https://github.com/maorleger/msal-2-esm-repro

https://github.com/maorleger/msal-2-esm-repro

Last synced: 27 days ago
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• Host: GitHub
• URL: https://github.com/maorleger/msal-2-esm-repro
• Owner: maorleger
• Created: 2024-01-24T16:16:34.000Z (12 months ago)
• Default Branch: main
• Last Pushed: 2024-01-25T22:35:29.000Z (12 months ago)
• Last Synced: 2024-12-09T18:01:23.895Z (about 1 month ago)
• Language: JavaScript
• Size: 1.95 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Repro of incompatibility between MSAL 2.x and the ESM NPM package

This is a minimal repro showing different behaviors when loading MSAL 2.x:

Context: MSAL 2.x moved to ESM with [conditional exports](https://nodejs.org/api/packages.html#conditional-exports) controlling whether to load ESM or CJS

The problem is that a very popular package [esm](https://www.npmjs.com/package/esm) (2.6 million downloads per week) does not support conditional exports. As a result, using `esm` prevents the ability to load the correct type of MSAL module.

To run this:

```bash

npm install

npm run start:module # runs main.mjs using native esm, prints "ok" and MSAL's version

npm run start:commonjs # runs main.cjs using common js, prints "ok" and MSAL's version

npm run start:esm # runs main.mjs using the esm package, throws Error: Cannot find module '@azure/msal-node'

```