Additional fields missing from User type

I have added 2 additional fields to better auth with this code:
export const auth = betterAuth({
    appName: 'Test',
    user: {
        additionalFields: {
            timezone: {
                type: 'string',
                default: 'UTC',
                nullable: false,
            },
            customerId: {
                type: 'string',
                default: '',
                nullable: false,
            },
        },
    },

i'm working only server side, is there something like type Session = typeof auth.$Infer.Session for the User type?
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