Add date-fns instead of moment

[svkorepanov]

Support plan

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

Context

• node version: 12.16.1
• module version: 2.0.1
• environment (e.g. node, browser, native): browser
• used with (e.g. hapi application, another framework, standalone, ...): react-hook-form, @hookform/resolvers/joi
• any other relevant information:

What problem are you trying to solve?

Recently I've faced with date validation via Joi, and luckily I found this library. But unfortunately there is a moment.js in deps and I don't want to bring this library in my project as a dependency. I guess a lot of developers don't want it either. I suggest moving to more modern date library such as date-fns instead of moment.js. And I would happy to help you with this.

Do you have a new or modified API suggestion to solve the problem?

[vicmars5]

Also, would be good to mention that moment js is deprecated.
https://momentjs.com/docs/

But my main questions would be: does date-fns use the same date format or API as moment.js? If it isn't, this change can break existing code bases if the update the joi-date version.

[Izabrr]

Hi 👋 Any update on this topic ?

[hueniverse]

I don't have time to do the work but if someone wants to open a PR for this, I'll review.

[Izabrr]

@hueniverse I opened this one