Changes to src/1-getting-started/3_callbacks/node-addon-api/addon.js. All files

src/1-getting-started/3_callbacks/node-addon-api/addon.js

@@ -1,4 +1,4 @@-var addon = require('bindings')('addon');+const addon = require('bindings')('addon');  addon(function(msg){   console.log(msg); // 'hello world'