interface User {
    id: string;
    email: string;
}

const assertUser = ow.create('User', ow.object.partialShape({
    id: ow.string.nonEmpty,
    email: ow.string.nonEmpty,
}))

interface Person extends User {
    firstName: string;
    lastName: string;
}

const assertPerson = ow.create('Person', ow.object.partialShape({
    id: ow.string.nonEmpty,
    email: ow.string.nonEmpty,
    firstName: ow.string.nonEmpty,
    lastName: ow.string.nonEmpty,
}))