babel-plugin-eliminator

babel-plugin-eliminator

What is this?

This is a babel plugin for removing specific named exports in your JavaScript code, this is how Next.js implements getServerSideProps and getStaticProps, it essentially removes thoses exports and referenced variables.

Install

npm i babel-plugin-eliminator

Usage

Removing specific named exports

Options:

{
  "plugins": [
    ["eliminator", {"namedExports": ["foo"]}]
  ]
}

Input:

import pkg from 'some-pkg'

const someVariable = 'some-string'

export const foo = () => {
    return pkg(someVariable)
}

Output:

export var foo = 1

Options

type PluginState = {
  refs: Set<NodePath<BabelTypes.Identifier>>
  opts: PluginOpts
  /** Removed named exports */
  removedNamedExports: Set<string>
}

type PluginOpts = {
  /** Removing specific named exports */
  namedExports?: string[]
  /** Called at the end of transpiling */
  done?: (state: PluginState) => void
}

Credits

This plugin is essentially a fork of next.js/next-ssg-transform.

License

MIT © EGOIST