How to allow any other key in Joi [duplicate]

Question

I have a simple requirement. I tried to search on the internet as well as documentation but failed.
So here is what I want to achieve:

I have a schema:

const schema = Joi.object().keys({   a: Joi.string().required(),   b: Joi.string().required() }); 

Now, How do I configure it such that any other key in the object would be allowed?

With this schema, it only allows two keys a and b. If I pass any other key, say, c, it throws an error saying that c is not allowed.

Answer 1

The correct answer is actually to use object.unknown(true).

const schema = Joi.object().keys({   a: Joi.string().required(),   b: Joi.string().required() }).unknown(true);