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Suggested Changes

There are few of debugging options commonly used with ESLint:

• eslint --debug: enabling all of ESLint's debug logs
• parserOptions.debugLevel: a shortcut to set eslint, typescript, and/or typescript-eslint
• Directly setting the DEBUG environment variable for debug

Splitting out of #8030 (comment): it'd be good to document using these appropriately for performance investigations.

Affected URL(s)

https://typescript-eslint.io/linting/troubleshooting/performance-troubleshooting, perhaps?