Context

• node v10.15.3:
• joi 15.0.2:
• node:
• standalone:

What are you trying to achieve or the steps to reproduce?

I'm trying to use binded versions of Joi methods:

const { bool } = Joi.bind()

Which result you had?

An error:

Message:
  Must be invoked on a Joi instance.

What did you expect?

bool() should work just as boolean() does.