npm and error messages

node_modules/core-js/modules/_parse-float.js

@@ -0,0 +1,8 @@
+var $parseFloat = require('./_global').parseFloat;
+var $trim = require('./_string-trim').trim;
+
+module.exports = 1 / $parseFloat(require('./_string-ws') + '-0') !== -Infinity ? function parseFloat(str) {
+  var string = $trim(String(str), 3);
+  var result = $parseFloat(string);
+  return result === 0 && string.charAt(0) == '-' ? -0 : result;
+} : $parseFloat;