Is the main key in package.json mandatory?

Question

I have a repo which contains a collection of a few Node.js serverless, Function-as-a-Service functions. The functions share the same node_modules directory, but deployed separately to our FaaS platform.

npm init creates a "main": "function.js" entry in package.json. Since I don't have a single (or any) entry point, I wonder if I can remove this line altogether.

Is the main key in package.json mandatory?

Answer 1

No, it's not mandatory.

You can publish a package on npm (using the npm publish command) even without specifying a main entry point. So you're free to remove it from your package.json.

According to the docs, the only required fields are "name" and "version".