Whether you use 2 spaces or 4 spaces, there are a few simple things that can make your code easier to read. We've been using them in all the hapi modules for over 4 years now.
JavaScript makes is harder than most languages to know where variables are coming from. Variables assigned required modules are particularly important because they represent a singleton object shared with the entire application. There are also globals and module globals, along with function variables and arguments.
Traditionally, variables starting with an uppercase letter represent a class that must be instantiated using new. This was an important semantic in the early days of JavaScript but at this point, if you don't know Date requires new Date() you are probably very new. We have adopted CamelCase variable names for all module global variables which are assigned required modules:
var Hapi = require('hapi');Note that you cannot new Hapi(), only new Hapi.Server(). In this style, the exported object from the modules always exposes an object which contains the API. This means a single function module should still export an object with the single method as an object property:
exports.add = function (a, b) {
return a + b;
};This makes it trivial to identify which variables in your code represent required modules. The language itself does contain a few uppercase variables but those are well known and should not cause any confusion.