add some packages

node_modules/core-js/modules/_date-to-iso-string.js

@@ -0,0 +1,26 @@
+'use strict';
+// 20.3.4.36 / 15.9.5.43 Date.prototype.toISOString()
+var fails = require('./_fails');
+var getTime = Date.prototype.getTime;
+var $toISOString = Date.prototype.toISOString;
+
+var lz = function (num) {
+  return num > 9 ? num : '0' + num;
+};
+
+// PhantomJS / old WebKit has a broken implementations
+module.exports = (fails(function () {
+  return $toISOString.call(new Date(-5e13 - 1)) != '0385-07-25T07:06:39.999Z';
+}) || !fails(function () {
+  $toISOString.call(new Date(NaN));
+})) ? function toISOString() {
+  if (!isFinite(getTime.call(this))) throw RangeError('Invalid time value');
+  var d = this;
+  var y = d.getUTCFullYear();
+  var m = d.getUTCMilliseconds();
+  var s = y < 0 ? '-' : y > 9999 ? '+' : '';
+  return s + ('00000' + Math.abs(y)).slice(s ? -6 : -4) +
+    '-' + lz(d.getUTCMonth() + 1) + '-' + lz(d.getUTCDate()) +
+    'T' + lz(d.getUTCHours()) + ':' + lz(d.getUTCMinutes()) +
+    ':' + lz(d.getUTCSeconds()) + '.' + (m > 99 ? m : '0' + lz(m)) + 'Z';
+} : $toISOString;