Angular – Failed to install ‘cordova-plugin-firebase’: CordovaError: Using “requireCordovaModule” to load non-cordova

I am trying to perform phone authentication using firebase in my app(ionic V-4).After creating the app, I just added the android/ios platforms using the below commands:

 ionic cordova platform add android
 ionic cordova platform add ios
Then tried to install firebase plugin like this:
ionic cordova plugin add cordova-plugin-firebase
It is throwing this error:
I am developing the app in windows.
You are using cordova 9, and in that version requireCordovaModule was deprecated for non cordova modules and thats why you get the following error.
You need to navigate to the following js file in your environment:
https://github.com/arnesson/cordova-plugin-firebase/blob/master/scripts/ios/helper.js#L33
and change:
var xcode = context.requireCordovaModule("xcode");
into this ( since xcode is an npm package):
var xcode = require("xcode");
Related Solutions
Cordova – Install cordova plugin for ONE platform only

I've found that the only clean way to make it work is to modify 3 things:


Edit the plugins/PLATFORM.js file (ex. plugins/android.js) and remove the plugin object from the "installed_plugins" array

Do the same for the platforms/PLATFORM/www/cordova_plugins.js file where PLATFORM could be ios, blackberry10, firefoxos etc. In the android case will be inside assets/www instead of just www

Last step is to delete the plugin directory inside platforms/PLATFORM/www/plugins/. In your case again it will be assets/www and not just www
    
Android – Failed to install ‘cordova-plugin-firebase’: CordovaError: Uh oh

according to issue #25 ...
  
in your config.xml first install cordova-plugin-firebase then cordova-plugin-push-notification or phonegap-plugin-push. make sure to first remove both plugins from plugins folder after removing platform.
this is because these two plugins clash, because both attempt to install that file.