"Schema can only contain plain objects" when using Joi with SSR

[MajorMeerkatThe3rd]

Support plan

• is this issue currently blocking your project? (yes/no): yes
• is this issue affecting a production system? (yes/no): yes

Context

• node version: 16.9.0
• module version: joi@17.9.1
• environment (e.g. node, browser, native): browser
• used with (e.g. hapi application, another framework, standalone, ...): nuxt
• any other relevant information: only happens with SSR

How can we help?

When using the pattern command, I get the error "Schema can only contain plain objects". This only happens when trying to enable SSR.

import Joi from "joi";

// copy pasted from the example
const schema = Joi.object({ a: Joi.string() }).pattern(/\w\d/, Joi.boolean());