So siehts ganz gut aus !

node_modules/core-js/library/modules/es6.number.is-finite.js

@@ -0,0 +1,9 @@
+// 20.1.2.2 Number.isFinite(number)
+var $export = require('./_export');
+var _isFinite = require('./_global').isFinite;
+
+$export($export.S, 'Number', {
+  isFinite: function isFinite(it) {
+    return typeof it == 'number' && _isFinite(it);
+  }
+});