In Angular Ionic project if you are getting the following warning
Usage of '~' in imports is deprecated
The solution is to remove all the starting ~ tild in the imports of all your scss files.
Example:
Old:
@import "~@ionic/angular/css/core.css";
Updated one:
@import "@ionic/angular/css/core.css";
The Usage of ‘~’ in imports is deprecated warning will be fixed on next build.