lkster / safetify Goto Github PK

type Person = {
    FirstName: string,
    LastName: string,
    Age: number
};

const person: Person = {
    FirstName: "John",
    LastName: "Dorian",
    Age: 30
};

// Potentially, this comes from a user end-point (i.e. we cannot rely on the type being proper)
const unsafePersonUpdate: Partial<Person> = {
    Age: 31
};

const personUpdateResolver: PartialResolver<Person> = PartialResolver<Person>({
    FirstName: StringResolver(),
    LastName: StringResolver(),
    Age: NumberResolver()
});

const resolveResponse = personUpdateResolver.resolve(unsafePersonUpdate);

const safeUpdate = resolveResponse.result;

const updatedPerson: Person = {
    ...person,
    ...safeUpdate
};

// And then maybe store a safe value somewhere
database.store(updatedPerson);