How to inform Windows that the service has started? - node.js

Question

I am running a nodejs HTTP server packaged as an exe binary with the pkg npm module. I need to run it as a windows service. It works perfectly when started normally. But here is what happens if I run it as a windows service:
I start the service.
Windows attempts to start the service.
During this time, the HTTP server is accessible, and works perfectly
Windows services times out with the error after 30 seconds: "The service did not respond to the start or control request in a timely fashion."
It seems to me that I somehow have to inform windows that my service has started, let me just stay open.
How can I do that?

Answer 1

A regular application can't work as Windows service. As the reference states, the implementation should satisfy certain requirements,
the interface requirements of the service control manager (SCM) that a service program must include:
Service Entry Point
Service ServiceMain Function
Service Control Handler Function
There is os-service package that allows to install a service that starts Node.js script. Current script is considered entry point by default:
const osService = require('os-service');
const [action] = process.argv.slice(2);
function errorHandler(err) {
if (!err) return;
console.error(err);
process.exit(1);
}
if (action === '--install') {
osService.add('Foo', errorHandler);
} else if (action === '--uninstall') {
osService.remove('Foo', errorHandler);
} else {
// report service as running
osService.run('Foo', () => {
osService.stop();
});
// app entry point
}