# babel-plugin-transform-require-extensions

> A Babel plugin that transforms specified require path file extensions.

Latest version **2.0.1** (published 2020-04-06) · MIT license · 0 weekly downloads

## Install

```sh
npm install babel-plugin-transform-require-extensions
pnpm add babel-plugin-transform-require-extensions
yarn add babel-plugin-transform-require-extensions
bun add babel-plugin-transform-require-extensions
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 2.0.1 |
| Published | 2020-04-06 |
| First published | 2019-12-05 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Node | >=10 |
| Dependencies | 0 |
| Unpacked size | 4.9 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 3 |
| Author | Jayden Seric |
| Maintainers | jaydenseric |
| Keywords | babel, plugin, transform, require, extensions, mjs, esm |

## Links

- npm: https://www.npmjs.com/package/babel-plugin-transform-require-extensions
- Repository: https://github.com/jaydenseric/babel-plugin-transform-require-extensions
- Homepage: https://github.com/jaydenseric/babel-plugin-transform-require-extensions#readme
- Issues: https://github.com/jaydenseric/babel-plugin-transform-require-extensions/issues
- Funding: https://github.com/sponsors/jaydenseric
- npm.io page: https://npm.io/package/babel-plugin-transform-require-extensions

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## Recent versions

- 2.0.1 (latest) — 2020-04-06
- 2.0.0 — 2019-12-22
- 1.0.1 — 2019-12-05
- 1.0.0 — 2019-12-05

## README

# babel-plugin-transform-require-extensions

[![npm version](https://badgen.net/npm/v/babel-plugin-transform-require-extensions)](https://npm.im/babel-plugin-transform-require-extensions) [![CI status](https://github.com/jaydenseric/babel-plugin-transform-require-extensions/workflows/CI/badge.svg)](https://github.com/jaydenseric/babel-plugin-transform-require-extensions/actions)

A [Babel](https://babeljs.io) plugin that transforms specified `require` path file extensions.

This is useful for building dual ESM/CJS packages. [File names with extensions are mandatory](https://nodejs.org/api/esm.html#esm_mandatory_file_extensions) in ESM `import` specifiers in `.mjs` files. After transpiling this to CJS in `.js` files, the hardcoded `.mjs` extensions in the `require` paths must be transformed to `.js`. Alternatively, sometimes it’s safe to remove the extensions as Node.js in CJS mode can automatically resolve `.js` file extensions.

## Setup

To install from [npm](https://npmjs.com) run:

```sh
npm install babel-plugin-transform-require-extensions --save-dev
```

Configure Babel to use the plugin:

```json
{ "plugins": ["transform-require-extensions"] }
```

This plugin must run after any ESM to CJS transpilation occurs.

By default `.mjs` extensions are transformed to `.js`. The `extensions` option can be used to specify extension replacements. For example, to remove `.mjs` extensions:

```json
{
  "plugins": [
    [
      "transform-require-extensions",
      {
        "extensions": {
          ".mjs": ""
        }
      }
    ]
  ]
}
```

## Support

- Node.js v10+

---
_Source: https://npm.io/package/babel-plugin-transform-require-extensions · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._