# ESLint

Find and fix problems in your JavaScript code.

Repository: https://github.com/eslint/eslint
Canonical: https://ross.abutalabs.com/products/eslint
Homepage: https://eslint.org
Language: JavaScript
License: MIT
License Family: permissive
Topics: eslint, javascript, ecmascript, static-code-analysis, linter
Last push: 2026-08-25T17:24:42+00:00
Link (homepage): https://eslint.org
Link (site_page): https://eslint.org/docs/latest/use/migrate-to-10.0.0
Link (site_page): https://eslint.org/docs/latest
Link (site_page): https://eslint.org/docs/latest/use/getting-started
Link (site_page): https://eslint.org/docs/latest/use/command-line-interface

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 100
- inputs: {"age_days": 4813, "days_push": 8, "days_rel": 9, "gap_med": 13.0, "n_releases_24m": 57}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 27484, forks 5172 (observed 2026-08-28T04:11:47.747242+00:00)

## What it is
ESLint is a pluggable linter that statically analyzes JavaScript and JSX code to find problems and enforce consistent coding patterns. Every rule is a plugin, and it can be extended with custom rules, parsers, and configurations, running from the CLI, in editors, or in CI pipelines.

## Use cases
- lint javascript code for bugs and style issues
- automatically fix lint errors in js files
- enforce a consistent code style across a team
- add custom linting rules for a project
- run static analysis in a CI pipeline
- lint jsx and modern ecmascript syntax
- set up eslint configuration for a new project

## When to choose
- you write JavaScript or JSX and want to catch bugs and enforce style rules
- you need a highly configurable, plugin-based linting setup
- you want editor integration and CI linting for JS projects
- you need custom rules tailored to your codebase

## When to avoid
- you need linting for TypeScript only without JavaScript (consider typescript-eslint on top of ESLint)
- you only want code formatting rather than linting (a formatter like Prettier may suffice)
- your project is not JavaScript/ECMAScript based

## Facets
- artifact type: cli-tool
- maturity: stable
- function: linter, static-site-generator, parser, developer-tools, cli
- domain: developer-tools, web-development
- platform: cli, cross-platform
- tags: javascript, ecmascript, static-code-analysis, code-linting, pluggable-rules, code-style, ast, jsx, editor-integration, ci-cd, code-quality, nodejs

## Member repositories
- eslint/eslint (main) score 99
- eslint/js (backend) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:47.747242+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:54:32.012184+00:00, confidence not recorded.
  - readme: https://github.com/eslint/eslint (fetched 2026-08-28T04:11:47.747242+00:00, sha cda47c19a3ab)
  - homepage: https://eslint.org (fetched 2026-08-29T07:52:22.369066+00:00, sha 6c5cced43bd7)
  - site_page: https://eslint.org/docs/latest/use/migrate-to-10.0.0 (fetched 2026-08-29T07:52:22.371803+00:00, sha 59c567010a42)
  - site_page: https://eslint.org/docs/latest (fetched 2026-08-29T07:52:22.374266+00:00, sha bbb3fb177c17)
  - site_page: https://eslint.org/docs/latest/use/getting-started (fetched 2026-08-29T07:52:22.376017+00:00, sha 317579f546ec)
  - site_page: https://eslint.org/docs/latest/use/command-line-interface (fetched 2026-08-29T07:52:22.378037+00:00, sha b20ceb504e8b)
  - site_page: https://eslint.org/docs/latest/use/configure (fetched 2026-08-29T07:52:22.380874+00:00, sha 890562c4b0f0)
- Data as of 2026-08-30T08:39:29.467469+00:00.