Configring node js.

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

@@ -0,0 +1,28 @@
+var aFunction = require('./_a-function')
+  , toObject  = require('./_to-object')
+  , IObject   = require('./_iobject')
+  , toLength  = require('./_to-length');
+
+module.exports = function(that, callbackfn, aLen, memo, isRight){
+  aFunction(callbackfn);
+  var O      = toObject(that)
+    , self   = IObject(O)
+    , length = toLength(O.length)
+    , index  = isRight ? length - 1 : 0
+    , i      = isRight ? -1 : 1;
+  if(aLen < 2)for(;;){
+    if(index in self){
+      memo = self[index];
+      index += i;
+      break;
+    }
+    index += i;
+    if(isRight ? index < 0 : length <= index){
+      throw TypeError('Reduce of empty array with no initial value');
+    }
+  }
+  for(;isRight ? index >= 0 : length > index; index += i)if(index in self){
+    memo = callbackfn(memo, self[index], index, O);
+  }
+  return memo;
+};