Add node.js modules for use with Azure Functions

Question

I believe I'm running into the same issue as described in this earlier posting, but after following the "official" instructions from this Microsoft document, I'm still getting the following error when my Node.js code attempts to run as an Azure Functions trigger:

2018-02-20T20:53:43.527 [Error] Exception while executing function: Functions.NewMP3FileTrigger. mscorlib: One or more errors occurred. Error: Cannot find module 'azure-storage'
    at Function.Module._resolveFilename (module.js:469:15) 

This is the very first line in my code, which I believe is what's failing:

var azure = require('azure-storage');

As far as I can tell, adding the package seemed to work via these steps: - get the contents of the package.json file from here (which looks legit). - Using the Azure diagnostic console, placed the package.json file in the wwwroot folder. - ran npm install in the console window.

It ran for some time, and when it was done, there was a very sizeable node_modules now in that same folder. I did note that it generate a number of warnings like the following example, but not sure if these matter:

npm WARN deprecated [email protected]: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue

Actually surprised that I need to add any modules for Microsoft services to any Azure environment as I would have thought they would be provided by default, but there you go.

Answer 1

You shouldn't copy package.json from the azure-storage-node repository. Instead, your package.json should simply reference azure-storage as dependency, e.g.

{
  "name": "test",
  "version": "1.0.0",
  "dependencies": {
    "azure-storage": "^2.8.0"
  }
}

After npm install make sure that node_modules folder contains azure-storage.

P.S. Be sure to have a look at Storage bindings for Azure Functions, maybe you don't have to use SDK directly (depends on the use case).