How to set 'covert' to false globally

I wan't to set convert: false globally, rather than in:

`
Joi.validate({age: '1'}, {convert: false})
`
how can i coding?

The issue names Joi.validate and the convert option but no files or tests. Start by checking Joi's validation-options documentation and the implementation of Joi.validate for configuration scope; done means confirming whether a global setting is supported and documenting or specifying the required behavior.

Written by the indexing model from the issue text.