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feat: add 'unopinionated' config #2715

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JoshuaKGoldberg
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@JoshuaKGoldberg JoshuaKGoldberg commented Aug 7, 2025 •
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Fixes #896.

Adds all rules from recommended to a new unopinionated config, with the exception of rules that add in subjective opinions >1% of users might not want (per my vague guesstimation). This list was generated by looking through #896 & linked issues, then running on my personal repos:

Rule Reason Mentioned
catch-error-name Subjective naming preference #896
consistent-function-scoping Subjective preference; doesn't impact control flow
empty-brace-spaces Formatters also handle this #2634
explicit-length-check Subjective preference; increases character count
filename-case Subjective naming preference #896
no-array-callback-reference Subjective preference; not always cleaner code
no-array-reduce Subjective code structure preference #896
no-await-expression-member Subjective preference; not always cleaner code
no-for-loop Subjective preference; not always optimal
no-nested-ternary Very opinionated; some projects need this #896
no-null Subjective preference some libraries don't work with #896
prefer-export-from Subjective preference; not always less code
prefer-query-selector Subjective preference not relevant to all projects #896
prefer-spread Subjective preference; doesn't impact control flow
prevent-abbreviations Subjective naming preference #896
switch-case-braces Subjective preference; not always cleaner code
template-indent Conflicts with Vitest-style .toMatchInlineSnapshot()

This unopinionated config does include the following rules that were mentioned as being candidates for removal:

Rule Reason Mentioned
no-useless-undefined Legitimate improvement; consistent-return doesn't enforce correctness #2715

I recognize I'm not an expert on this plugin and look forward to learning why some rules should(n't) be on those lists. ☺️

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fisker commented Aug 7, 2025

I don't think "Type safety makes this much less useful" is a good reason to make rule 'opinionated'.

If I understand it correctly. It should only include rules for correctness, there should be only a few rules.

@JoshuaKGoldberg JoshuaKGoldberg force-pushed the config-unopinionated branch 2 times, most recently from 45b069b to b31c759 Compare August 7, 2025 15:47
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fisker commented Aug 7, 2025 •
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Rules like consistent-assert, consistent-empty-array-spread are 'opinionated'.

Strictly speaking, part of no-useless-undefined are 'unopinionated', these examples are very "stupid" as JS code https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/docs/rules/no-useless-undefined.md#fail

@JoshuaKGoldberg JoshuaKGoldberg marked this pull request as ready for review August 7, 2025 17:43
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Ok I think I adjusted for that?

@sindresorhus sindresorhus requested a review from fisker August 11, 2025 09:43
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@sindresorhus sindresorhus sindresorhus approved these changes

@fisker fisker Awaiting requested review from fisker

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Add unopinionated preset
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@JoshuaKGoldberg @fisker @sindresorhus