Root directory in package.json

Question

My question concerns an existing library that I wish to publish as an NPM module. The library is already in use, and currently required via the local file syste

Answer 1

Another possibility is to use ECMAScript modules (ES modules), particularly the package exports field in your package.json file.

Given a package.json file with this config:

{
  "name": "my",
  "exports": {
    "./": "./src/js/lib/my/"
  }
}

You should be able to import modules from the library like:

import thing from 'my/thing'
import that from 'my/that'

This is enabled by default since node 13.0.0, but was behind the --experimental-exports flag from 12.13.0.

Note, that the ES Module spec is in the Stability:1 - Experimental stage and subject to change. I have no idea the extent to which this might be compatible with CommonJS modules.