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• I have looked for existingopen or closed documentation requests that match my proposal.
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Suggested Changes

Right now the@babel/* versions in ourpackage.json are out of date, behind e.g.@babel/code-frame@7.18.6:

I'm also seeing infixtures-to-test.ts that there are some ignored fixture files due to previously filed Babel issues that have since been resolved:

When I update the@babel/* packages to latest, remove thoseignores, and runtypescript-estree tests, there are snapshot failures intypescript/expressions/instantiation-expression.src.ts.https://github.com/typescript-eslint/typescript-eslint/actions/runs/3490803456/jobs/5842786077

             91 |     // Received = Babel, Expected = TSESTree           > 92 |     expect(babelAst).toEqual(tsestreeAst);

It'd be helpful to have the system of fixtures and snapshots documented. In particular I'd like to document what to do when these discrepencies show up in a package bump or AST fix.

#5885 is another example of where the docs would be helpful.

Edit: some context here too:#5717 (review),#5926 (comment)

Affected URL(s)

https://typescript-eslint.io/docs/maintenance/package-updates, maybe?