Strict mode for library

[batyshkaLenin]

Are you using OpenAPI 2, 3.0.X, or 3.1.0?
Version 3.0.0, but it doesn't matter, such functionality will be useful for all versions.

Would this solve a problem or make something easier?
Not only will I be able to enforce existing contracts using tests and Swagger, but I will also be able to "force" a developer to describe Swagger if they add a new field.

What would you like to happen?
Strict mode will allow you to check not only the fields that will return an endpoint when tested, but also those that are not described in the schema. That is, if I get extra fields that are not described in the schema, I want to get an error, and not get an error only if the fields described in Swagger have not changed.

Describe alternatives you've considered
Honestly, I don't see any alternatives

Additional context or screenshots
To enable this mode, for example, you could do the following

jestOpenAPI(path.resolve(__dirname, '../../src/openapi.yaml'), { mode: 'strict' });

Are you going to resolve the issue?
I'm not sure if I'm gonna make it

[DetachHead]

do you have "additionalProperties": false in your schema? when i do, it correctly fails to validate when an additional field is present.

https://json-schema.org/understanding-json-schema/reference/object#additional-properties