v-calendar@next missing "popperjs" dependency

[heyglen]

Using the v-calendar Vue3 documentation

Installed v-calendar using yarn:

 yarn add v-calendar@next

Imported into my project:

import { DatePicker } from 'v-calendar';

and received an error:

> node_modules/v-calendar/lib/esm/index.js:6:7: error: Could not resolve "@popperjs/core" (mark it as external to exclude it from the bundle)
    6 │ import '@popperjs/core';
      ╵        ~~~~~~~~~~~~~~~~

 > node_modules/v-calendar/lib/esm/Popover.vue_vue&type=style&index=0&id=0652eeb9&lang-c768a42a.js:3:29: error: Could not resolve "@popperjs/core" (mark it as external to exclude it from the bundle)
    3 │ import { createPopper } from '@popperjs/core';
      ╵                              ~~~~~~~~~~~~~~~~

[Igloczek]

Duplicate of #853