So siehts ganz gut aus !

node_modules/core-js/modules/es7.math.iaddh.js

@@ -0,0 +1,11 @@
+// https://gist.github.com/BrendanEich/4294d5c212a6d2254703
+var $export = require('./_export');
+
+$export($export.S, 'Math', {
+  iaddh: function iaddh(x0, x1, y0, y1) {
+    var $x0 = x0 >>> 0;
+    var $x1 = x1 >>> 0;
+    var $y0 = y0 >>> 0;
+    return $x1 + (y1 >>> 0) + (($x0 & $y0 | ($x0 | $y0) & ~($x0 + $y0 >>> 0)) >>> 31) | 0;
+  }
+});