The correct version of cocoapod and your plugin for cordova-ios 5.1.1 about cordova-plugin-firebase-authentication HOT 3 CLOSED

The problem lies in duplicating the same dependency with different versions. To solve this problem, you need to align your dependencies in the same version.

The process of installing a plugin with Cordova carry out in 2 stages; The first is to install the plugin at the Cordova project level; this is to register the plugin and its variables in the package.json and config.xml file, the installation of the node packages and the download of the plugin in the plugins folder. Cordova disperses the plugin to the installed platforms in the second stage, speaking of IOS cocoa pods in charge of performing this action.

So you can perform this process manually; when you run the installation of a plugin, and the error is in cocoapods, it means that it is in the second stage; you can go to the ios folder within platforms and execute:
pod install --verbose
You will get the same problem again but with a more detailed description of the error.

In your case, it will be because your plugins refer to different versions of Firebase.

To solve that, open the Podfile file, which is inside the ios folder, and it sets the same version in all dependencies that use Firebase.

Later, run again
pod install --verbose

If this worked, go back to the plugins folder within the main project and in the configuration of each plugin, set the same value with which you obtained a successful installation with pod install.

Now, if you want to save them in your project or ensure correct installation, you can use the variables:

ANDROID_FIREBASE_AUTH_VERSION
IOS_FIREBASE_AUTH_VERSION

To set the value, you need from the Cordova.

from cordova-plugin-firebase-authentication.

We send you a donation by PayPal, with transaction ID: 20452343773632487, for your time dedicated to making this plugin and responding to problems.
Thank you so much for everything.

from cordova-plugin-firebase-authentication.

@Radecom cordova-ios v6 is required because plugin uses variable (IOS_FIREBASE_AUTH_VERSION) to specify Firebase SDK version. Earlier versions of cordova-ios do not support such variables.

Version 3.3.1 is the latest that can be used with cordova-ios v5.

from cordova-plugin-firebase-authentication.