Seems like a no brainer but I can't figure how to add a constraint to forbid the existence of a key in Joi, please how do I do this.
const data = {foo: 'xyz', bar: '123'};
const schema = {
foo: Joi.string(),
// how do i forbid bar
bar: Joi.forbid()
};
const { error } = Joi.object(schema).validate(data)
Use forbidden: https://joi.dev/api/?v=17.4.2#anyforbidden
const schema = {
a: Joi.any().forbidden()
};
you can simple delete the key from the object :
1st Method : delete data.bar
2nd method : {bar,...schema}=data