Have you transitioned from Vue 2 to Vue 3 and participated in the migration? Can you tell more details?

When transitioning from Vue 2 to Vue 3, the main focus was on the following aspects:

• Composition API: Instead of the options data, methods, computed, Vue 3 actively uses the Composition API, which improves code reuse and readability. During migration, some components were rewritten using setup().

• Dependency updates: Many third-party libraries and plugins required updates or replacements, as not all supported Vue 3 immediately.

• Reactivity changes: Vue 3 uses Proxy for reactivity, which eliminates some limitations of Vue 2. During migration, it was checked that reactive data was tracked correctly.

• Slots and event handling: The syntax for slots and events changed in Vue 3, for example, the .native modifier is no longer needed.

• Migration tools: The official Vue Migration Helper plugin was used to identify potential issues.

Example of using the Composition API:

import { ref, computed } from 'vue';

export default {
  setup() {
    const count = ref(0);
    const double = computed(() => count.value * 2);
    function increment() {
      count.value++;
    }
    return { count, double, increment };
  }
}

Overall, migration required a phased approach: first updating infrastructure and dependencies, then gradually refactoring components and testing.