named slots
Learn SvelteKit - Part 2: Routing In SvelteKit | egghead.io
Yes, many frameworks including svelte took heavy inspiration from various parts of the Web Components specs, including named slots.
Vue Component Slots - A Vue.js Lesson From our Vue.js Course: ...
Slots are an awesome feature of Vue with various levels of functionality including slot defaults, named slots, and scoped slots.
Course: Scoped Slots in Vue.js - Vue School
A run-through of default, named, scoped and dynamic scoped slots in Vue.js ... But that’s not all! We’ll take a run-up to dynamic scoped slots through the following ...