Testing NPM local-paths

https://docs.npmjs.com/cli/v7/configuring-npm/package-json#local-paths

How NPM local-paths works

When adding local path as dependency using npm install file:./localdep it creates symbolic link to local directory.

  npm install
  ls -alh node_modules

... localdep -> ../localdep

Changes to local package are reflected in node_modules 🎉.