https://github.com/garronej/js2mjs
Transform a codebase that uses .js into a codebase that uses .mjs
https://github.com/garronej/js2mjs
Last synced: about 2 months ago
JSON representation
Transform a codebase that uses .js into a codebase that uses .mjs
- Host: GitHub
- URL: https://github.com/garronej/js2mjs
- Owner: garronej
- License: mit
- Created: 2023-01-29T19:39:01.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-10-02T06:34:15.000Z (8 months ago)
- Last Synced: 2025-04-14T20:15:32.325Z (about 2 months ago)
- Language: TypeScript
- Size: 125 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# js2mjs
> WARNING: This modules messes up the sourcemaps. I didn't find a way to fix them.
Convert a ESM distribution that is using .js extension to an ESM distribution using .mjs extension.
## Motivation
Node.js is ESM compatible but it's a bit picky about the files extension. It expects import statements to include the file extension
and that `.mjs` be used instead of `.js`.
So when you setup TypeScript to output an ESM distribution it will generate a distribution that isn't compatible with Node in `"type": "module"` mode.
It's an ESM distribution that Vite, Next.js and other build tools will understand but not Node.
This module let you patch the distribution so it can be used with node.
```bash
yarn add --dev js2mjs
npx tsc # Build your project we assume it generate dist/esm
npx js2mjs dist/esm # Your ESM distribution using .js extension will be updated to an ESM distribution using .mjs extension
```