bug: ionic vue vscode incorrectly warning about deprecated slots · Issue #22236 · ionic-team/ionic-framework · GitHub
Bug Report Ionic version: [x] 5.x Ionic Vue version: 0.4.0 Current behavior: Ionic components rely upon Slot attributes which is deprecated in V3 in favor of the v-slot template directive. Expected behavior: Compliance with V3 Steps to r...
Built-in Directives
The v-slot directive was introduced in Vue 2.6.0, offering an improved, alternative API to the still-supported slot and slot-scope attributes.
Vue v-slot - w3schools.com
The release of Vue 2.6 introduces a unified v-slot directive which can be used for normal or scoped slots. In this case, since you're using the default, unnamed slot, the property can be accessed via v-slot="{ signal }" ...