Parse string into Date type

[Tyrubias]

I'm wrapping a REST API into a GraphQL endpoint. The REST API returns a string where I want a Date. If I try to declare the field as a Date, I get the error Unable to serialize value '2020-10-13T08:17:46.832Z' as it's not an instance of 'Date.

My schema:

@ObjectType()
class Widget {
    @Field(() => Date)
    updatedAt: string
}

How should I get GraphQL to parse the Date string and not serialize it?

[MichalLytek]

Date is Date, the JS new Date().
If you want to treat string as date, just do @Field(() => String) or find another GraphQL scalar that accepts strings and numbers as a valid date value.
JSON is not capable of transporting Date type, it has to be serialized.