swift-corelibs-foundationで壊れていたDate, DateComponentsのnanosecond周りがSwift 5.0で直ったぽい。 @swift-4.2.4 @swift-5.0.3

import Foundation let now = Date() let comp = Calendar(identifier: .gregorian).dateComponents(in: .current, from: now) let recreatedDate = Calendar(identifier: .gregorian).date(from: comp) print(now.timeIntervalSinceReferenceDate == recreatedDate?.timeIntervalSinceReferenceDate)