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• I havesearched for related issues and found none that match my proposal.
• I have searched thecurrent rule list and found no rules that match my proposal.
• I haveread the FAQ and my problem is not listed.

Relevant Package

utils

My proposal is suitable for this project

• I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).

Description

From#8211: we have references to whatFlatESLint andFlatRuleTester, which are the old terms for what ESLint now just callsESLint andRuleTester, respectively. We'll need to:

1. Make sure any export likeLegacyESLint as ESLint is exported asLegacy*
2. Make sure any export likeFlatESLint is renamed toFlatESLint as ESLint (or justESLint)

I suppose we could also remove theLegacy* classes too? Though ESLint v9 still does support the legacy configs if you opt into them...

Additional Info

This is not agood first issue. Someone who's already familiar with the classes & utilities in question should tackle this.

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