Node.js Module not found - node.js

Question

I am experience a Module Not Found error for an NPM package that is installed and appears to be present in the node_modules folder. Is something missing in the underlying package itself?
Here is my package.json:
{
"name": "cmtest",
"version": "0.0.0",
"description": "cmtest",
"main": "server.js",
"author": {
"name": "Andrew"
},
"dependencies": {
"cloudmersive": "^1.3.2"
}
}
And then I am calling a require:
'use strict';
var http = require('http');
var Cloudmersive = require('cloudmersive');
var port = process.env.PORT || 1337;
http.createServer(function (req, res) {
res.writeHead(200, { 'Content-Type': 'text/plain' });
res.end('Hello World\n');
var api = new Cloudmersive.BarcodeLookupApi()
var value = "value_example"; // {String} Barcode value
var callback = function (error, data, response) {
if (error) {
console.error(error);
} else {
console.log('API called successfully. Returned data: ' + data);
}
};
api.barcodeLookupEanLookup(value, callback);
}).listen(port);
But I am getting this error:
"Cannot find module 'cloudmersive'"
"Error: Cannot find module 'cloudmersive'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:571:15)
at Function.Module._load (internal/modules/cjs/loader.js:497:25)
at Module.require (internal/modules/cjs/loader.js:626:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object.<anonymous> (c:\users\andrew\documents\visual studio 2017\Projects\cmtest\cmtest\server.js:3:20)
at Module._compile (internal/modules/cjs/loader.js:675:14)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:689:10)
at Module.load (internal/modules/cjs/loader.js:589:32)
at tryModuleLoad (internal/modules/cjs/loader.js:528:12)
at Function.Module._load (internal/modules/cjs/loader.js:520:3)"
Any ideas? Is there something wrong with the package itself? Is it a development/configuration issue on my part?
The package cloudmersive is installed with NPM and shows up in the node_modules folder. I also tried using nvm to switch between several different versions.
Underlying package source is here: https://github.com/Cloudmersive/Cloudmersive.APIClient.Javascript
Is there something wrong with the index.js file?

Answer 1

package.json for cloudmersive says main is src/client.invoker/index.js but the file is not in that directory.

Answer 2

To use the library locally without publishing to a remote npm registry, first install the dependencies by changing
into the directory containing package.json. Let’s call this JAVASCRIPT_CLIENT_DIR. Then run:
npm install
Next, link it globally in npm with the following, also from JAVASCRIPT_CLIENT_DIR:
npm link
Finally, switch to the directory you want to use your cloudmersive from, and run:
npm link /path/to/<JAVASCRIPT_CLIENT_DIR>
You should now be able to require('cloudmersive') in javascript files from the directory you ran the last
command above from.
You can checkout the README.md file inside the cloudmersive module which you have installed inside your node_modules directory to get more detailed instructions on this.