How to get resolved reference value of provided object instead of Ref Object in ValidationError ?

[Ahger]

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

Context

• node version: 16.13.0
• module version: 17.6.0
• environment (e.g. node, browser, native): Browser / Node
• used with (e.g. hapi application, another framework, standalone, ...): Standalone
• any other relevant information:

How can we help?

Hello, a little question. Im using schema like:

const validationResult = Joi.object({
  dateFrom: Joi.date().iso().max(Joi.ref('dateTo')).empty('').required(),
  dateTo: Joi.date().iso().empty('').required(),
}).validate({
  dateFrom: '2023-10-26',
  dateTo: '2023-10-25',
})

As expected it results with error like:

const { error } = validationResult;

expect(error).toBeInstanceOf(Error);
expect(error.name).toBe('ValidationError');
expect(error.details[0].context.limit).toEqual({
    adjust: null,
    in: false,
    iterables: null,
    map: null,
    separator: '.',
    type: 'value',
    render: true,
    ancestor: 1,
    path: ['dateTo'],
    depth: 1,
    key: 'dateTo',
    root: 'dateTo',
    display: 'ref:dateTo',
});

But that's a question: How can i get resolved value of reference ? In this case i expect to get somehow (not through render of error message or through error.local and ancestors hack) value of dateTo : new Date('2023-10-25'). Why do i need this: on client im taking limit value from error details context to format it and apply as localised value. (parsing through date-fns library becomes as Invalid Date cause of limit: {} - ref object, not a date value of reference.

I have forked repo to workaround and can fix my requirement by add extra field in the date base rule 'compare' like:

        compare: {
            method: false,
            validate(value, helpers, { date }, { name, operator, args }) {

                const to = date === 'now' ? Date.now() : date.getTime();
                if (Common.compare(value.getTime(), to, operator)) {
                    return value;
                }
                //   Adding extra property 'refValue' here
                return helpers.error('date.' + name, { limit: args.date, value, refValue: to });
            },
            args: [
                {
                    name: 'date',
                    ref: true,
                    normalize: (date) => {

                        return date === 'now' ? date : internals.parse(date);
                    },
                    assert: (date) => date !== null,
                    message: 'must have a valid date format'
                }
            ]
        },

Also, i need to fix ±25 tests with such changes.

[manojmula]

you have added lot of details to analyse, but I am not getting the exact output you are expecting here, so you are asking to get error to be more conscience in the user perspective?