Array validation with .error()

[kimini507]

Context

• node version: v10.13.0
• joi version: 16.0.0-rc1
• environment (node, browser): node
• used with (hapi, standalone, ...): standalone
• any other relevant information:

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

const myValidator = Joi.string().trim().regex(/someregex/)
  .error(errors => {
    let error = errors[0];
    if (error.type === 'string.regex.base') {
      error.message = 'my new error message'
    }

    return errors;
  })

let { error, value } = Joi.validate(input, {
  field1: Joi.array().items(myValidator.min(2).max(64)),
  field2: myValidator
})

Which result you had ?

When there is an error in field2 (not array), I am getting what I expected.

But when there is an error inside the array (field1), error is null while value will look like:

{
  field1: [
    // instance of Report with properties such as isJoi, context, message, etc
    isJoi: {...}
  ],
  field2: 'original value'
}

What did you expect ?

let { error, value } = Joi.validate(input, {
  field1: Joi.array().items(myValidator.min(2).max(64)),
  field2: myValidator
})

I expect error to be the error message

[hueniverse]

Note that error.type is not error.code.