So let's say I have
type Link = {
text: string;
link: string;
}
interface BigLink extends Link {
some: number;
something: string;
else: string;
}
but I have a variable that shares all these properties except that the link property can be optional.
I don't want to create a whole new type just to change one field to link?: string.
Is there a way to do something like
type OptionalBigLink = BigLink & { link?: string }
so that I can overwrite the link field and make it optional. ^ The above code still throws an error when I don't pass in the link property.
Yes you can.
type OptionalBigLink = Partial<Pick<BigLink, "link">> & Omit<BigLink, "link">;
Some tests in the playground
You can use Omit to remove the property from BigLink and then do the intersection.
type OptionalBigLink = Omit<BigLink, "link"> & { link?: string }