update build config

.babelrc

@@ -1,11 +1,17 @@
 {
   "presets": [
-    ["@babel/preset-env", {
+    [
-      "useBuiltIns": "usage",
+      "@babel/preset-env",
-      "corejs": {
+      {
-        "version": 3,
+        "useBuiltIns": "usage",
-        "proposals": true
+        "exclude": [
+          "@babel/plugin-transform-classes"
+        ],
+        "corejs": {
+          "version": 3,
+          "proposals": true
+        }
       }
-    }]
+    ]
   ]
 }

.browserslistrc

@@ -0,0 +1,7 @@
+last 2 chrome versions
+last 2 and_chr versions
+last 2 edge versions
+last 2 ff versions
+last 2 and_ff versions
+last 2 safari versions
+last 2 ios_saf versions

package.json

@@ -12,7 +12,7 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
-    "@babel/core": "^7.7.7",
+    "@babel/core": "^7.8.4",
     "@babel/preset-env": "^7.8.3",
     "autoprefixer": "^9.7.4",
     "parcel": "^1.12.4",
@@ -26,18 +26,16 @@
   "dependencies": {
     "@popperjs/core": "^2.0.6",
     "copy-to-clipboard": "^3.2.1",
-    "core-js-pure": "^3.6.4",
+    "core-js": "^3.6.4",
     "date-fns": "^2.9.0",
     "get-urls": "^9.2.0",
     "iter-tools": "^7.0.0-rc.0",
+    "regenerator-runtime": "^0.13.3",
     "route-parser": "0.0.5",
     "svelte-pipeable-store": "^1.0.3",
     "svelte-portal": "^0.1.0",
     "svelte-routing": "^1.4.0"
   },
-  "browserslist": [
-    "last 1 chrome versions"
-  ],
   "staticFiles": {
     "staticPath": "public",
     "watcherGlob": "**"

src/main.js

@@ -1,3 +1,7 @@
+import 'core-js/stable'
+import 'core-js/proposals'
+import 'regenerator-runtime/runtime'
+
 import App from '/components/App.svelte'
 
 const app = new App({

src/services/mastodon.js

@@ -1,7 +1,3 @@
-import Observable from 'core-js-pure/features/observable'
-import getUrls from 'get-urls'
-import { urlsToMedia } from '/services/misc.js'
-
 const LINK_RE = /<(.+?)>; rel="(\w+)"/gi
 
 function parseLinkHeader(linkHeader) {