Fix.

node_modules/resolve/index.js

@@ -0,0 +1,8 @@
+var core = require('./lib/core');
+var async = require('./lib/async');
+async.core = core;
+async.isCore = function isCore(x) { return core[x]; };
+async.sync = require('./lib/sync');
+
+exports = async;
+module.exports = async;