added nullish chaining operator

babel.config.js

package.json

src/pages/Download.vue

src/statics/app-logo-128x128.png

src/statics/icons/apple-icon-120x120.png

src/statics/icons/apple-icon-152x152.png

src/statics/icons/apple-icon-167x167.png

src/statics/icons/apple-icon-180x180.png

src/statics/icons/favicon-16x16.png

src/statics/icons/favicon-32x32.png

src/statics/icons/favicon-96x96.png

src/statics/icons/favicon.ico

src/statics/icons/icon-128x128.png

src/statics/icons/icon-192x192.png

src/statics/icons/icon-256x256.png

src/statics/icons/icon-384x384.png

src/statics/icons/icon-512x512.png

src/statics/icons/ms-icon-144x144.png

yarn.lock