ESM build

[edemaine]

Replace old dist/es/index.js with dist/index.mjs that uses ESM syntax, and properly link to it via module and exports.

Fixes #63

I also updated Webpack because otherwise I couldn't get it to run on modern Node.

What kind of change does this PR introduce?

• [ ] Bug Fix
• [ ] Feature
• [ ] Refactoring
• [ ] Style
• [x] Build
• [ ] Chore
• [ ] Documentation
• [ ] CI

Did you add tests for your changes?

• [ ] Yes, my code is well tested
• [x] Not relevant

If relevant, did you update the documentation?

• [x] Yes, I've updated the documentation
• [ ] Not relevant

Summary See #63. This lets you import accept from 'attr-accept' in ESM code.

Does this PR introduce a breaking change? If anyone directly imported dist/es/index.js, it no longer exists. (It seems to be a holdover that made a "fake" ES module.)

Other information You can test the example in the README by making a file test.mjs and then running node test.mjs. (The .mjs extension forces ESM mode.)

[rolandjitsu]

Superseded by https://github.com/react-dropzone/attr-accept/pull/66?

[edemaine]

I updated the deps in package-lock.json, as suggested in https://github.com/react-dropzone/attr-accept/pull/66#issuecomment-2403171182

This let me actually try npm testing, and there were some additional issues that needed resolving (now fixed):

• Added type: "module" to package.json so that tests are treated as ESM. All files were already ESM anyway, except:
• Rename webpack.config.js to webpack.config.cjs so it can remain in CJS.
• Updated Mocha to enable ESM support.

If you want this PR and would rather it use a modern/faster build framework such as esbuild instead of Webpack, let me know.

[jonkoops]

This one can be closed now that #75 was merged.