Patch from euvl#814

src/Plugin.js

@@ -3,14 +3,14 @@ import Dialog from './components/Dialog.vue'
 import PluginCore from './PluginCore'
 
 const Plugin = {
-  install(Vue, options = {}) {
-    if (Vue.prototype.$modal) {
+  install(app, options = {}) {
+    if (app.config.globalProperties.$modal) {
       return
     }
 
-    const plugin = new PluginCore(Vue, options)
+    const plugin = PluginCore(app, options)
 
-    Object.defineProperty(Vue.prototype, '$modal', {
+    Object.defineProperty(app.config.globalProperties, '$modal', {
       get: function() {
         /**
          * The "this" scope is the scope of the component that calls this.$modal
@@ -19,29 +19,30 @@ const Plugin = {
         /**
          * The this.$modal can be called only from inside the vue components so this check is not really needed...
          */
-        if (caller instanceof Vue) {
+        // if (caller instanceof app) {
           const root = caller.$root
 
           if (!plugin.context.root) {
-            plugin.setDynamicModalContainer(root)
+            plugin.setDynamicModalContainer(root, app)
           }
-        }
+        // }
 
         return plugin
       }
     })
+    app.provide('$modal', plugin)
 
     /**
      * Sets custom component name (if provided)
      */
-    Vue.component(plugin.context.componentName, Modal)
+    app.component(plugin.context.componentName, Modal)
 
     /**
      * Registration of <Dialog/> component
      */
     if (options.dialog) {
       const componentName = options.dialogComponentName || 'VDialog';
-      Vue.component(componentName, Dialog);
+      app.component(componentName, Dialog);
     }
   }
 }

src/PluginCore.js

@@ -1,14 +1,24 @@
 import { UNSUPPORTED_ARGUMENT_ERROR } from './utils/errors'
 import { createDivInBody } from './utils'
 import ModalsContainer from './components/ModalsContainer.vue'
-
-const PluginCore = (Vue, options = {}) => {
-  const subscription = new Vue()
+import emitter from 'tiny-emitter/instance'
+import {createVNode, render} from 'vue'
+
+const PluginCore = (app, options = {}) => {
+  const subscription = {
+    $on: (...args) => emitter.on(...args),
+    $once: (...args) => emitter.once(...args),
+    $off: (...args) => emitter.off(...args),
+    $emit: (...args) => emitter.emit(...args),
+  }
 
   const context = {
     root: null,
     componentName: options.componentName || 'Modal'
   }
+  subscription.$on('set-modal-container', container => {
+    context.root.__modalContainer = container
+  })
 
   const showStaticModal = (name, params) => {
     subscription.$emit('toggle', name, true, params)
@@ -37,17 +47,17 @@ const PluginCore = (Vue, options = {}) => {
    * Creates a container for modals in the root Vue component.
    *
    * @param {Vue} parent
+   * @param {Vue} app
    */
-  const setDynamicModalContainer = parent => {
+  const setDynamicModalContainer = ((parent, app) => {
     context.root = parent
 
     const element = createDivInBody()
 
-    new Vue({
-      parent,
-      render: h => h(ModalsContainer)
-    }).$mount(element)
-  }
+    const vnode = createVNode(ModalsContainer)
+    vnode.appContext = app._context
+    render(vnode, element)
+  })
 
   const show = (...args) => {
     const [modal] = args

src/components/Dialog.vue

@@ -31,7 +31,7 @@
         :key="index"
         v-html="button.title"
         @click.stop="click(index, $event)"
-      >{{ button.title }}</button>
+      />
     </div>
     <div v-else class="vue-dialog-buttons-none" />
   </component>
@@ -52,6 +52,7 @@ export default {
       type: String
     }
   },
+  inject: ['$modal'],
   data() {
     return {
       params: {}

src/components/Modal.vue

@@ -77,6 +77,7 @@ const TransitionState = {
 
 export default {
   name: 'VueJsModal',
+  inject: ['$modal'],
   props: {
     name: {
       required: true,
@@ -263,7 +264,7 @@ export default {
   /**
    * Removes global listeners
    */
-  beforeDestroy() {
+  beforeUnmount() {
     this.$modal.subscription.$off('toggle', this.onToggle)
 
     window.removeEventListener('resize', this.onWindowResize)
@@ -498,7 +499,9 @@ export default {
 
     beforeModalTransitionLeave() {
       this.modalTransitionState = TransitionState.Leaving
-      this.resizeObserver.unobserve(this.$refs.modal)
+      if (this.$refs.modal) {
+        this.resizeObserver.unobserve(this.$refs.modal)
+      }
 
       if (this.$focusTrap.enabled()) {
         this.$focusTrap.disable()

src/components/ModalsContainer.vue

@@ -40,6 +40,7 @@ export default {
      * Register ModalContainer so that it was availiable inside the plugin
      */
     this.$root.__modalContainer = this
+    this.$modal.subscription.$emit('set-modal-container', this)
   },
   mounted() {
     this.$modal.subscription.$on('hide-all', () => {