type: module breaking webpack compilation

[bazineta]

Post 3.4.1, the top-level package.json has been changed to have type: module.

Our host environment is ESM as well, and as such we import jquery-migrate. Unfortunately, with the type defined as module, the CommonJS/AMD wrapper is falling through to browser globals when compiled, and we don't have browser globals for anything, jquery included, and thus we're failing at runtime.

Removing type: module from the 3.5.0 package.json does resolve the issue.

Using webpack 5.93.0, jquery 3.7.1, jquery-migrate 3.5.0. Backing off to 3.4.1 resolves the issue, as that release did not have type:module present.

[mgol]

Thanks for the report. This regressed in #512 (cc @timmywil, we need to take this into account in projects that don't have separate *-dist repos). I wonder if we can just add a simple package.json in dist as we have in jQuery:

{
  "type": "commonjs"
}

That should resolve your issue; I wonder if there are other breaking consequences of this change, though.

[mgol]

BTW, we'd catch this if we had any Node-based or bundler tests. The Node ones are the easiest but Migrate doesn't really support Node.js.

[mgol]

PR: #525

[bazineta]

Your fixes come faster than my testing 😉. Adding the described package.json in dist does indeed resolve the situation in our case.

[mgol]

Thanks for confirming!

[mgol]

Fixed in jQuery Migrate 3.5.2.