proc entityId[T](id: Id[T]): EntityId

proc `of`[T](id: EntityId; desc: typedesc[T]): Id[T]

proc `of`[T](id: Id[auto]; desc: typedesc[T]): Id[T]

template components[T: tuple](world: var World; id: Id[T]): auto

template has[T](world: var World; id: Id[T]): bool

template read[T: tuple](world: var World; id: Id[T]): T

template read[T](world: var World; id: Id[T]): T

template remove[T: tuple](world: var World; id: Id[T];
                          mode: OperationMode = Deferred)

template remove[T](world: var World; id: Id[T]; mode: OperationMode = Deferred)

template write[T](world: var World; id: Id[T]): var T