tslib does not provide an export named 'default'

I would have opened this as a bug report but unfortunately I have been so far unable to construct a reproduction outside of the context of my project. I am opening this issue to see if anything has either encountered the same problem or would have an idea on how to narrow down the source to provide a reproduction.

I am getting the following error in the browser console:

Uncaught SyntaxError: The requested module '/node_modules/tslib/tslib.js?v=41e18f12' does not provide an export named 'default'

I have been using Vite 2 on this project from the start and have had no issues, then today, after restarting the server, I got this (completely breaking the application).

Any help would be much appreciated!

Additional information:

• Vite version: 2.0.0-beta.30
• tslib version: 1.14.1
• Content of /node_modules/tslib/tslib.js: https://gist.github.com/hmaurer/e101d1f7263c2e5dd0219850f53bdd03#file-tslib-js
• Output of npm ls tslib: https://gist.github.com/hmaurer/e101d1f7263c2e5dd0219850f53bdd03#file-gistfile1-txt

[yyx990803]

This is a bug in tslib. Its exports field points to an ESM file which in turn imports a UMD file…

Workaround:

// vite.config.js
module.exports = {
  alias: {
    tslib: 'tslib/tslib.es6.js'
  }
}

[github-actions[bot]]

This issue has been locked since it has been closed for more than 14 days.

If you have found a concrete bug or regression related to it, please open a new bug report with a reproduction against the latest Vite version. If you have any other comments you should join the chat at Vite Land or create a new discussion.