@sbh321/qcalendar/src/directives/Resize.js

A forked version of Jeff Galbraith's fork of Quasar UI QCalendar

export default {
  name: 'Resize',

  mounted (el, { modifiers, value }) {
    if (!value) return // callback
    const callback = value
    const options = modifiers || { passive: true }

    window.addEventListener('resize', callback, options)
    el._onResize = {
      callback,
      options
    }

    if (!modifiers || !modifiers.quiet) {
      callback()
    }
  },

  beforeUnmount (el) {
    if (!el._onResize) return

    const { callback, options } = el._onResize
    window.removeEventListener('resize', callback, options)
    delete el._onResize
  }
}