chore: drop @babel/polyfill in favour of core-js@3 and regenerator-runtime

Author: xidedix

.babelrc.js

@@ -12,6 +12,7 @@ module.exports = {
           ]
         },
         useBuiltIns: 'usage',
+        corejs: { version: 3, proposals: true },
         loose: true,
         modules: false,
         exclude: ['transform-typeof-symbol']

.eslintrc.json

@@ -13,7 +13,7 @@
     "no-extra-parens": "error",
     "no-prototype-builtins": "error",
     "no-template-curly-in-string": "error",
-    "compat/compat": "error",
+    "compat/compat": "warn",
     "valid-jsdoc": "error",
 
     // Best Practices

js/dist/polyfill.js

@@ -1,6 +1,6 @@
 {
   "name": "@coreui/coreui",
-  "version": "2.1.9",
+  "version": "2.1.10",
   "description": "Open Source UI Kit built on top of Bootstrap 4",
   "keywords": [
     "bootstrap",
@@ -119,7 +119,7 @@
     "popper.js": "^1.14.3"
   },
   "engines": {
-    "node": ">= 8",
+    "node": ">= 8.7",
     "npm": ">= 5"
   },
   "browserslist": [