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npm · #319 most downloaded on npm
Runtime-agnostic core of ESLint
Last release 6 months ago
08 Apr 2026
Ships fairly regularly
a new release about every 5 weeks
Nearly every release is documented
notes for 26 of 26 stable releases
Nothing withdrawn
no release was ever pulled
2 years old
26 releases · first in 2024
revert re-export ESM types in CommonJS
One column per month.
type-check suggestion messageId against MessageIds
Add custom rule type helpers to @eslint/plugin-kit
Remove deprecated RuleContext methods
require fix in suggestion objects
Add config types in @eslint/core
relax type for rule.meta.docs.recommended
Allow RuleConfig to have array with just severity
### Features * Add extendable config types
add core types for language-specific rule definitions
Set type for RuleDefinition.defaultOptions
Add meta.language and meta.dialects to RuleDefinition
### Bug Fixes * Update RuleVisitor type
Add Language#normalizeLanguageOptions()
### Features * Add rule types
0.7.0 (2026-07-21) Features alias Config to ConfigObject
Add Directive and DirectiveType
### Features * Add plugin-kit package
### Features * add CommonJS core types
Add getLoc/getRange to SourceCode interface
### Features * Add more type definitions
### Features * Add eslint/core package
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