extract-npm-package-config

This package can extract npm package config variables from process.env for in-app usage.

Npm per-package configuration setting is an underrated feature.

https://docs.npmjs.com/misc/config#per-package-config-settings

package.json

...
  "config": {
    "scheme": "http",
    "domain": "localhost",
    "port": "3001"
  },
...

1. As long as you use npm run ... scripts this config will be available in the process.env variables.
2. Each of these variables can be referenced inside the package.json for usage with other scripts.
3. Can easily be overridden via env variables server-side.

Install

npm install --save-dev extract-npm-package-config

Usage

Standalone

const packageConfig = extractPackageConfig(process.env);

npm_package_config_domain: 'localhost' npm_package_config_port: 3000

Webpack

It can easily be used in conjunction with webpack EnvironmentPlugin client-side.

webpack.config.js

...
plugins: [
    new webpack.EnvironmentPlugin(extractPackageConfig(process.env))
]
...

Note 1: You should'nt make use of it server side, because weback.DefinePlugin replace the variables in the source code itself, thus this would defeat the purpose of having env variables that can be easily overridden.

Note 2: There is currently a limitation due to the way weback.DefinePlugin replace process.env occurrences in the code. You can't destructure process.env see https://github.com/webpack/webpack/issues/5392

Licence

MIT