Added polyfills for EventTarget (needed for Safari) and CustomEvent (needed for IE)

package.json

@@ -43,6 +43,7 @@
     "@babel/plugin-transform-runtime": "^7.7.6",
     "@babel/preset-env": "^7.7.6",
     "@babel/register": "^7.7.4",
+    "@ungap/event-target": "^0.1.0",
     "@vue/babel-helper-vue-jsx-merge-props": "^1.0.0",
     "@vue/babel-plugin-transform-vue-jsx": "^1.1.2",
     "@vue/test-utils": "^1.0.0-beta.26",
@@ -56,6 +57,7 @@
     "connect-history-api-fallback": "^1.1.0",
     "cross-spawn": "^4.0.2",
     "css-loader": "^0.28.0",
+    "custom-event-polyfill": "^1.0.7",
     "eslint": "^5.16.0",
     "eslint-config-standard": "^12.0.0",
     "eslint-friendly-formatter": "^2.0.5",

src/lib/event_target_polyfill.js

+import EventTargetPolyfill from '@ungap/event-target'
+
+try {
+  /* eslint-disable no-new  */
+  new EventTarget()
+  /* eslint-enable no-new  */
+} catch (e) {
+  window.EventTarget = EventTargetPolyfill
+}

src/main.js

@@ -2,6 +2,9 @@ import Vue from 'vue'
 import VueRouter from 'vue-router'
 import Vuex from 'vuex'
 
+import 'custom-event-polyfill'
+import './lib/event_target_polyfill.js'
+
 import interfaceModule from './modules/interface.js'
 import instanceModule from './modules/instance.js'
 import statusesModule from './modules/statuses.js'

yarn.lock

@@ -710,6 +710,11 @@
   dependencies:
     qrcode "^1.3.0"
 
+"@ungap/event-target@^0.1.0":
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/@ungap/event-target/-/event-target-0.1.0.tgz#88d527d40de86c4b0c99a060ca241d755999915b"
+  integrity sha512-W2oyj0Fe1w/XhPZjkI3oUcDUAmu5P4qsdT2/2S8aMhtAWM/CE/jYWtji0pKNPDfxLI75fa5gWSEmnynKMNP/oA==
+
 "@vue/babel-helper-vue-jsx-merge-props@^1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@vue/babel-helper-vue-jsx-merge-props/-/babel-helper-vue-jsx-merge-props-1.0.0.tgz#048fe579958da408fb7a8b2a3ec050b50a661040"
@@ -2281,6 +2286,11 @@ currently-unhandled@^0.4.1:
   dependencies:
     array-find-index "^1.0.1"
 
+custom-event-polyfill@^1.0.7:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/custom-event-polyfill/-/custom-event-polyfill-1.0.7.tgz#9bc993ddda937c1a30ccd335614c6c58c4f87aee"
+  integrity sha512-TDDkd5DkaZxZFM8p+1I3yAlvM3rSr1wbrOliG4yJiwinMZN8z/iGL7BTlDkrJcYTmgUSb4ywVCc3ZaUtOtC76w==
+
 custom-event@~1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/custom-event/-/custom-event-1.0.1.tgz#5d02a46850adf1b4a317946a3928fccb5bfd0425"