- Added ECMA 2026 support with `using`/`await using`, ES2025 globals, auto‑accessor fields for class methods, and new rule options (global type declarations, ignore type annotations, `allowProperties`, `sourceCode.isGlobalReference`).
- Fixed rule and config bugs: negated pattern matching, LintOptions.filterCodeBlock types, FlatConfig type deprecation handling, and language/dialect handling for `no-use-before-define`; also improved location lookup performance.
- Enhanced documentation (custom name for includeIgnoreFile, README and prompt usage updates) and upgraded @eslint/js to version 9.29.0.
v9.29.0
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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.