So siehts ganz gut aus !

node_modules/core-js/modules/es6.math.atanh.js

@@ -0,0 +1,10 @@
+// 20.2.2.7 Math.atanh(x)
+var $export = require('./_export');
+var $atanh = Math.atanh;
+
+// Tor Browser bug: Math.atanh(-0) -> 0
+$export($export.S + $export.F * !($atanh && 1 / $atanh(-0) < 0), 'Math', {
+  atanh: function atanh(x) {
+    return (x = +x) == 0 ? x : Math.log((1 + x) / (1 - x)) / 2;
+  }
+});