Externality

Externality is a set of utilities for handling identifying whether a given package or path should be considered an external package that can be imported at runtime, or whether is should be bundled in a build step.

It also contains a webpack and rollup plugin for encapsulating this functionality.

Install

Install using npm or yarn:

1npm i externality
2# or
3yarn add externality

Rollup plugin

1import { rollupExternals } from 'externality'

Webpack plugin

1import { webpackExternals } from 'externality'

Utils

resolveId

This utility is powered by enhanced-resolve and will resolve a given module/path with support for extensions, CJS/ESM and more.

1import { resolveId } from 'externality'
2
3await resolveId('my-lib', { type: 'commonjs' })
4// {
5//   id: 'my-lib',
6//   path: '/path/to/node_modules/my-lib/index.js',
7//   type: 'commonjs'
8// }

isExternal

1import { isExternal } from 'externality'
2
3await isExternal('my-lib', '.')
4// {
5//   id: 'my-lib',
6//   external: true
7// }

License

MIT