ServerTimestamp

@propertyWrapper
public struct ServerTimestamp<Value>: Codable
  where Value: ServerTimestampWrappable & Codable

extension ServerTimestamp: Equatable where Value: Equatable

extension ServerTimestamp: Hashable where Value: Hashable

A property wrapper that marks an Optional<Timestamp> field to be populated with a server timestamp. If a Codable object being written contains a nil for an @ServerTimestamp-annotated field, it will be replaced with FieldValue.serverTimestamp() as it is sent.

Example:

struct CustomModel {
  @ServerTimestamp var ts: Timestamp?
}

Then writing CustomModel(ts: nil) will tell server to fill ts with current timestamp.