How to debug your React Native?

Follow the below steps to debug React Native app:

  1. Run your application in the iOS simulator.
  2. Press Command + D and a webpage should open up at http://localhost:8081/debugger-ui.
  3. Enable Pause On Caught Exceptions for a better debugging experience.
  4. Press Command + Option + I to open the Chrome Developer tools, or open it via View -> Developer -> Developer Tools.
  5. You should now be able to debug as you normally would.

What is reselect and how it works?

Reselect is a selector library (for Redux) which uses memoization concept. It was originally written to compute derived data from Redux-like applications state, but it can't be tied to any architecture or library.

Reselect keeps a copy of the last inputs/outputs of the last call, and recomputes the result only if one of the inputs changes. If the the same inputs are provided twice in a row, Reselect returns the cached output. It's memoization and cache are fully customizable.


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Made by Michael Sakhniuk

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