When debugging in Visual Studio Code, NODE_ENV will be equal to development. With the above code, I retrieve the APPSETTING_NODE_ENV or NODE_ENV environment setting. The last thing to add is a check to see on which environment your code is running. This makes it easier to call your function when debugging it. One of the other changes is to create a new function called AzureFunction and add all the logic of the default exported function to it. Of course, this approach requires more changes to make it all work. This way, you do not have to do any code changes before adding it to Azure. This object contains the same functions which can get called from within the original Azure Function context. The most important one is the debugContext object. Here is a code snippet of my mock objects: The approach I use is by creating mock objects that will only be used when my function runs in development. Of course, this does not make the development process pleasant. These code changes could be changing console.log to context.log and adding the context.done() function calls. It would require updating your local function code once it is ready to be placed on Azure. As these parameters are only available in the Azure Function context itself. The first thing you might think of is how you get these two parameters because running the function on your local machine would not do anything. When you want to start developing your function locally. Info: more information about JavaScript functions: Example: req for HTTP triggered functions, myTimer for timer triggered functions, myBlob for blob triggered functions. An object which depends on the type of function you created -> this is optional.In most cases, this exported function has two parameters: This is a requirement for JavaScript function to run. When you create an Azure function, you always have an export function. Check it out and let me know if this approach works for you. In this article, I will tell you my approach. Now to develop them locally, you will have to do a couple of things to make it an enjoyable experience. Info: You can do this via a continuous deployment (GIT, TFS, …) or a manual action. Once they are completed, I add the JavaScript code to the function on Azure. This not only gives me more control, but it also allows me to write them in TypeScript. So I always start my development on my local machine, so that I can easily debug and test them. I like that approach for doing quick and small code changes, but for larger ones, I want to be in control. It is good that you can develop it directly on Azure itself.

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