• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have read the FAQ and my problem is not listed.

Repro

{
  "rules": {
    "@typescript-eslint/prefer-optional-chain": ["error"]
  }
}

// your repro code case

Expected Result

This rule used to work without type information before v5.16.0

Actual Result

Upgrading to v5.16.0, it now requires type information.

Error: Error while loading rule '@typescript-eslint/prefer-optional-chain': You have used a rule which requires parserServices to be generated. You must therefore provide a value for the "parserOptions.project" property for @typescript-eslint/parser.

Additional Info

This is a breaking change and should be included in a major version bump.

Also, the documentation table on the rules do not mention this rule requires type information: https://github.com/typescript-eslint/typescript-eslint/tree/main/packages/eslint-plugin

Regression introduced in #4430

Versions