ESLint v9.13.0 released

Highlights

• The predefined array of config objects used by ESLint can be now accessed programmatically as ESLint.defaultConfig.
• To speed up loading, the ESLint CLI will automatically enable V8’s code cache in newer versions of Node.js.
• Custom languages can now provide their default options with the defaultLanguageOptions property. See the documentation about the Language object.

Features

• 381c32b feat: Allow languages to provide defaultLanguageOptions (#19003) (Milos Djermanovic)
• bf723bd feat: Improve eslintrc warning message (#19023) (Milos Djermanovic)
• 1def4cd feat: drop support for jiti v1.21 (#18996) (Francesco Trotta)
• f879be2 feat: export ESLint.defaultConfig (#18983) (Nitin Kumar)

Bug Fixes

• 78836d4 fix: update the complexity rule type (#19027) (Nitin Kumar)
• 064c8b6 fix: update rule types (#18925) (Nitin Kumar)

Documentation

• abdbfa8 docs: mark LintMessage#nodeType as deprecated (#19019) (Nitin Kumar)
• 19e68d3 docs: update deprecated rules type definitions (#19018) (Nitin Kumar)
• 7dd402d docs: Update examples of passing multiple values to a CLI option (#19006) (Milos Djermanovic)
• 5dcbc51 docs: Add example with side-effect imports to no-restricted-imports (#18997) (Milos Djermanovic)
• 1ee87ca docs: Update README (GitHub Actions Bot)
• 2c3dbdc docs: Use prerendered sponsors for README (#18988) (Milos Djermanovic)

Chores

• 68d2d9d chore: upgrade to @eslint/js@9.13.0 and @eslint/core@^0.7.0 (#19034) (Francesco Trotta)
• 2211f0a chore: package.json update for @eslint/js release (Jenkins)
• c7abaef perf: using Node.js compile cache (#19012) (唯然)
• 1d7c077 chore: add pkg.type “commonjs” (#19011) (唯然)
• 468e3bd test: fix ESLint tests (#19021) (Francesco Trotta)
• ed4635f ci: upgrade knip@5.32.0 (#18992) (Milos Djermanovic)
• efad767 chore: remove unused ignore dependency (#18993) (Amaresh S M)