Error: Can't resolve './defineProperty'

I have upgraded from v4.0.5 to v4.1.1. When compiling with Webpack 5, it fails with this error:

ERROR in ./node_modules/redux/node_modules/@babel/runtime/helpers/esm/objectSpread2.js 1:0-46
Module not found: Error: Can't resolve './defineProperty' in '/home/alex/Projects/soapbox-fe/node_modules/redux/node_modules/@babel/runtime/helpers/esm'
Did you mean 'defineProperty.js'?
BREAKING CHANGE: The request './defineProperty' failed to resolve only because it was resolved as fully specified
(probably because the origin is strict EcmaScript Module, e. g. a module with javascript mimetype, a '*.mjs' file, or a '*.js' file where the package.json contains '"type": "module"').
The extension in the request is mandatory for it to be fully specified.
Add the extension to the request.
resolve './defineProperty' in '/home/alex/Projects/soapbox-fe/node_modules/redux/node_modules/@babel/runtime/helpers/esm'
  using description file: /home/alex/Projects/soapbox-fe/node_modules/redux/node_modules/@babel/runtime/helpers/esm/package.json (relative path: .)
    Field 'browser' doesn't contain a valid alias configuration
    using description file: /home/alex/Projects/soapbox-fe/node_modules/redux/node_modules/@babel/runtime/helpers/esm/package.json (relative path: ./defineProperty)
      Field 'browser' doesn't contain a valid alias configuration
      /home/alex/Projects/soapbox-fe/node_modules/redux/node_modules/@babel/runtime/helpers/esm/defineProperty doesn't exist

webpack compiled with 1 error

It seems to be related to this issue: https://github.com/webpack/webpack/issues/11467

Adding the following into my Webpack rules fixes the problem:

  {
    test: /\.m?js/,
    resolve: {
      fullySpecified: false,
    },
  },

[alexgleason]

I’m not the first to have this problem and I won’t be the last. I’m just the first to report it.

Your incredibly rude and dismissive response makes me wonder why I waste my time. I’ve already worked around the problem, but the reality is that this is a bug in your software. Just thought you might like to know!

I get it. Open source is hard. People are ungrateful. I know that better than anyone. But come back to Earth for 5 seconds and reread this please.

[alexgleason]

It was the lock file. Apparently yarn add redux@latest isn’t good enough. yarn upgrade redux (and upgrading a bunch of other deps that way) finally fixed it. Thanks for your help.