firebase-ios-sdk/Firestore/third_party/FirestoreEncoder/METADATA

name: "Swift stdlib"
description:
  "This is the FirestoreEncoder and FirestoreDecoder, which are heavily "
  "modified derivatives of the JSONEncoder and JSONDecoder from the Swift "
  "stdlib's Foundation framework."

third_party {
  url {
    type: HOMEPAGE
    value: "https://swift.org/"
  }
  url {
    type: GIT
    value: "https://github.com/apple/swift"
  }
  version: "swift-DEVELOPMENT-SNAPSHOT-2019-09-04-a"
  last_upgrade_date { year: 2019 month: 9 day: 6 }
  license_type: NOTICE
}