How to fix Failed to fetch platform cordova-ios@~4.4.0

I have resolved this, it appears to be an NPM issue and not a Cordova one. I just updated NPM within Terminal and after the update "cordova platform add ios" worked fine. Happy days - 1 !

npm update -g

1. Delete the folder cordova-ios, located in node_modules/cordova-ios.

2. Type the following command

   ionic cordova build ios
   

Sometimes a previously added Platform is not removed Properly, so this type of issue occurs. Remove the platform by command and add it again..

Follow this steps:

1. Run the command

    ionic cordova platform remove ios
   

2. Run the command:

    ionic cordova platform add ios --save
   

3. If you are still getting the issue, try running again:

    ionic cordova platform remove ios --save
   

NOTE: By running again the command ionic cordova platform remove ios --save fetches newer version of ios platform.
For example:

• First time: cordova-fetch for cordova-ios@~4.5.1
• Second time: cordova-fetch for cordova-ios@~4.5.4