Upgrade NEW IONIC Windows Command:

Update: As of 4/27/2020, the new CLI is now renamed to package name (@ionic/cli) - more information found at: https://twitter.com/ionicframework/status/1223268498362851330

Update To New Ionic CLI

  • 1. Uninstall the old CLI from your system. [example: Windows]

    • npm uninstall -g ionic
  • 2. Install New Ionic CLI

    • npm install -g @ionic/cli
  • 3. Start Ionic

    • ionic start
  • 3. Optional: Generate icon or splash screens locally

    • npm install -g cordova-res

This is the output I got during my update:

npm WARN deprecated [email protected]: The Ionic CLI now uses ✨ @ionic/cli ✨ for its package name! https://twitter.com/ionicframework/status/1223268498362851330
npm WARN deprecated [email protected]: request has been deprecated, see https://github.com/request/request/issues/3142
npm WARN deprecated [email protected]: This module moved to @hapi/hawk. Please make sure to switch over as this distribution is no longer supported and may contain bugs and critical security issues.
npm WARN deprecated [email protected]: This module moved to @hapi/sntp. Please make sure to switch over as this distribution is no longer supported and may contain bugs and critical security issues.
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: This version has been deprecated in accordance with the hapi support policy (hapi.im/support). Please upgrade to the latest version to get the best features, bug fixes, and security patches. If you are unable to upgrade at this time, paid support is available for older versions (hapi.im/commercial).
npm WARN deprecated [email protected]: Use uuid module instead
C:\Users\$USER\AppData\Roaming\npm\cordova -> C:\Users\$USER\AppData\Roaming\npm\node_modules\cordova\bin\cordova
C:\Users\$USER\AppData\Roaming\npm\ionic -> C:\Users\$USER\AppData\Roaming\npm\node_modules\ionic\bin\ionic
+ [email protected]
+ [email protected]
added 49 packages from 51 contributors, removed 27 packages and updated 203 packages in 65.319s

hope that helps