam]

That's it, thank you.