Joi when require is

[throrin19]

I have a problem with Joi When usage.

the when must be use with 2 cases :

• Directly with other object field
• With specific Joi schema

The problem with the second type. For example I have this schema :

Joi.when(Joi.object({ type : 'model' }).unknown(), {
    then        : Joi.object().keys(modelObject),
    otherwise   : Joi.object().keys(mathObject),
})

This schema switch full result schema when one specific field has specific value.

In my case, I can't use the is option but your library force this option and ignore the second when use case.

If I comment this part it works fine :

joi-to-json-schema/src/index.js

Lines 17 to 19 in 4de6452

	if (!match.is) {
	throw new Error('joi.when requires an "is"');
	}