index.js

import { NativeModules, Platform } from "react-native";

const { ReactNativeExceptionHandler } = NativeModules;

const noop = () => { };

export const setJSExceptionHandler = (customHandler = noop, allowedInDevMode = false) => {
  if (typeof allowedInDevMode !== "boolean" || typeof customHandler !== "function"){
    console.log("setJSExceptionHandler is called with wrong argument types.. first argument should be callback function and second argument is optional should be a boolean");
    console.log("Not setting the JS handler .. please fix setJSExceptionHandler call");
    return;
  }
  const allowed = allowedInDevMode ? true : !__DEV__;
  if (allowed) {
    global.ErrorUtils.setGlobalHandler(customHandler);
    console.error = (...error) => {
            let text = '';
            if (error) {
                if (error.message || error.stack) {
                    text = error.message + ' * ' + error.stack
                }
                else if (error.length > 0) {
                    for(let i=0; i<error.length;i++){
                        if(error[i].message || error[i].stack){
                            text += error[i].message + ' * ' + error[i].stack
                        }
                        else{
                            text+= error[i];
                        }
                    }
                }
            }

            global.ErrorUtils.reportError(text);
        } // sending console.error so that it can be caught
  } else {
    console.log("Skipping setJSExceptionHandler: Reason: In DEV mode and allowedInDevMode = false");
  }
};

export const getJSExceptionHandler = () => global.ErrorUtils.getGlobalHandler();

export const setNativeExceptionHandler = (customErrorHandler = noop, forceApplicationToQuit = true, executeDefaultHandler = false) => {
  if (typeof customErrorHandler !== "function" || typeof forceApplicationToQuit !== "boolean") {
    console.log("setNativeExceptionHandler is called with wrong argument types.. first argument should be callback function and second argument is optional should be a boolean");
    console.log("Not setting the native handler .. please fix setNativeExceptionHandler call");
    return;
  }
  if (Platform.OS === "ios") {
    ReactNativeExceptionHandler.setHandlerforNativeException(executeDefaultHandler, customErrorHandler);
  } else {
    ReactNativeExceptionHandler.setHandlerforNativeException(executeDefaultHandler, forceApplicationToQuit, customErrorHandler);
  }
};

export default {
  setJSExceptionHandler,
  getJSExceptionHandler,
  setNativeExceptionHandler
};