does anyone know if it exists an IDE with code completion for slim ?
I use phpstorm and all methods from the package are marked as unknown and there is no intellisense.
this should definitely work. If you’ve added the slim framework with composer, be sure to reopen your project so phpstorn can process the new files.
I can recommend to follow the tutorial from https://www.slimframework.com/docs/tutorial/first-app.html: Then you should not experience problems like this, and your folder structure will be optimal.