When trying to assign Required<T> (where T extends A) to Required<A>, the operation fails.
Consider this simplified example:
type A = { a?: number };
type B<T extends Required<A>> = T;
type C<T extends A> {
b: B<Required<T>>;
}
Although it seems like it should work, I encountered an error that says
Type 'Required<T>' does not satisfy the constraint 'Required<A>'The issue here lies in the definition of T using <T extends A>, which allows for an empty object to be a valid type for T. This can cause problems as shown below:
To rectify this, modify your type C like so:
type C<T extends A> = {
b: Required<T>;
}
With this change, you will be able to successfully implement it by doing:
let c: C<{}> = {
b: {},
}
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