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Created by Eran Hammer, hapi.js is an open source framework built on top of Node.js for building web applications and services by Wallmart. In this tutorial, we will go through the advantages of hapi and build a simple application using hapi as the server.
Many programming languages support the concept of a default argument for a function parameter so that the caller does not always need to specify the argument value. Unfortunately, ES5 does not have a default argument support in its syntax. ES6 functions have come a long way by taking aboard the years of complaints and improving parameter handling that is less error-prone and more powerful.