react-native-mmkv VS flipper

react-native-mmkv is a wrapper around MMKV that allows you to easily implement secure storage in your app. It is arguably the fastest key-value storage for React Native apps

Why do you need to access the db from the file system? Can you just use something like https://github.com/mrousavy/react-native-mmkv ?

By using libraries like Reanimated, React Native MMKV, and React Native Skia, you leverage the native thread. However, I know there are developers building amazing things who think outside the box. I'm always thrilled when I read engineering blogs from companies like Netflix, Meta, and Shopify. They create solutions beyond the limits.

mmkv is not really designed to be used for “heavy” writes, or often changing values. But more as e.g. NSUserDefaults. The storage keeps growing over time which may cause memory issues if used wrongly. Here’s a related github issue: https://github.com/mrousavy/react-native-mmkv/issues/440

Persistence - React Native MMKV (supports encryption natively and easily integrates with TanStack Query via persistQueryClient)

if you need to store something small and simple use whatever. if is complex and speed is important use something performant. realmDB, https://github.com/mrousavy/react-native-mmkv and others are good fit for the job.

Screw you all, I'll use MMKV as my Local DB: please do not, as explained here.

Try react native mmkv https://github.com/mrousavy/react-native-mmkv

Definitely switch to VS Code! I personally don't use the built in VS Code debugger, but check out Flipper as another option. It's got a lot of great tools and plugins for debugging. The Layout Inspector will be what you are looking for if you want to inspect the styling specifically.

I use Flipper with its Layout Inspector plugin

Also no folder show on sources filesystem (in Hermes Debugger) as described here: https://github.com/facebook/flipper/issues/4530

Very useful and beautiful and simply , my suggestion is to use this Flipper

You may also want to look into custom Flipper plugins to instrument your app.

Some development tools for the web are similar (Chrome debugger, mostly) to those for React Native, but other aspects are very different (working with the metro bundler, using Flipper, AsyncStorage debugging, more). Some techniques developers will use are the same (breakpoints and console logging), but others are different (knowing when to restart the packager vs reinstall the app on device).

from the GitHub, and has existed under the name flipper since mid 2018

It's not possible to use a browser to debug a JSI app, use Flipper (for android Flipper also has SQLite Database explorer).

Try to debug it with adb logcat or Android Studio or Flipper you'll find the error why is crashing :)