Click and Collect is becoming more and more popular nowadays. During the COVID-19 pandemic it became crucial to move from classic retail to e-commerce. Some of you tried this service when using apps such as Żappka or Tesco Click and Collect. Most of the apps available in the App Store or the Google Play Store were built natively, so we tried to create our Click and Collect app using React Native to speed up the development process.
What is RxJS? RxJS is a library for composing asynchronous and event-based programs by using observable sequences. It provides one core type, the Observable, satellite types (Observer, Schedulers, Subjects), and operators inspired by Array#extras (map, filter, reduce, every, etc.) to allow handling asynchronous events as collections.