@eunjae-lee/vue-demi

This is a fork of vue-demi.

The original version intends two use cases:

1. Vue2 + composition api
2. Vue3

However, this fork removes the composition api. It is useful when your library doesn't use any composition api but still need to check vue version and use different APIs accordingly.

import { isVue3, h } from 'vue-demi';

...

render(createElement) {
  return (isVue3 ? h : createElement)(...)
}

In case of Vue 2, this forked vue-demi will export all the Vue3-only APIs as undefined, such as h, createApp, defineComponent, and so on.

import from vue vs vue-demi?

When to import from vue and when to import from vue-demi?

• If you need access to isVue3, isVue2, Vue2, or version, then they all are in vue-demi.
• If you need Vue3-only APIs, import them from vue-demi along with isVue3 variable. If it's used with Vue3, the APIs will work. If with Vue2, they will be undefined.
• Other than that, keep your imports from vue.