Configring node js.

node_modules/core-js/modules/_array-fill.js

@@ -0,0 +1,15 @@
+// 22.1.3.6 Array.prototype.fill(value, start = 0, end = this.length)
+'use strict';
+var toObject = require('./_to-object')
+  , toIndex  = require('./_to-index')
+  , toLength = require('./_to-length');
+module.exports = function fill(value /*, start = 0, end = @length */){
+  var O      = toObject(this)
+    , length = toLength(O.length)
+    , aLen   = arguments.length
+    , index  = toIndex(aLen > 1 ? arguments[1] : undefined, length)
+    , end    = aLen > 2 ? arguments[2] : undefined
+    , endPos = end === undefined ? length : toIndex(end, length);
+  while(endPos > index)O[index++] = value;
+  return O;
+};