Context

• node version: 8
• joi version: (pre) 11.0
• environment (node, browser):
• used with (hapi, standalone, ...):
• any other relevant information:

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

Describe your issue here, include schemas and inputs you are validating if needed.

const defaultJoi = Joi.defaults((schema) => {
  switch(schema.type) {
    case 'object': // it cannot be reached, since object schema's type is function.
      ...
  }
})

// this is not defaulted.
defaultJoi.object()

What did you expect ?

#1256 introduces Joi.defaults() feature, however,
there is a conflict in joi's API: type getter & Joi.object().type()

Type getter or mapping function of Joi.defaults() should be redesigned.