- Added new ES2016, ES2018, ES2019, and ES2022 environments and updated eslint scope handling for ES3 'use strict' directives.
- Implemented FlatRuleTester and fixed arrow function return type handling in function parentheses.
- Updated documentation with examples, corrected links, and clarified usage guidelines.
v8.9.0
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Added handling for underflow without loss of precision and introduced checkConditionalExpressions to avoid unmodified loop conditions.
Fixed ASI hazard handling and false positives in various linting rules (e.g., no unused labels, getters, and unused vars).
Export ConfigObject from eslint/config to enable external usage.