Support generic validation library to validate config

[xballoy]

Is there an existing issue that is already proposing this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe it

Schema validation can only be done using Joi or using a custom validation function.

Describe the solution you'd like

I suggest supporting Standard Schema to be able to use any validation library without the need pass a custom validation function.

Teachability, documentation, adoption, migration strategy

We could add a new property standardValidationSchema for example.

Note: I opened a PR in Joi so it would support this new property. Only drawback is we won't be able to pass custom options.

What is the motivation / use case for changing the behavior?

Allow to use the same schema in all the app without being forced to use Joi.

[xballoy]

I could work on this feature.

[kamilmysliwiec]

Thanks for your suggestion!

There are no plans to implement it in the foreseeable future.

If you think your request could live outside Nest's scope, we'd encourage you to collaborate with the community on publishing it as an open source package.