Support flat config for eslint-config-airbnb-base

[tamiroh]

This pull request supports flat config for eslint-config-airbnb-base.

An example of usage is as follows.

// eslint.config.mjs

import airbnbBase from "eslint-config-airbnb-base/flat";

export default [
  ...airbnbBase,
  // Add your own configs
];

[mcorbelli]

Is this pull request fully functional? only approval is missing?

[ljharb]

@mcorbelli no, it’s not functional until eslint-find-rules is updated.

[KonRatt]

@ljharb FYI: eslint-find-rules does have flat-config support now: https://github.com/sarbbottam/eslint-find-rules/releases/tag/v4.2.0

[ljharb]

Thanks, I’m aware since I’m the one who published it :-)

[fazzabi]

The goal of this PR is to ensure compatibility between eslint-config-airbnb-base and ESLint 9, correct? It looks like you'll need to update line 83 to include ESLint 9 as a peer dependency.

[tamiroh]

Thank you for pointing this out. And sorry for the delay 🥲.
Fixed in 1009adc.

[cdbattags]

Any update on when we're planning to get this in?

[tamiroh]

@ljharb
Hello! 👋
Is there anything else I can do to help get this pull request merged?

[chrstrock]

@tamiroh, Looks like there's some rebasing issues.

[torachitj]

@ljharb Can we prioritize this ? And get this merged. Thanks.

[chrstrock]

I added a PR that is this rebased from master: #3123

[ljharb]

Please don't do that.

I can rebase this PR any time I like; rebasing isn't what's delaying this PR, my availability is.

[whydea]

@ljharb I've been following and I know about your commitments, tasks and responsibilities with the community, but do you have any idea when support for version 9 will be available? I'm just asking because we really need support for version 9. There are many libs that depend on Airbnb.

[Aluisio]

Hi @ljharb, I hope you're doing well. Can we still hope that when you have some time, you'll help with compatibility with v9?