[eslint] Support async formatters

[fasttime]

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[typescript-bot]

@fasttime Thank you for submitting this PR!

This is a live comment which I will keep updated.

1 package in this PR

• eslint — on npm, on unpkg
  • owner-approval: @bradzacher

Code Reviews

Because this is a widely-used package, a DT maintainer will need to review it before it can be merged.

You can test the changes of this PR in the Playground.

Status

• ✅ No merge conflicts
• ✅ Continuous integration tests have passed
• ✅ Most recent commit is approved by a DT maintainer

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---

Diagnostic Information: What the bot saw about this PR

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[typescript-bot]

🔔 @pmdartus @j-f1 @saadq @JasonHK @bradzacher @JounQin — please review this PR in the next few days. Be sure to explicitly select Approve or Request Changes in the GitHub UI so I know what's going on.

[peterblazejewicz]

LGTM!

[typescript-bot]

@fasttime: Everything looks good here. I am ready to merge this PR (at 2527c3a) on your behalf whenever you think it's ready.

If you'd like that to happen, please post a comment saying:

Ready to merge

and I'll merge this PR almost instantly. Thanks for helping out! ❤️

(@pmdartus, @j-f1, @saadq, @JasonHK, @bradzacher, @JounQin: you can do this too.)

[fasttime]

Ready to merge