TypeScript 4.9 - satisfies, улучшение in и NaN

New operator and typing improvements. Everything you need to know about the new TypeScript 4.9 release. 🔗 Links: My Telegram channel: https://t.me/purple_code_channel TypeScript 4.9 beta announcement: https://devblogs.microsoft.com/typesc... ⚡ My courses My TypeScript course: https://purpleschool.ru/course/typesc... All my courses: https://purpleschool.ru/?utm_source=y... Video Sections: 0:00 - Introduction 0:11 - Satisfies and its Uses 5:12 - Improving the in Operator 8:25 - Comparison with NaN 9:28 - Conclusion