6.2.0

Breaking Changes

• ESM-only package: Changed to pure ESM package
  • Added "type": "module" to package.json
  • Removed CJS build output - dist/index.js is now ESM only
  • Config file must use ESM format: eslint.config.ts or eslint.config.mjs
  • eslint.config.cjs and eslint.config.js (CommonJS) are no longer supported
  • This change was necessary because core dependencies like @stylistic/eslint-plugin are ESM-only

Added

• Stylistic Options Support: Added stylistic option to multiple configs
  • jsonc: Support stylistic option for indent control
  • yaml: Support stylistic option for indent and quotes control
  • toml: Support stylistic option for indent control
  • vue: Support stylistic option for indent control
• TypeScript Enhancements:
  • Added type: 'lib' option to enable ts/explicit-function-return-type for libraries
  • Added erasableOnly option to enable eslint-plugin-erasable-syntax-only
  • Added overridesTypeAware option to override type-aware rules
  • Updated to use projectService instead of project for better performance
• New Optional Dependency: Added eslint-plugin-erasable-syntax-only for erasable syntax checking

Changed

• Simplified build: Removed CJS build step, only ESM output now
  • Faster build times
  • Smaller package size
• Stylistic Defaults:
  • Changed arrowParens default from true (always) to false (avoid) - single param arrow functions don't need parentheses
  • Changed quoteProps default from 'consistent-as-needed' to 'as-needed' - compatible with Prettier
  • Added @stylistic/operator-linebreak with overrides: | and & at beginning of line, others at end
  • Added @stylistic/multiline-ternary with 'never' - keeps ternary expressions on same line
  • YAML uses double quotes by default (supports escape sequences, consistent with TOML/JSON/Prettier)
• TOML Config: Enhanced with more stylistic rules
  • Added toml/array-bracket-newline, toml/array-bracket-spacing, etc.
  • Changed toml/indent from 'tab' to 2
• YAML Config: Added yml/quotes rule for consistent quote style
• JSON Config: Added more stylistic rules when stylistic is enabled
• Vue Config: Added more stylistic rules when stylistic is enabled
• Rule Configuration Sync: Updated rules to align with modern best practices
  • Removed @stylistic/max-len rule (no line length limit by default)
  • Changed n/prefer-global/buffer to 'always' (use global Buffer)
  • Changed n/prefer-global/process to 'always' (use global process)
  • Added ts/no-unused-expressions with options for short-circuit, ternary, and tagged templates
  • Updated @stylistic/no-mixed-operators with specific operator groups configuration
  • Added ts/method-signature-style rule
  • Added ts/no-wrapper-object-types rule

Full Changelog: 6.1.0...6.2.0