React native app crashes in iOS release mode only-CodePudding

I am getting the following error when the app run on release mode. This crash happens when the time of app launching in simulator

Terminating app due to uncaught exception 'RCTFatalException: Unhandled JS Exception: TypeError: undefined is not an object (evaluating 't.insertRule=function(t,n){return t<=this.length&&(this.rules.splice(t,0,n),this.length ,!0)}')', reason: 'Unhandled JS Exception: TypeError: undefined is not an object (evaluating 't.insertRule=function(t,n){return t<=this.length&&(this.rules.splice(t,0,n),this.length ,!0)}'), stack:

At the same time this app working fine on debug mode.

Can you help me how to solve the issue appeared in release mode?

CodePudding user response：

You have an uncaught exception in your js bundle code. You have to fix it also for debug mode. But in release mode, uncaught exception triggers a crash.

CodePudding user response：

We have analyzed each and every library in the app and it is using 'ThemeProvider' package.

It should be imported like the following into the mobile base app.

import { ThemeProvider } from "styled-components/native";