flowtype - Flow: Subset of properties for object type -

when defining object type, there way derive type subset of properties? instance, given type:

type user = {     id: number,     name: string };

i'd write like:

$subset<user, ["id"]>

which equivalent to:

{id: number}

the best come using $propertytype:

{id: $propertytype<user, "id">}

although doesn't guarantee consistent property names.

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