Step 1:
Place debugger where ever you want to stop script, like:
async saveItem(item, selectedValue) {
debugger
try {
await AsyncStorage.setItem(item, selectedValue);
}
catch (error) {
console.error('AsyncStorage error: ' + error.message);
}
}
This will pause the debugger when ever control comes to this block of code.
Step 2:
Press Cmd+D on ios emulator and Cmd+M on Android simulator.
If you are having real device, shake the device to open dev menu, if you don't want to shake device follow this blog
Step 3:
Select Enable Remote JS Debugging, this will open Chrome
Step 4:
Select Developer Tools.
Step 5:
Your debugger is paused in Sources tab wherever you have written debugger within your code . Go to console and type any parameters you want to debug (that are present in the code block) like:
To move to next debugger point again move to Sources -> click on Resume script execution button (Right corner blue button)
Place the debugger, wherever you wanna pause the script.
Enjoy debugging!!